Dr. Christopher Tomassian , MD
Dermatology • Glendora, CA
552 W Foothill Blvd Ste 202
Glendora, CA 917412470
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. Christopher Tomassian is listed in NPPES under Dermatology.
-
NPI assigned on March 19, 2018; this date does not establish years in practice.
-
Published CMS data list 1,597 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.
-
Published Part B service records, 2024:
- 17003 — Destruction of precancer skin growth, 2-14 growths: 616 service units.
- 99213 — Established patient outpatient office visit: 239 service units.
- 17000 — Destruction of precancer skin growth, 1 growth: 167 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 11 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 1,114 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.
-
Published Part D records, 2024:
- Ketoconazole — 263 prescription fills, including refills.
- Triamcinolone Acetonide — 215 prescription fills, including refills.
- Clobetasol Propionate — 78 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 21 records in the table · Guide: How to read Medicare Part D prescriber data
-
Fewer Medicare Part B services than 60% of clinicians listed under Dermatology in California (2024, 1,173 clinicians with data). Median for this group: 2,242. Middle half: 930 to 4,815.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 32 in 2022 to 1,597 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022–2024.
Practice Location & Contact Primary Location
552 W Foothill Blvd Ste 202
Glendora, CA 917412470
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: Dermatology Collective Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
University Of Missouri, Kansas City, School Of Medicine
2018
What Public CMS Data Show
Dermatology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
291 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 $109,102 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 $78,219 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
1,229 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
$352,369 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: $42,171.02 across 92 records.
By nature of payment (3 largest of 4)
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program: $40,000.00 across 1 record.
- Food and Beverage: $1,870.03 across 89 records.
- Travel and Lodging: $201.00 across 1 record.
Reporting-company totals (3 largest of 12)
- Galderma Laboratories, L.P.: $40,502.07 across 28 records.
- Sanofi and Genzyme US Companies: $327.58 across 9 records.
- Regeneron Pharmaceuticals, Inc.: $274.74 across 8 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
8 years (graduated 2018)
CMS Doctors and Clinicians data list 2018 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, CMS release of October 2, 2026.
NPI first issued
2018
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Tomassian 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. Tomassian 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 Glendora and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 60% of clinicians listed under Dermatology in California (2024, 1,173 clinicians with data). Median for this group: 2,242. Middle half: 930 to 4,815.
Too few clinicians listed under Dermatology in Glendora have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 60% of clinicians listed under Dermatology in California (2024, 1,173 clinicians with data). Median for this group: $174,353. Middle half: $66,544 to $372,919.
Too few clinicians listed under Dermatology in Glendora have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 60% of clinicians listed under Dermatology in California (2024, 1,173 clinicians with data). Median for this group: $125,258. Middle half: $46,902 to $276,443.
Too few clinicians listed under Dermatology in Glendora have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Dermatology in California (2024, 1,488 clinicians with data). Median for this group: 461. Middle half: 181 to 901.
Too few clinicians listed under Dermatology in Glendora have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 80% of clinicians listed under Dermatology in California (2024, 1,488 clinicians with data). Median for this group: $65,207. Middle half: $5,984 to $248,204.
Too few clinicians listed under Dermatology in Glendora have Medicare Part D data for 2024 to compare.
5 active clinicians are listed under Dermatology with a practice address in Glendora, CA (2,106 in California).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services increased 4891% from 32 in 2022 to 1,597 in 2024.
- 2022: 32
- 2023: 1,154
- 2024: 1,597
-
Medicare-allowed amount
Medicare-allowed amount increased 2229% from $4,684 in 2022 to $109,102 in 2024.
- 2022: $4,684
- 2023: $86,841
- 2024: $109,102
-
Paid by Medicare
Paid by Medicare increased 2053% from $3,633 in 2022 to $78,219 in 2024.
- 2022: $3,633
- 2023: $63,087
- 2024: $78,219
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 2552% from 42 in 2019 to 1,114 in 2024.
- 2019: 42
- 2021: 17
- 2022: 28
- 2023: 337
- 2024: 1,114
-
30-day fills
30-day fills increased 1123% from 101 in 2019 to 1,229 in 2024.
- 2019: 101
- 2021: 17
- 2022: 28
- 2023: 356
- 2024: 1,229
-
Part D drug cost
Part D drug cost went from $930 in 2019 to $352,369 in 2024.
- 2019: $930
- 2021: $569
- 2022: $522
- 2023: $16,182
- 2024: $352,369
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $343.83 in 2021 to $42,171.02 in 2025.
