David Diamond, MD
NPI 1265411664 · Internal Medicine Physician · Cambridge, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Diamond, MD is a Internal Medicine Physician provider in Cambridge, MA (NPI 1265411664).
Provider details
- NPI number
- 1265411664
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 44907 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-13
- Last updated
- 2012-04-05
Frequently asked questions
- What is David Diamond's NPI number?
- David Diamond's National Provider Identifier (NPI) is 1265411664, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Diamond's specialty?
- David Diamond is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Diamond located?
- David Diamond's practice location on file with NPPES is 77 Massachusetts Ave, Cambridge, MA 02139.
- What is David Diamond's phone number?
- The practice phone number listed in the NPPES registry for David Diamond is (617) 253-7625.
- Does David Diamond accept Medicare?
- David Diamond is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Diamond's NPI active?
- Yes — David Diamond's NPI (1265411664) is active in the NPPES registry as of the last update on 2012-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.