NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1407964000 M.D.
Verify on CMS → Phyllis Cohen, M.D.
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 147,760 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
875
Medicare Part D claims · 338 beneficiaries · Family Medicine Physician avg: 3K
What the federal data shows
Phyllis Cohen, M.D. filed 875 Medicare Part D claims in 2023 as a Family Medicine Physician in Santa Rosa, California.
- 875
- Part D claims, 2023
- ≥73rd
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1407964000 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1407964000
- ENUM-LEGACY 2006
- TAX-MEGA 148K Family Medicine
- RX-LIGHT 875
- BOOK-MID 15,933 in California
- PHOTO-ENUM David Billmeier · 2006
Phyllis Cohen, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
875 ≥ 73rd percentile 73% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Phyllis Cohen, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Phyllis Cohen, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
875 74% vs specialty avg
Specialty distribution in California
How Family Medicine Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
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 | 1407964000 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 08/25/2006 |
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 Phyllis Cohen, M.D.. To verify Phyllis Cohen, M.D.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
875
Total Claims
$214K
Total Drug Cost
338
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,451
- Total Day Supply
- 40,529
- Generic Drug Cost
- $17K
- Opioid Claims
- 103 (11.8% rate)
- Antibiotic Claims
- 16
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.06
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 42, 65-74: 173, 75-84: 103, 85+: 20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Phyllis Cohen, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
58 claims
- Levothyroxine Sodium
Levothyroxine Sodium
44 claims
- Atorvastatin Calcium
Atorvastatin Calcium
42 claims
- Losartan Potassium
Losartan Potassium
33 claims
- Zolpidem Tartrate
Zolpidem Tartrate
32 claims
- Lorazepam
Lorazepam
31 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
28 claims
- Alprazolam
Alprazolam
27 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 58 |
| Levothyroxine Sodium | 44 |
| Atorvastatin Calcium | 42 |
| Losartan Potassium | 33 |
| Zolpidem Tartrate | 32 |
| Lorazepam | 31 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 28 |
| Alprazolam | 27 |
| Pregabalin | 22 |
| Gabapentin | 20 |
* 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 Phyllis Cohen, M.D. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Phyllis Cohen, M.D.'s 875 claims are below the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Cohen, both outside California so the neighborhoods are not geographic containment.
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 Cohen.
One of 15,933 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. Lorraine Abate
M.D.
Sacramento, CA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Phyllis Cohen, M.D.'s specialty? ▼
Phyllis Cohen, M.D. specializes in Family Medicine Physician and practices in Santa Rosa, California. Credentials: M.D..
How much does Phyllis Cohen, M.D. prescribe under Medicare Part D? ▼
In 2023, Phyllis Cohen, M.D. wrote 875 Medicare Part D claims totaling $214K in drug costs for 338 beneficiaries.
Where is Phyllis Cohen, M.D. located? ▼
Phyllis Cohen, M.D. is located at 131 STONY CIR STE 1600, Santa Rosa, CA, 95401. Phone: (707) 541-7700.
What is Phyllis Cohen, M.D.'s NPI number? ▼
Phyllis Cohen, M.D.'s National Provider Identifier (NPI) is 1407964000, issued on 08/25/2006.
Does Phyllis Cohen, M.D. prescribe opioids? ▼
Yes, Phyllis Cohen, M.D. had 103 opioid claims in 2023 with an opioid prescribing rate of 11.8%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Phyllis Cohen, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Phyllis Cohen, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Levothyroxine Sodium, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Phyllis Cohen, M.D. accept Medicare? ▼
Phyllis Cohen, M.D. appears in CMS Medicare data with 875 Part D claims and 338 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Phyllis Cohen, M.D.'s credentials? ▼
Phyllis Cohen, M.D.'s NPI is 1407964000 with credentials M.D.. 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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 April 2026 (NPPES) / 2023 (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 May 2026.