- 2021: $343.83
- 2022: $16,575.23
- 2023: $104,447.58
- 2024: $44,418.60
- 2025: $42,171.02
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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): 92 records totaling $42,171.02.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Galderma Laboratories, L.P. |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
|
— | General | $40,000.00 |
| Galderma Laboratories, L.P. |
Travel and Lodging
In-kind items and services
|
— | General | $201.00 |
| REVANCE THERAPEUTICS, INC. |
Food and Beverage
In-kind items and services
|
DAXXIFY | General | $144.25 |
| Janssen Pharmaceuticals, Inc |
Education
In-kind items and services
|
TREMFYA | General | $99.99 |
| REVANCE THERAPEUTICS, INC. |
Food and Beverage
In-kind items and services
|
DAXXIFY | General | $97.35 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $49.58 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $48.80 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $48.38 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $46.56 |
| UCB, Inc. |
Food and Beverage
In-kind items and services
|
Bimzelx | General | $44.77 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $43.07 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $39.97 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $39.97 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $39.38 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $36.95 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $36.62 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $32.91 |
| UCB, Inc. |
Food and Beverage
In-kind items and services
|
Bimzelx | General | $31.44 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
OTEZLA | General | $29.61 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
|
OPZELURA | General | $29.44 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
|
OPZELURA | General | $29.10 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
SKYRIZI | General | $28.85 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $28.73 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
|
OPZELURA | General | $28.25 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $27.08 |
(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 2021–2023 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, 2022–2024; 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 |
|---|---|---|---|---|
|
17003
Destruction of precancer skin growth, 2-14 growths
|
616 | 97 | $11.60 | $7.61 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
239 | 153 | $149.92 | $98.61 |
|
17000
Destruction of precancer skin growth, 1 growth
|
167 | 119 | $115.16 | $54.80 |
|
17110
Destruction of skin growth, 1-14 growths
|
149 | 114 | $196.94 | $128.48 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
116 | 116 | $210.16 | $120.38 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
99 | 66 | $210.85 | $137.86 |
|
11102
Biopsy of related skin growth, first growth
|
97 | 85 | $172.55 | $100.55 |
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
38 | 38 | $272.57 | $177.95 |
|
99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
|
32 | 27 | $128.08 | $61.85 |
|
11103
Biopsy of related skin growth, each additional growth
|
30 | 18 | $85.99 | $56.41 |
|
12032
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
|
14 | 13 | $515.47 | $339.47 |
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 |
|---|---|---|---|---|---|
| Ketoconazole | Ketoconazole | 263 | 7,864 | $4,026.01 | 112 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 215 | 7,070 | $2,470.90 | 148 |
| Clobetasol Propionate | Clobetasol Propionate | 78 | 2,114 | $2,111.33 | 58 |
| Hydrocortisone | Hydrocortisone | 74 | 1,978 | $462.15 | 54 |
| Dupixent Pen | Dupilumab | 59 | 1,652 | $224,216.86 | — |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 54 | 1,103 | $718.62 | 40 |
| Betamethasone Dipropionate | Betamethasone Dipropionate | 48 | 1,289 | $2,046.98 | 28 |
| Clindamycin Phosphate | Clindamycin Phosphate | 45 | 1,380 | $1,534.61 | 23 |
| Metronidazole | Metronidazole | 35 | 1,075 | $1,285.06 | 20 |
| Tacrolimus | Tacrolimus | 34 | 1,130 | $3,684.72 | 23 |
| Fluorouracil | Fluorouracil | 28 | 876 | $2,232.91 | 24 |
| Mupirocin | Mupirocin | 26 | 553 | $131.53 | 20 |
| Gabapentin | Gabapentin | 22 | 1,020 | $85.05 | — |
| Minoxidil | Minoxidil | 22 | 1,660 | $178.79 | 12 |
| Terbinafine Hcl | Terbinafine Hcl | 22 | 720 | $156.09 | 12 |
| Doxycycline Hyclate | Doxycycline Hyclate | 19 | 621 | $2,543.70 | 12 |
| Tretinoin | Tretinoin | 19 | 630 | $1,169.02 | — |
| Valacyclovir | Valacyclovir Hcl | 14 | 133 | $194.56 | 11 |
| Opzelura | Ruxolitinib Phosphate | 14 | 420 | $26,828.19 | — |
| Humira Pen | Adalimumab | 12 | 356 | $76,021.53 | — |
| Nystatin | Nystatin | 11 | 330 | $270.82 | — |
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
Self-certified to NPPES: 2022-08-24NUCC Taxonomy Code: 207N00000X
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
NUCC Taxonomy Code: 207NS0135X
Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers).
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - DERMATOLOGY
I20220926000357
CA
8921333626
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, CMS release of October 2, 2026
Dermatology Collective Inc
552 W Foothill Blvd, Glendora, CA 917412470
Phone: 8187958252
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 552 W FOOTHILL BLVD STE 202, GLENDORA, CA 917412470 (Tel: 8187958252)
Registered at 552 W FOOTHILL BLVD STE 202, GLENDORA, CA 917412470 (Tel: 8187958252)
Dermatology (license number reported to NPPES: CA 177939)
NPI status registered as active in NPPES database
Registered at 4733 W SUNSET BLVD FL 3, LOS ANGELES, CA 900276021 (Tel: 3237834516)
Registered at 4733 W SUNSET BLVD FL 3, LOS ANGELES, CA 900276021
Recorded as CHRISTOPHER TOMASSIAN, MD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dermatology Specialists in Glendora
Healthcare providers in GlendoraMailing Address
552 W Foothill Blvd Ste 202
Glendora, CA 917412470
Phone: 6262402020