Dr. Mark A Vaughan , MD
General Practice • Auburn, CA
3256 Professional Dr
Auburn, CA 956022412
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 August 22, 2005; this date does not establish years in practice.
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Published CMS data list 4,799 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:
- 99213 — Established patient outpatient office visit: 636 service units.
- 99214 — Established patient outpatient office visit: 594 service units.
- 99457 — Management using the results of remote vital sign monitoring per calendar month: 469 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 30 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 2,685 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:
- Atorvastatin Calcium — 308 prescription fills, including refills.
- Losartan Potassium — 284 prescription fills, including refills.
- Amlodipine Besylate — 238 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 57 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 85% of clinicians listed under General Practice in California (2024, 409 clinicians with data). Median for this group: 485. Middle half: 154 to 2,019.
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 2,428 in 2020 to 4,799 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
3256 Professional Dr
Auburn, CA 956022412
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: Auburn 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
Saint Louis University School Of Medicine
1996
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
727 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 $401,309 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 $330,085 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
7,138 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
$215,267 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $16.75 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
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?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Vaughan 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. Vaughan 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 Auburn and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 85% of clinicians listed under General Practice in California (2024, 409 clinicians with data). Median for this group: 485. Middle half: 154 to 2,019.
Too few clinicians listed under General Practice in Auburn have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 85% of clinicians listed under General Practice in California (2024, 409 clinicians with data). Median for this group: $45,658. Middle half: $15,010 to $165,277.
Too few clinicians listed under General Practice in Auburn have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 85% of clinicians listed under General Practice in California (2024, 409 clinicians with data). Median for this group: $32,130. Middle half: $11,436 to $131,972.
Too few clinicians listed under General Practice in Auburn have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under General Practice in California (2024, 610 clinicians with data). Median for this group: 758. Middle half: 125 to 3,707.
Too few clinicians listed under General Practice in Auburn have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 70% of clinicians listed under General Practice in California (2024, 610 clinicians with data). Median for this group: $48,894. Middle half: $2,044 to $279,308.
Too few clinicians listed under General Practice in Auburn have Medicare Part D data for 2024 to compare.
3 active clinicians are listed under General Practice with a practice address in Auburn, CA (1,963 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.
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Medicare Part B services
Medicare Part B services increased 98% from 2,428 in 2020 to 4,799 in 2024.
- 2020: 2,428
- 2021: 2,612
- 2022: 3,332
- 2023: 4,843
- 2024: 4,799
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Medicare-allowed amount
Medicare-allowed amount increased 171% from $148,262 in 2020 to $401,309 in 2024.
- 2020: $148,262
- 2021: $172,715
- 2022: $254,104
- 2023: $405,984
- 2024: $401,309
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Paid by Medicare
Paid by Medicare increased 189% from $114,105 in 2020 to $330,085 in 2024.
- 2020: $114,105
- 2021: $132,811
- 2022: $206,472
- 2023: $322,494
- 2024: $330,085
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 27% from 3,700 in 2020 to 2,685 in 2024.
- 2020: 3,700
- 2021: 3,078
- 2022: 3,620
- 2023: 3,193
- 2024: 2,685
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30-day fills
30-day fills decreased 21% from 8,983 in 2020 to 7,138 in 2024.
- 2020: 8,983
- 2021: 7,850
- 2022: 9,081
- 2023: 8,382
- 2024: 7,138
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Part D drug cost
Part D drug cost decreased 18% from $261,722 in 2020 to $215,267 in 2024.
- 2020: $261,722
- 2021: $228,433
- 2022: $299,633
- 2023: $280,472
- 2024: $215,267
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $249.00 in 2020 to $16.75 in 2025.
