James Francis Sullivan, M.D.
Internal Medicine Physician · Mystic, CT
James Francis Sullivan, M.D. is an internal medicine physician with a practice address in Mystic, Connecticut, and NPI 1780679472, issued on Sep 19, 2005. Check the license (Connecticut 017250, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- James Francis Sullivan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 017250 CT
Self-reported in NPPES; status is on the state search - Practice location
- 200 Sandy Hollow RD, Mystic, CT 06355
- Phone
- (860) 572-8911
- Enumerated
- Sep 19, 2005
- Record last updated
- Dec 22, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (860) 572-7758
- Medicare enrollment
- Enrolled (PECOS I20061219000133); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 1973
- Entity
- Type 1 · individual
Also registered at 200 Sandy Hollow RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Blum, M.D.Internal Medicine Physician1194710210
- Rosemary Bontempi, M.D.Internal Medicine Physician1346235462
- Howard Brensilver, M.D.Internal Medicine Physician1336134451
- Warren Fields, M.D.Internal Medicine Physician1821083999
- Prior Parker, MDOphthalmology Physician1326076795
- James Scarles, M.D.Internal Medicine Physician1194710269
Verify James Francis Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 017250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Hospital Medicine Associates LLCNew London, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
10 internal medicine physician records list a practice address in Mystic
They are 10 of the 242 NPPES records with a practice address in Mystic, and 2,623 internal medicine physician records in Connecticut.
All 10 in Mystic → All 2,623 in Connecticut → Every provider in Mystic →
Other internal medicine physician records in Connecticut
- Hoda Abdel Salam, M.D.New Britain, CT1144509316
- Gada Abdelhafiz, MDNew London, CT1467649558
- Racha Abi Melhem, MDDerby, CT1902471352
- Gerard Abidor, D.O.Bridgeport, CT1518014539
- Lilyan AbrahamFarmington, CT1447693254
- Richard Abraham, M.D.Canton, CT1023044252
- Odaliz Abreu-Lanfranco, MDNew Haven, CT1538276134
- Kenneth Abriola, MDGlastonbury, CT1083693022
- Florentino Abueg, MDSouthbury, CT1649372558
- Nila Aburto, MDStamford, CT1396325718
Common questions
What is James Francis Sullivan, M.D.'s NPI number?
James Francis Sullivan, M.D.'s National Provider Identifier (NPI) is 1780679472, issued on Sep 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Francis Sullivan, M.D. located?
The NPPES record lists a practice address at 200 Sandy Hollow RD, Mystic, CT, 06355. Phone: (860) 572-8911. Providers update this record themselves, so call before visiting.
How can I verify James Francis Sullivan, M.D.'s license?
NPPES lists Connecticut license number 017250, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. 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.