NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1144326653 M.D.
Verify on CMS → David Erani, M.D.
Endocrinology, Diabetes & Metabolism Physician in Sturbridge, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,852 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
214
Medicare Part D claims · 50 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
34%
generic claims · 59% 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
David Erani, M.D. filed 214 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Sturbridge, Massachusetts, prescribing 34% generic.
- 214
- Part D claims, 2023
- 34%
- 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.
David Erani, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
214 49th percentile higher than 49% 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)
David Erani, 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 David Erani, M.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
214 92% vs specialty avg
Specialty distribution in Massachusetts
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Massachusetts 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 Endocrinology, Diabetes & Metabolism 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).
David Erani, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 128 MAIN ST, Sturbridge, MA, 01566, with a listed phone of (508) 347-7585. NPI 1144326653 was issued on 09/15/2006.
Medicare Part D records for calendar year 2023 show 214 prescription claims written by this provider, covering 50 Medicare beneficiaries and totaling roughly $136K in drug spend, split 59% brand-name and 34% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 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 | 1144326653 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/15/2006 |
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to David Erani, M.D.. To verify David Erani, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
David Erani, M.D. - brand share 59.0%
Endocrinology, Diabetes & Metabolism Physician average
59% brand-name claims vs 34% generic, on 214 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.
214
Total Claims
$136K
Total Drug Cost
50
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 409
- Total Day Supply
- 12,061
- Brand vs Generic
- 59% brand / 34% generic
- Brand Drug Cost
- $132K
- Generic Drug Cost
- $3K
Patient Demographics
- Average Patient Age
- 66.0 years
- Avg HCC Risk Score
- 1.39
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 12, 65-74: 31, 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 David Erani, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Mounjaro
Mounjaro
27 claims
- Repaglinide
Repaglinide
17 claims
- Ozempic
Ozempic
16 claims
- Jardiance
Jardiance
15 claims
- Methimazole
Methimazole
14 claims
- Trulicity
Trulicity
13 claims
- Metformin Hcl Er
Metformin Hcl Er
12 claims
- Levothyroxine Sodium
Levothyroxine Sodium
11 claims
| Drug | Claims |
|---|---|
| Mounjaro Tirzepatide | 27 |
| Repaglinide | 17 |
| Ozempic Semaglutide | 16 |
| Jardiance Empagliflozin | 15 |
| Methimazole | 14 |
| Trulicity Dulaglutide | 13 |
| Metformin Hcl Er Metformin Hcl | 12 |
| Levothyroxine Sodium | 11 |
| Novolog Flexpen Insulin Aspart | 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 MA →
All providers in Massachusetts →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How David Erani, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
David Erani, M.D.'s 214 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Erani.
Dr. Alice Abbott
MD
Leeds, MA
Dr. Adham Abdel Mottalib
MD
Boston, MA
Dr. Martin Abrahamson
M.D.
Boston, MA
Dr. Gail Adler
MD PHD
Boston, MA
Dr. Alexandra Albert
MD PHD
Worcester, MA
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 Massachusetts 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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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is David Erani, M.D.'s specialty? ▼
David Erani, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Sturbridge, Massachusetts. Credentials: M.D..
How much does David Erani, M.D. prescribe under Medicare Part D? ▼
In 2023, David Erani, M.D. wrote 214 Medicare Part D claims totaling $136K in drug costs for 50 beneficiaries.
Where is David Erani, M.D. located? ▼
David Erani, M.D. is located at 128 MAIN ST, Sturbridge, MA, 01566. Phone: (508) 347-7585.
What is David Erani, M.D.'s NPI number? ▼
David Erani, M.D.'s National Provider Identifier (NPI) is 1144326653, issued on 09/15/2006.
Does David Erani, M.D. prescribe more brand-name or generic drugs? ▼
David Erani, M.D.'s prescribing is 59% brand-name and 34% generic drugs by claim count, with $132K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,852 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 David Erani, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, David Erani, M.D.'s most frequently prescribed drugs include Mounjaro, Repaglinide, Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Erani, M.D. accept Medicare? ▼
David Erani, M.D. appears in CMS Medicare data with 214 Part D claims and 50 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Erani, M.D.'s credentials? ▼
David Erani, M.D.'s NPI is 1144326653 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.