NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1558427930 M.D.
Verify on CMS → Eric Epstein, M.D.
Endocrinology, Diabetes & Metabolism Physician in Lebanon, New Hampshire.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,871 in Endocrinology, Diabetes & Metabolism 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
508
Medicare Part D claims · 68 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
53%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
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
Eric Epstein, M.D. reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 508 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 508
- Part D claims, 2023
- 53%
- 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.
Eric Epstein, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% 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 Eric Epstein, M.D. sits
This provider among endocrinology, diabetes & metabolism physician peers
Across the 2,521 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, Eric Epstein, M.D. writes more Part D claims than 16% of them and scores higher on MIPS quality than 93% - placing this provider in the lower-volume, high-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 endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Eric Epstein, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Eric Epstein, M.D. 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 Eric Epstein, M.D.?
High performer (top quartile)Primary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
508 81% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in New Hampshire
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among New Hampshire providers
Medicare quality performance, MIPS
Eric Epstein, M.D.'s 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 100/100 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).
Eric Epstein, M.D. appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 1 MEDICAL CENTER DR, Lebanon, NH, 03756, with a listed phone of (603) 650-5000. NPI 1558427930 was issued on 12/29/2006.
Medicare Part D records for calendar year 2023 show 508 prescription claims written by this provider, covering 68 Medicare beneficiaries and totaling roughly $176K in drug spend, split 41% brand-name and 53% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year, compared with the national average of 83.1.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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 | 1558427930 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/29/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
100
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Above average
Eric Epstein, M.D. - brand share 41.0%
Endocrinology, Diabetes & Metabolism Physician average
41% brand-name claims vs 53% generic, on 508 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.
508
Total Claims
$176K
Total Drug Cost
68
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,303
- Total Day Supply
- 38,965
- Brand vs Generic
- 41% brand / 53% generic
- Brand Drug Cost
- $166K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 74.9 years
- Avg HCC Risk Score
- 1.78
- Gender Split
- 81% female / 19% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Eric Epstein, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
124 claims
- Synthroid 41
Synthroid
41 claims
- Risedronate Sodium 18
Risedronate Sodium
18 claims
- Jardiance 15
Jardiance
15 claims
- Trulicity 15
Trulicity
15 claims
- Novolog Flexpen 14
Novolog Flexpen
14 claims
- Hydrocortisone 13
Hydrocortisone
13 claims
- Metformin Hcl Er 13
Metformin Hcl Er
13 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 124 |
| Synthroid Levothyroxine Sodium | 41 |
| Risedronate Sodium | 18 |
| Jardiance Empagliflozin | 15 |
| Trulicity Dulaglutide | 15 |
| Novolog Flexpen Insulin Aspart | 14 |
| Hydrocortisone | 13 |
| Metformin Hcl Er Metformin Hcl | 13 |
| Amlodipine Besylate | 11 |
| Tresiba Flextouch U-200 Insulin Degludec | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in NH →
All providers in New Hampshire →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Eric Epstein, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Eric Epstein, M.D.'s 508 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Epstein.
Dr. Stephanie Barry
MD
Dover, NH
Dr. Paul Beisswenger
M.D.
Lebanon, NH
Dr. Kathleen Belbruno
MD
Lebanon, NH
Dr. Jenny Bello Ramos
MD
Manchester, NH
Dr. Benjamin Boh
D.O.
Lebanon, NH
Compare Endocrinology, Diabetes & Metabolism 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 New Hampshire medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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 Eric Epstein, M.D.'s specialty? ▼
Eric Epstein, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Lebanon, New Hampshire. Credentials: M.D..
How much does Eric Epstein, M.D. prescribe under Medicare Part D? ▼
In 2023, Eric Epstein, M.D. wrote 508 Medicare Part D claims totaling $176K in drug costs for 68 beneficiaries.
What is Eric Epstein, M.D.'s Medicare quality score? ▼
Eric Epstein, M.D. has a CMS MIPS Final Score of 100/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Eric Epstein, M.D. located? ▼
Eric Epstein, M.D. is located at 1 MEDICAL CENTER DR, Lebanon, NH, 03756. Phone: (603) 650-5000.
What is Eric Epstein, M.D.'s NPI number? ▼
Eric Epstein, M.D.'s National Provider Identifier (NPI) is 1558427930, issued on 12/29/2006.
Does Eric Epstein, M.D. prescribe more brand-name or generic drugs? ▼
Eric Epstein, M.D.'s prescribing is 41% brand-name and 53% generic drugs by claim count, with $166K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Eric Epstein, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Eric Epstein, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Synthroid, Risedronate Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eric Epstein, M.D. accept Medicare? ▼
Eric Epstein, M.D. appears in CMS Medicare data with 508 Part D claims and 68 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Epstein, M.D.'s credentials? ▼
Eric Epstein, M.D.'s NPI is 1558427930 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.
- 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.
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.