Ian Douglas McCart, M.D.
Internal Medicine Physician · Cambridge, MA
Ian Douglas McCart, M.D. is an internal medicine physician with a practice address in Cambridge, Massachusetts, and NPI 1952362907, issued on Mar 29, 2006. Check the license (Massachusetts 220806, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ian Douglas McCart
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 220806 MA
Self-reported in NPPES; status is on the state search - Practice location
- 11 Sciarappa St, Cambridge, MA 02141
- Phone
- (617) 233-4356
- Enumerated
- Mar 29, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100205000490); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Verify Ian Douglas McCart in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 220806Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
254 Medicare Part D claims for 106 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 17 claims were for opioids.
Most prescribed
- Atorvastatin Calcium16 claims
- Furosemide16 claims
- Metoprolol Tartrate16 claims
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.
Bills Medicare through one group practice
- Permanente Medical Group IncSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Douglas McCart among 6,825 internal medicine physician records in Massachusetts
Ian Douglas McCart, M.D. 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 fileYes · 60% of these records are
- Graduated2001 · median 2004 among the 4,103 with a school on file
- Record last updated2007 · 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
- Jackie Bronico, M.D., MSCCambridge, MA 021411275912164
- Leslie Chun, M.D.Boston, MA 021411093804940
- Cassie Frank, M.D., M.P.H.Cambridge, MA 021411407054984
- Anthony Lee, MDCambridge, MA 021411972557270
- Jia LiuCambridge, MA 021411063857969
- Peter Schlesinger, M.D.Cambridge, MA 021411265409650
- Gunjan Senapati, M.D.Cambridge, MA 021411851523195
- Basmaa Ali, MDCambridge, MA 021421073510822
Common questions
What is Ian Douglas McCart, M.D.'s NPI number?
Ian Douglas McCart, M.D.'s National Provider Identifier (NPI) is 1952362907, issued on Mar 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ian Douglas McCart, M.D. located?
The NPPES record lists a practice address at 11 Sciarappa St, Cambridge, MA, 02141. Phone: (617) 233-4356. Providers update this record themselves, so call before visiting.
How can I verify Ian Douglas McCart, M.D.'s license?
NPPES lists Massachusetts license number 220806, 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 Ian Douglas McCart, M.D. prescribe under Medicare Part D?
In 2024, Ian Douglas McCart, M.D. had 254 Medicare Part D claims for 106 beneficiaries; 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.