NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1497778427 M.D.
Verify on CMS → Ernesto Agbayani, M.D.
Family Medicine Physician in Martinsburg, West Virginia.
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
5K
Medicare Part D claims · 360 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ernesto Agbayani, M.D. filed 4,579 Medicare Part D claims in 2023 as a Family Medicine Physician in Martinsburg, West Virginia, prescribing 87% generic.
- 5K
- Part D claims, 2023
- 87%
- generic prescribing
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.
Ernesto Agbayani, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,579 Top 7% higher than 93% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Ernesto Agbayani, 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 Ernesto Agbayani, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
4,579 34% vs specialty avg
Specialty distribution in West Virginia
How Family Medicine Physician compares to other specialties among West Virginia 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).
Ernesto Agbayani, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 155 HEALTH CARE LN, Martinsburg, WV, 25401, with a listed phone of (304) 596-6911. NPI 1497778427 was issued on 07/25/2006.
Medicare Part D records for calendar year 2023 show 4,579 prescription claims written by this provider, covering 360 Medicare beneficiaries and totaling roughly $401K in drug spend, split 12% brand-name and 87% generic by claim count, with an opioid prescribing rate of 0.5%.
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 | 1497778427 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/25/2006 |
Brand vs generic prescribing mix · Typical
Ernesto Agbayani, M.D. - brand share 12.0%
Family Medicine Physician average
12% brand-name claims vs 87% generic, on 4,579 2023 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 2023.
4,579
Total Claims
$401K
Total Drug Cost
360
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,738
- Total Day Supply
- 316,074
- Brand vs Generic
- 12% brand / 87% generic
- Brand Drug Cost
- $336K
- Generic Drug Cost
- $63K
- Opioid Claims
- 25 (0.5% rate)
- Antibiotic Claims
- 56
Patient Demographics
- Average Patient Age
- 74.5 years
- Avg HCC Risk Score
- 0.99
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 28, 65-74: 164, 75-84: 115, 85+: 53
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ernesto Agbayani, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
263 claims
- Amlodipine Besylate
Amlodipine Besylate
252 claims
- Atorvastatin Calcium
Atorvastatin Calcium
223 claims
- Hydrochlorothiazide
Hydrochlorothiazide
219 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
188 claims
- Losartan Potassium
Losartan Potassium
172 claims
- Lisinopril
Lisinopril
116 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
110 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 263 |
| Amlodipine Besylate | 252 |
| Atorvastatin Calcium | 223 |
| Hydrochlorothiazide | 219 |
| Rosuvastatin Calcium | 188 |
| Losartan Potassium | 172 |
| Lisinopril | 116 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 110 |
| Metoprolol Succinate | 94 |
| Metformin Hcl Er Metformin Hcl | 92 |
* 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 Ernesto Agbayani, 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
Ernesto Agbayani, M.D.'s 4,579 claims are above the specialty average of 3,418.
Nearby Family Medicine Physician Providers in West Virginia
Other clinicians with the same primary specialty enrolled in West Virginia, drawn from the same CMS NPPES roster as Agbayani.
Dr. Muneel Abbas
MD
Williamson, WV
Dr. Ahmed Abdelgaber
MD
Huntington, WV
Dr. Michelle Abe
D.O.
Martinsburg, WV
Dr. Amir Abouelfetouh Elsehmawy
MD
Morgantown, WV
Dr. Alice Ackerman
DO
Philippi, WV
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 West Virginia 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 Ernesto Agbayani, M.D.'s specialty? ▼
Ernesto Agbayani, M.D. specializes in Family Medicine Physician and practices in Martinsburg, West Virginia. Credentials: M.D..
How much does Ernesto Agbayani, M.D. prescribe under Medicare Part D? ▼
In 2023, Ernesto Agbayani, M.D. wrote 4,579 Medicare Part D claims totaling $401K in drug costs for 360 beneficiaries.
Where is Ernesto Agbayani, M.D. located? ▼
Ernesto Agbayani, M.D. is located at 155 HEALTH CARE LN, Martinsburg, WV, 25401. Phone: (304) 596-6911.
What is Ernesto Agbayani, M.D.'s NPI number? ▼
Ernesto Agbayani, M.D.'s National Provider Identifier (NPI) is 1497778427, issued on 07/25/2006.
Does Ernesto Agbayani, M.D. prescribe more brand-name or generic drugs? ▼
Ernesto Agbayani, M.D.'s prescribing is 12% brand-name and 87% generic drugs by claim count, with $336K in brand drug costs.
Does Ernesto Agbayani, M.D. prescribe opioids? ▼
Yes, Ernesto Agbayani, M.D. had 25 opioid claims in 2023 with an opioid prescribing rate of 0.5%.
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 Ernesto Agbayani, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Ernesto Agbayani, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ernesto Agbayani, M.D. accept Medicare? ▼
Ernesto Agbayani, M.D. appears in CMS Medicare data with 4,579 Part D claims and 360 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ernesto Agbayani, M.D.'s credentials? ▼
Ernesto Agbayani, M.D.'s NPI is 1497778427 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
Compiled from official public sources by the PlainDoctor editorial team.
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.