Dr. Mark A Vierra , MD
Specialist • Poway, CA
15525 Pomerado Rd, Suite A-2
Poway, CA 920642435
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on July 11, 2005; this date does not establish years in practice.
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Published CMS data list 15,133 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J7345 — Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg: 6,001 service units.
- 17003 — Destruction of precancer skin growth, 2-14 growths: 4,043 service units.
- 99213 — Established patient outpatient office visit: 1,149 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 28 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 650 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Doxycycline Hyclate — 128 prescription fills, including refills.
- Triamcinolone Acetonide — 70 prescription fills, including refills.
- Ketoconazole — 58 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 19 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Specialist in California (2024, 982 clinicians with data). Median for this group: 1,451. Middle half: 402 to 4,254.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 14,388 in 2020 to 15,133 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
15525 Pomerado Rd
Suite A-2
Poway, CA 920642435
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Bernardo Dermatology Medical Group Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Pennsylvania State University College Of Medicine
1996
What Public CMS Data Show
Specialist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
1,186 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $606,255 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $431,311 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
717 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$80,808 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $560.94 across 35 records.
By nature of payment
- Food and Beverage: $470.95 across 34 records.
- Education: $89.99 across 1 record.
Reporting-company totals (3 largest of 8)
- Janssen Pharmaceuticals, Inc: $322.11 across 21 records.
- Sanofi and Genzyme US Companies: $82.53 across 4 records.
- Incyte Corporation: $43.39 across 3 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Vierra has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Vierra as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Poway and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Specialist in California (2024, 982 clinicians with data). Median for this group: 1,451. Middle half: 402 to 4,254.
Too few clinicians listed under Specialist in Poway have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 85% of clinicians listed under Specialist in California (2024, 982 clinicians with data). Median for this group: $122,564. Middle half: $40,064 to $306,851.
Too few clinicians listed under Specialist in Poway have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 85% of clinicians listed under Specialist in California (2024, 982 clinicians with data). Median for this group: $92,950. Middle half: $29,370 to $232,247.
Too few clinicians listed under Specialist in Poway have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Specialist in California (2024, 1,058 clinicians with data). Median for this group: 502. Middle half: 100 to 1,727.
Too few clinicians listed under Specialist in Poway have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Specialist in California (2024, 1,058 clinicians with data). Median for this group: $37,012. Middle half: $2,282 to $302,438.
Too few clinicians listed under Specialist in Poway have Medicare Part D data for 2024 to compare.
17 active clinicians are listed under Specialist with a practice address in Poway, CA (5,756 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Poway
11.8% of these 17 clinicians have the CMS telehealth indicator.
35.3% of these 17 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services stayed about the same: 14,388 in 2020 and 15,133 in 2024.
- 2020: 14,388
- 2021: 12,854
- 2022: 12,478
- 2023: 12,796
- 2024: 15,133
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Medicare-allowed amount
Medicare-allowed amount increased 47% from $412,036 in 2020 to $606,255 in 2024.
- 2020: $412,036
- 2021: $510,170
- 2022: $546,622
- 2023: $591,383
- 2024: $606,255
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Paid by Medicare
Paid by Medicare increased 48% from $290,616 in 2020 to $431,311 in 2024.
- 2020: $290,616
- 2021: $367,940
- 2022: $393,488
- 2023: $425,744
- 2024: $431,311
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 200% from 217 in 2020 to 650 in 2024.
- 2020: 217
- 2021: 381
- 2022: 501
- 2023: 572
- 2024: 650
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30-day fills
30-day fills increased 216% from 227 in 2020 to 717 in 2024.
- 2020: 227
- 2021: 414
- 2022: 550
- 2023: 646
- 2024: 717
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Part D drug cost
Part D drug cost increased 555% from $12,341 in 2020 to $80,808 in 2024.
- 2020: $12,341
- 2021: $94,359
- 2022: $92,910
- 2023: $165,783
- 2024: $80,808
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $334.15 in 2021 to $560.94 in 2025.
