NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1275558967 MD
Verify on CMS → Gary Coomber, MD
Family Medicine Physician in Santa Rosa, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,125 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
5K
Medicare Part D claims · 401 beneficiaries · Family Medicine Physician avg: 4K
Generic prescribing
88%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.8/100
▲ 0 pts above national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Gary Coomber, MD reported a CMS MIPS final score of 83.8/100 - above the 83.5 national average - and filed 4,849 Medicare Part D claims in 2024.
- 83.8/100
- MIPS score · +0 vs avg
- 5K
- Part D claims, 2024
- 88%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Gary Coomber, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1275558967), first enumerated 07/13/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,849 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 83.8/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Gary Coomber, MD's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1275558967 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-INLINE · RX-MID · BOOK-MID · PHOTO-FINISH
- NPI-10 1275558967
- ENUM-LEGACY 2006
- TAX-MEGA 150K Family Medicine
- MIPS-INLINE 83.8/100
- RX-MID 4,849
- BOOK-MID 16,272 in California
- PHOTO-FINISH Sarah Abla, DO · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Coomber · this p…
Coomber · this provider
83.8 MIPS pts
- Nooshin Bagheri,…
Nooshin Bagheri, MD
83.8 MIPS pts
- Sarah Abla, DO ·…
Sarah Abla, DO
83.8 MIPS pts
- Abhishek Ahuja, …
Abhishek Ahuja, M.D.
83.8 MIPS pts
- Gretchen Andrews…
Gretchen Andrews, MD
83.8 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Gary Coomber, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
84 ≥ 39th percentile 39% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Gary Coomber, MD sits
This provider among family medicine physician peers
Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gary Coomber, MD writes more Part D claims than 66% of them and scores higher on MIPS quality than 40% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Gary Coomber, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Gary Coomber, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Gary Coomber, MD?
Near national averagePrimary specialty
Family Medicine Physician
Medicare Part D claims
4,849 38% vs specialty avg
MIPS final score
83.8/100 0.3 pts vs avg
Specialty distribution in California
How Family Medicine Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Gary Coomber, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average
- MIPS Final Score
- 83.8/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1275558967 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/13/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
83.8451
Final Score
Measured-score avg: 83.5
84.5974
Quality
58.6394
Cost
100
Promoting Interoperability
Reporting: Group practice
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Gary Coomber, MD. To verify Gary Coomber, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Gary Coomber, MD - brand share 11.0%
Family Medicine Physician average
11% brand-name claims vs 88% generic, on 4,849 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
4,849
Total Claims
$325K
Total Drug Cost
401
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,368.533
- Total Day Supply
- 301,021
- Brand vs Generic
- 11% brand / 88% generic
- Brand Drug Cost
- $240K
- Generic Drug Cost
- $81K
- Opioid Claims
- 341 (7.0% rate)
- Antibiotic Claims
- 80
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.23
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 62, 65-74: 157, 75-84: 139, 85+: 43
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Gary Coomber, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levothyroxine Sodium
Levothyroxine Sodium
215 claims
- Gabapentin
Gabapentin
171 claims
- Lisinopril
Lisinopril
167 claims
- Atorvastatin Calcium
Atorvastatin Calcium
162 claims
- Losartan Potassium
Losartan Potassium
155 claims
- Amlodipine Besylate
Amlodipine Besylate
117 claims
- Simvastatin
Simvastatin
114 claims
- Hydrochlorothiazide
Hydrochlorothiazide
111 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 215 |
| Gabapentin | 171 |
| Lisinopril | 167 |
| Atorvastatin Calcium | 162 |
| Losartan Potassium | 155 |
| Amlodipine Besylate | 117 |
| Simvastatin | 114 |
| Hydrochlorothiazide | 111 |
| Metformin Hcl Er Metformin Hcl | 106 |
| Oxycodone Hcl | 103 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Gary Coomber, MD fits within the Family Medicine Physician landscape nationally.
150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider
Gary Coomber, MD's 4,849 claims are above the specialty average of 3,519.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Coomber, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (83.8 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Coomber.
One of 16,272 Family Medicine Physician providers enrolled in California, 5 are shown here.
Dr. Omer Aba-Omer
MD
Santa Monica, CA
Dr. Michelle Ababa
MD
Wilmington, CA
Dr. Anna Tzeitel Abalos
MD
Roseville, CA
Dr. Adan Abarca
MD
Anaheim, CA
Dr. Vanessa Abarca
DO
Ventura, CA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gary Coomber, MD's specialty? ▼
Gary Coomber, MD specializes in Family Medicine Physician and practices in Santa Rosa, California. Credentials: MD.
How much does Gary Coomber, MD prescribe under Medicare Part D? ▼
In 2024, Gary Coomber, MD wrote 4,849 Medicare Part D claims totaling $325K in drug costs for 401 beneficiaries.
What is Gary Coomber, MD's Medicare quality score? ▼
Gary Coomber, MD has a CMS MIPS Final Score of 83.8/100 (Quality: 84.6, Cost: 58.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gary Coomber, MD located? ▼
Gary Coomber, MD is located at 144 STONY POINT RD, Santa Rosa, CA, 95401. Phone: (707) 521-4500.
What is Gary Coomber, MD's NPI number? ▼
Gary Coomber, MD's National Provider Identifier (NPI) is 1275558967, issued on 07/13/2006.
Does Gary Coomber, MD prescribe more brand-name or generic drugs? ▼
Gary Coomber, MD's prescribing is 11% brand-name and 88% generic drugs by claim count, with $240K in brand drug costs.
Does Gary Coomber, MD prescribe opioids? ▼
Yes, Gary Coomber, MD had 341 opioid claims in 2024 with an opioid prescribing rate of 7.0%.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Gary Coomber, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Gary Coomber, MD's most frequently prescribed drugs include Levothyroxine Sodium, Gabapentin, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gary Coomber, MD accept Medicare? ▼
Gary Coomber, MD appears in CMS Medicare data with 4,849 Part D claims and 401 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Coomber, MD's credentials? ▼
Gary Coomber, MD's NPI is 1275558967 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.