Eric Diamond, M.D.
NPI 1285607861 · Internal Medicine Physician · Westwood, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eric Diamond, M.D. is a Internal Medicine Physician provider in Westwood, MA (NPI 1285607861).
Provider details
- NPI number
- 1285607861
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 54336 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
494 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 224 | $141 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 123 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 67 | $98 |
| Administration of Influenza Virus VaccineG0008 | 33 | $35 |
| Administration of Pneumococcal VaccineG0009 | 20 | $35 |
| Annual Wellness Visit; Includes a Personalized Prevention Plan of Service (pps), Initial VisitG0438 | 15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 566 | 177 |
| Amlodipine Besylate | 393 | 123 |
| Lisinopril | 299 | 98 |
| Hydrochlorothiazide | 275 | 87 |
| Rosuvastatin Calcium | 227 | 81 |
| Losartan Potassium | 212 | 63 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-13
- Last updated
- 2018-11-05
Frequently asked questions
- What is Eric Diamond's NPI number?
- Eric Diamond's National Provider Identifier (NPI) is 1285607861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Diamond's specialty?
- Eric Diamond is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Eric Diamond located?
- Eric Diamond's practice location on file with NPPES is 100 Brigham Way, Westwood, MA 02090.
- What is Eric Diamond's phone number?
- The practice phone number listed in the NPPES registry for Eric Diamond is (781) 471-2200.
- Does Eric Diamond accept Medicare?
- Eric Diamond is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eric Diamond's NPI active?
- Yes — Eric Diamond's NPI (1285607861) is active in the NPPES registry as of the last update on 2018-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.