David Van Diamond, MD
Internal Medicine Physician · Cambridge, MA
David Van Diamond, MD is an internal medicine physician with a practice address in Cambridge, Massachusetts, and NPI 1265411664, issued on Jan 13, 2006. Check the license (Massachusetts 44907, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- David Van Diamond
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 44907 MA
Self-reported in NPPES; status is on the state search - Practice location
- 77 Massachusetts Ave, Cambridge, MA 02139
- Phone
- (617) 253-7625
- Enumerated
- Jan 13, 2006
- Record last updated
- Apr 5, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (617) 253-6373
- Entity
- Type 1 · individual
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Also registered at 77 Massachusetts Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Van Diamond in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 44907Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
22 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
David Van Diamond among 6,825 internal medicine physician records in Massachusetts
David Van Diamond, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2012 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
300 internal medicine physician records list a practice address in Cambridge
They are 300 of the 5,145 NPPES records with a practice address in Cambridge, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Cambridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Baron, MDCambridge, MA 021391376503318
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- Leigh Firn, MDCambridge, MA 021391194706507
- Agnes Graves, M.D.Cambridge, MA 021391932160934
- Howard Heller, MDCambridge, MA 021391508856287
- Michael Kane, MDCambridge, MA 021391376524769
- William Kettyle, MDCambridge, MA 021391306823414
- Karen Leitner, M.D.Cambridge, MA 021391043283658
Common questions
What is David Van Diamond, MD's NPI number?
David Van Diamond, MD's National Provider Identifier (NPI) is 1265411664, issued on Jan 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Van Diamond, MD located?
The NPPES record lists a practice address at 77 Massachusetts Ave, Cambridge, MA, 02139. Phone: (617) 253-7625. Providers update this record themselves, so call before visiting.
How can I verify David Van Diamond, MD's license?
NPPES lists Massachusetts license number 44907, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Van Diamond, MD prescribe under Medicare Part D?
In 2024, David Van Diamond, MD had 22 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.