NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1265925598 MD
Verify on CMS → Ermarefe Fernandez, MD
Internal Medicine Physician in Philadelphia, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal 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
249
Medicare Part D claims · 122 beneficiaries · Internal Medicine Physician avg: 3K
MIPS score
47.1/100
▼ 36 pts below national avg 83.1 · Below average
Industry payments
$36.73
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ermarefe Fernandez, MD reported a CMS MIPS final score of 47.1/100 - below the 83.1 national average - and filed 249 Medicare Part D claims in 2023.
- 47.1/100
- MIPS score · -36 vs avg
- 249
- Part D claims, 2023
- 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.
Ermarefe Fernandez, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
47 4th percentile higher than 4% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Ermarefe Fernandez, MD sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ermarefe Fernandez, MD writes more Part D claims than 28% of them and scores higher on MIPS quality than 5% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Ermarefe Fernandez, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ermarefe Fernandez, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Ermarefe Fernandez, MD?
Below national averagePrimary specialty
Internal Medicine Physician
Medicare Part D claims
249 91% vs specialty avg
MIPS final score
47.1/100 36 pts vs avg
Specialty distribution in Pennsylvania
How Internal Medicine Physician compares to other specialties among Pennsylvania providers
Medicare quality performance, MIPS
Ermarefe Fernandez, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 47.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 47.1/100 vs national avg 83.1
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).
Ermarefe Fernandez, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 245 N 15TH ST FL 6, Philadelphia, PA, 19102, with a listed phone of (215) 762-6900. NPI 1265925598 was issued on 06/12/2018.
Medicare Part D records for calendar year 2023 show 249 prescription claims written by this provider, covering 122 Medicare beneficiaries and totaling roughly $17K in drug spend, with an opioid prescribing rate of 8.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 47.1/100 for the 2023 performance year (Quality 28.3), compared with the national average of 83.1.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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 | 1265925598 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/12/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
47.0937
Final Score
Avg: 83.1
28.3333
Quality
Reporting: Individual
Hospital and facility affiliations
Facilities where Ermarefe Fernandez, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Hospital Physician Services - Southeast Professional Corporation
Asheville, NC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Ermarefe Fernandez, MD. Source: openpaymentsdata.cms.gov.
Total received
$37
Largest payer
E.R. Squibb & Sons, L.L.C.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Ermarefe Fernandez, MD. To verify Ermarefe Fernandez, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania 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.
249
Total Claims
$17K
Total Drug Cost
122
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 262
- Total Day Supply
- 5,514
- Generic Drug Cost
- $2K
- Opioid Claims
- 22 (8.8% rate)
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 69.4 years
- Avg HCC Risk Score
- 2.47
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 35, 65-74: 43, 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 Ermarefe Fernandez, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
17 claims
- Oxycodone Hcl
Oxycodone Hcl
14 claims
- Amlodipine Besylate
Amlodipine Besylate
13 claims
- Eliquis
Eliquis
11 claims
| Drug | Claims |
|---|---|
| Prednisone | 17 |
| Oxycodone Hcl | 14 |
| Amlodipine Besylate | 13 |
| Eliquis Apixaban | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Ermarefe Fernandez, MD fits within the Internal Medicine Physician landscape nationally.
172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Ermarefe Fernandez, MD's 249 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Fernandez.
Dr. Erin Aakhus
M.D.
Philadelphia, PA
Dr. Muhammad Aamir
MD
Allentown, PA
Dr. Saira Aamir
MD
York, PA
Dr. John Aaron
MD
West Grove, PA
Dr. Todd Aaron
MD
Philadelphia, PA
Compare Internal 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 Pennsylvania medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
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How insurance networks affect your costs
Telehealth Guide
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Frequently Asked Questions
What is Ermarefe Fernandez, MD's specialty? ▼
Ermarefe Fernandez, MD specializes in Internal Medicine Physician and practices in Philadelphia, Pennsylvania. Credentials: MD.
How much does Ermarefe Fernandez, MD prescribe under Medicare Part D? ▼
In 2023, Ermarefe Fernandez, MD wrote 249 Medicare Part D claims totaling $17K in drug costs for 122 beneficiaries.
What is Ermarefe Fernandez, MD's Medicare quality score? ▼
Ermarefe Fernandez, MD has a CMS MIPS Final Score of 47.1/100 (Quality: 28.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ermarefe Fernandez, MD located? ▼
Ermarefe Fernandez, MD is located at 245 N 15TH ST FL 6, Philadelphia, PA, 19102. Phone: (215) 762-6900.
What is Ermarefe Fernandez, MD's NPI number? ▼
Ermarefe Fernandez, MD's National Provider Identifier (NPI) is 1265925598, issued on 06/12/2018.
Does Ermarefe Fernandez, MD prescribe opioids? ▼
Yes, Ermarefe Fernandez, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 8.8%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Ermarefe Fernandez, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ermarefe Fernandez, MD's most frequently prescribed drugs include Prednisone, Oxycodone Hcl, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ermarefe Fernandez, MD accept Medicare? ▼
Ermarefe Fernandez, MD appears in CMS Medicare data with 249 Part D claims and 122 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ermarefe Fernandez, MD's credentials? ▼
Ermarefe Fernandez, MD's NPI is 1265925598 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.
- 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 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.