NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1154409969 MD
Verify on CMS → Karin Wammack, MD
Family Medicine Physician in Fresno, 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
343
Medicare Part D claims · 40 beneficiaries · Family Medicine Physician avg: 3K
What the federal data shows
Karin Wammack, MD filed 343 Medicare Part D claims in 2023 as a Family Medicine Physician in Fresno, California.
- 343
- Part D claims, 2023
- ≥57th
- 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.
Karin Wammack, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
343 ≥ 57th percentile 57% 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)
Karin Wammack, MD 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 Karin Wammack, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
343 90% 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).
Karin Wammack, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 1551 E SHAW AVE STE 139, Fresno, CA, 93710, with a listed phone of (559) 320-0490. NPI 1154409969 was issued on 11/01/2006.
Medicare Part D records for calendar year 2023 show 343 prescription claims written by this provider, covering 40 Medicare beneficiaries and totaling roughly $47K in drug spend.
Family Medicine Physician is a high-volume specialty nationwide, with 147,760 enrolled providers across 56 states and an average of 3,418 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1154409969 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 11/01/2006 |
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 Karin Wammack, MD. To verify Karin Wammack, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
343
Total Claims
$47K
Total Drug Cost
40
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 556
- Total Day Supply
- 16,024
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 67.0 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 43% female / 58% male
- Age Distribution
- <65: 12, 65-74: 20, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Karin Wammack, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
28 claims
- Lisinopril
Lisinopril
28 claims
- Omeprazole
Omeprazole
16 claims
- Atorvastatin Calcium
Atorvastatin Calcium
15 claims
- Losartan Potassium
Losartan Potassium
15 claims
- Tamsulosin Hcl
Tamsulosin Hcl
15 claims
- Metformin Hcl
Metformin Hcl
12 claims
- Trulicity
Trulicity
12 claims
| Drug | Claims |
|---|---|
| Gabapentin | 28 |
| Lisinopril | 28 |
| Omeprazole | 16 |
| Atorvastatin Calcium | 15 |
| Losartan Potassium | 15 |
| Tamsulosin Hcl | 15 |
| Metformin Hcl | 12 |
| Trulicity Dulaglutide | 12 |
* 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 Karin Wammack, MD 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
Karin Wammack, MD's 343 claims are below the specialty average of 3,418.
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 Wammack.
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 →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Karin Wammack, MD's specialty? ▼
Karin Wammack, MD specializes in Family Medicine Physician and practices in Fresno, California. Credentials: MD.
How much does Karin Wammack, MD prescribe under Medicare Part D? ▼
In 2023, Karin Wammack, MD wrote 343 Medicare Part D claims totaling $47K in drug costs for 40 beneficiaries.
Where is Karin Wammack, MD located? ▼
Karin Wammack, MD is located at 1551 E SHAW AVE STE 139, Fresno, CA, 93710. Phone: (559) 320-0490.
What is Karin Wammack, MD's NPI number? ▼
Karin Wammack, MD's National Provider Identifier (NPI) is 1154409969, issued on 11/01/2006.
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 Karin Wammack, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Karin Wammack, MD's most frequently prescribed drugs include Gabapentin, Lisinopril, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Karin Wammack, MD accept Medicare? ▼
Karin Wammack, MD appears in CMS Medicare data with 343 Part D claims and 40 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Karin Wammack, MD's credentials? ▼
Karin Wammack, MD's NPI is 1154409969 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 (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.