C R. Kahn, M.D.
Endocrinology, Diabetes & Metabolism Physician · Boston, MA
C R. Kahn, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Boston, Massachusetts, and NPI 1891845830, issued on Jan 11, 2007. Check the license (Massachusetts 48036, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- C R. Kahn
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 48036 MA
Self-reported in NPPES; status is on the state search - Practice location
- Joslin Diabetes Center, Boston, MA 02215
- Phone
- (617) 732-2635
- Enumerated
- Jan 11, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 522 in Massachusetts → Look up another NPI →
Also registered at Joslin Diabetes Center
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tihamer Orban, M.D.Pediatric Endocrinology Physician1548292071
- William Sullivan, M.D.Endocrinology, Diabetes & Metabolism Physician1922107234
- Christine Turcotte, CPNPPediatric Nurse Practitioner1679908925
Verify C R. Kahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 48036Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $3,781.90
3 payments; by number, the most common kind was compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Alnylam Pharmaceuticals Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
C R. Kahn among 522 endocrinology, diabetes & metabolism physician records in Massachusetts
C R. Kahn, M.D. is one of 522 endocrinology, diabetes & metabolism physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 40% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2007 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Massachusetts
There are 522 endocrinology, diabetes & metabolism physician records in Massachusetts.
All 522 in Massachusetts → Every provider in Boston → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Richard Beaser, MDBoston, MA 022151447204540
- Ramachandiran Cooppan, M.D.Boston, MA 022151366499097
- Aaron Cypess, M.D., PH.D.Boston, MA 022151598730749
- Rachael Fawcett, M.D.Boston, MA 022151801879945
- Robert Gabbay, M.D.Boston, MA 022151720036627
- Jason Gaglia, M.D.Boston, MA 022151023098605
- Mark Herman, M.D.Boston, MA 022151043261795
- George King, M.D.Boston, MA 022151669458816
Common questions
What is C R. Kahn, M.D.'s NPI number?
C R. Kahn, M.D.'s National Provider Identifier (NPI) is 1891845830, issued on Jan 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is C R. Kahn, M.D. located?
The NPPES record lists a practice address at Joslin Diabetes Center, Boston, MA, 02215. Phone: (617) 732-2635. Providers update this record themselves, so call before visiting.
How can I verify C R. Kahn, M.D.'s license?
NPPES lists Massachusetts license number 48036, 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.
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.