- 2020: $249.00
- 2023: $18.87
- 2025: $16.75
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): fewer than 11 records totaling $16.75.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
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JOURNAVX | General | $16.75 |
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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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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636 | 407 | $150.00 | $95.05 |
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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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594 | 359 | $175.00 | $134.51 |
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99457
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes
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469 | 76 | $60.00 | $52.38 |
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99490
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
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469 | 84 | $75.00 | $65.64 |
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99454
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days
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435 | 75 | $75.10 | $53.42 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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431 | 280 | $24.94 | $16.84 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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418 | 418 | $187.00 | $136.94 |
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99497
Advance care planning, first 30 minutes
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332 | 328 | $100.00 | $84.65 |
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G0008
Administration of influenza virus vaccine
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136 | 133 | $35.00 | $34.15 |
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90653
Influenza vaccine, inactivated
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127 | 127 | $89.06 | $81.20 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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72 | 69 | $48.00 | $15.17 |
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90480
Admn sarscov2 vacc 1 dose
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66 | 66 | $51.67 | $45.54 |
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91320
Sarscv2 vac 30mcg trs-suc im
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66 | 66 | $160.00 | $152.78 |
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87637
Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus
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65 | 62 | $157.23 | $137.85 |
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90677
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
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60 | 60 | $312.33 | $285.87 |
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G0009
Administration of pneumococcal vaccine
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60 | 60 | $37.47 | $33.27 |
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99496
Transitional care management services for problem of high complexity
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49 | 43 | $346.33 | $288.70 |
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17003
Destruction of precancer skin growth, 2-14 growths
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47 | 14 | $18.00 | $7.39 |
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81002
Urinalysis, manual test
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44 | 39 | $12.00 | $3.41 |
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99439
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
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34 | 24 | $51.47 | $45.77 |
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17000
Destruction of precancer skin growth, 1 growth
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30 | 27 | $110.00 | $72.13 |
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87651
Detection test by nucleic acid for strep (streptococcus, group a), amplified probe technique
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28 | 28 | $96.43 | $34.39 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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26 | 25 | $215.00 | $189.93 |
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69210
Removal of impacted ear wax
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18 | 17 | $110.00 | $50.39 |
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99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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18 | 18 | $40.00 | $25.55 |
(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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 308 | 26,431 | $3,474.92 | 94 |
| Losartan Potassium | Losartan Potassium | 284 | 25,017 | $3,912.67 | 85 |
| Amlodipine Besylate | Amlodipine Besylate | 238 | 20,749 | $1,865.49 | 67 |
| Levothyroxine Sodium | Levothyroxine Sodium | 161 | 14,431 | $2,158.49 | 47 |
| Lisinopril | Lisinopril | 134 | 11,831 | $1,344.06 | 41 |
| Gabapentin | Gabapentin | 99 | 7,680 | $2,853.22 | 32 |
| Metoprolol Succinate | Metoprolol Succinate | 96 | 7,360 | $1,188.46 | 26 |
| Eliquis | Apixaban | 80 | 4,325 | $81,674.23 | 19 |
| Omeprazole | Omeprazole | 79 | 6,820 | $1,414.04 | 27 |
| Escitalopram Oxalate | Escitalopram Oxalate | 78 | 6,008 | $1,236.54 | 23 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 59 | 5,240 | $1,060.77 | 17 |
| Hydrochlorothiazide | Hydrochlorothiazide | 54 | 4,776 | $141.54 | 18 |
| Fluticasone Propionate | Fluticasone Propionate | 53 | 3,460 | $1,459.36 | 22 |
| Tamsulosin Hcl | Tamsulosin Hcl | 46 | 4,160 | $773.17 | 19 |
| Simvastatin | Simvastatin | 42 | 3,752 | $614.00 | 13 |
| Metformin Hcl | Metformin Hcl | 42 | 3,655 | $590.80 | 15 |
| Carvedilol | Carvedilol | 41 | 2,794 | $386.90 | — |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 41 | 901 | $878.65 | 18 |
| Trazodone Hcl | Trazodone Hcl | 40 | 3,568 | $369.48 | — |
| Furosemide | Furosemide | 38 | 2,496 | $171.40 | 11 |
| Atenolol | Atenolol | 37 | 3,370 | $323.97 | 13 |
| Pantoprazole Sodium | Pantoprazole Sodium | 36 | 3,126 | $587.25 | — |
| Clopidogrel | Clopidogrel Bisulfate | 31 | 2,820 | $754.91 | 11 |
| Finasteride | Finasteride | 31 | 2,790 | $966.89 | — |
| Synthroid | Levothyroxine Sodium | 31 | 2,070 | $2,659.89 | — |
(top 25 shown)
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: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL PRACTICE
I20050316000570
CA
1355396920
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
Auburn Medical Group, Inc
3256 Professional Dr, Auburn, CA 956022412
Auburn Medical Group, Inc
3280 Professional Dr, Auburn, CA 956022412
Phone: 5308868630
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Physician Assistant - Medical
Nurse Practitioner - Family
Family Nurse Practitioner
Family Medicine
Physician Assistant (Certified), Master of Public Health
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated August 22, 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
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Mailing Address
3256 Professional Dr
Auburn, CA 956022412
Phone: 5308868630