- 2021: $334.15
- 2022: $471.78
- 2023: $430.85
- 2024: $425.31
- 2025: $560.94
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 35 records totaling $560.94.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $120.25 |
| Janssen Pharmaceuticals, Inc |
Education
In-kind items and services
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TREMFYA | General | $89.99 |
| Hill Dermaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
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Tolak | General | $30.02 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $27.40 |
| Journey Medical Corporation |
Food and Beverage
In-kind items and services
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— | General | $23.36 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $19.21 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $18.68 |
| UCB, Inc. |
Food and Beverage
In-kind items and services
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Bimzelx | General | $18.38 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
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Sotyktu | General | $17.91 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $17.24 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
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OPZELURA | General | $14.87 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
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OPZELURA | General | $14.83 |
| UCB, Inc. |
Food and Beverage
In-kind items and services
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Bimzelx | General | $14.77 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
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OPZELURA | General | $13.69 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $13.33 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $9.82 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $9.54 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $9.51 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $8.63 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $8.10 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $7.52 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $6.83 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $4.81 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $4.79 |
| Organon LLC |
Food and Beverage
In-kind items and services
|
VTAMA | General | $4.53 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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J7345
Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg
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6,001 | 26 | $2.58 | $1.67 |
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17003
Destruction of precancer skin growth, 2-14 growths
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4,043 | 572 | $15.00 | $7.78 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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1,149 | 739 | $120.05 | $99.78 |
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17000
Destruction of precancer skin growth, 1 growth
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1,089 | 702 | $105.00 | $57.18 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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717 | 460 | $160.06 | $140.29 |
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11102
Biopsy of related skin growth, first growth
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532 | 392 | $135.00 | $102.98 |
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17110
Destruction of skin growth, 1-14 growths
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523 | 388 | $140.00 | $127.73 |
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11103
Biopsy of related skin growth, each additional growth
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156 | 113 | $70.42 | $57.54 |
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17004
Destruction of precancer skin growth, 15 or more growths
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144 | 99 | $240.00 | $191.19 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
|
102 | 94 | $80.00 | $62.98 |
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12032
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
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94 | 80 | $405.00 | $343.89 |
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17262
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm
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80 | 62 | $225.00 | $183.65 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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72 | 72 | $140.00 | $121.77 |
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69100
Biopsy of ear
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61 | 54 | $160.00 | $83.65 |
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11602
Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm
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59 | 54 | $315.00 | $140.89 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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40 | 40 | $200.00 | $181.67 |
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11603
Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm
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33 | 30 | $360.00 | $160.95 |
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10060
Simple or single drainage of skin abscess
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31 | 31 | $150.00 | $143.71 |
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96574
Application of light with debridement to destroy precancer skin growth
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30 | 25 | $350.00 | $326.44 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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28 | 19 | $2.39 | $0.96 |
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11900
Injection into skin growth, 1-7 growths
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24 | 19 | $65.00 | $54.21 |
|
17111
Destruction of skin growth, 15 or more growths
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24 | 21 | $200.00 | $152.81 |
|
13132
Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm
|
23 | 20 | $755.00 | $527.10 |
|
96372
Injection of drug or substance under skin or into muscle
|
19 | 14 | $28.32 | $16.02 |
|
11104
Punch biopsy, first skin growth
|
17 | 17 | $180.00 | $144.25 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Doxycycline Hyclate | Doxycycline Hyclate | 128 | 4,283 | $2,858.14 | 57 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 70 | 2,095 | $430.74 | 48 |
| Ketoconazole | Ketoconazole | 58 | 1,647 | $940.34 | 39 |
| Valacyclovir | Valacyclovir Hcl | 58 | 528 | $659.32 | 30 |
| Hydrocortisone | Hydrocortisone | 50 | 1,389 | $254.00 | 35 |
| Clobetasol Propionate | Clobetasol Propionate | 49 | 1,479 | $2,723.34 | 38 |
| Fluticasone Propionate | Fluticasone Propionate | 27 | 779 | $478.50 | 22 |
| Ciclopirox | Ciclopirox Olamine | 26 | 754 | $330.24 | 13 |
| Betamethasone Dipropionate | Betamethasone Dipropionate | 24 | 698 | $1,059.45 | 20 |
| Clindamycin Phosphate | Clindamycin Phosphate | 22 | 780 | $740.71 | — |
| Cephalexin | Cephalexin | 18 | 168 | $64.39 | 18 |
| Fluocinonide | Fluocinonide | 18 | 494 | $713.89 | 15 |
| Metronidazole | Metronidazole | 17 | 559 | $1,217.43 | — |
| Mupirocin | Mupirocin | 17 | 385 | $78.39 | 12 |
| Dupixent Syringe | Dupilumab | 16 | 504 | $67,008.58 | — |
| Sumatriptan Succinate | Sumatriptan Succinate | 14 | 214 | $106.49 | — |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 14 | 292 | $113.37 | — |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 13 | 46 | $26.24 | 13 |
| Halobetasol Propionate | Halobetasol Propionate | 11 | 400 | $1,004.37 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 174400000X
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - DERMATOLOGY
I20120213000089
CA
2860685930
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Bernardo Dermatology Medical Group Inc
15525 Pomerado Rd, Poway, CA 920642425
Phone: 8584513311
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Specialist
Doctor of Medicine (M.D.)
Nurse Practitioner
Nurse Practitioner
Specialist
Doctor of Medicine (M.D.)
Specialist
Doctor of Medicine (M.D.)
Specialist
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 11, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Specialists in Poway
- Dr. Francis Barber, MD
- Dr. Sheldon Zablow, MD
- Dr. Ruth Larson, MD
- Dr. Marcelo Rivera, MD
- Dr. Ashley Rubin, MD
- Dr. Elizabeth Vierra, MD
Mailing Address
13186 Sundance Ave
San Diego, CA 921292458
Phone: 8584513311