James Sullivan, M.D.
Internal Medicine Physician · Mystic, CT
James 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 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
- 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 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
One hospital or facility affiliation
- Hospital Medicine Associates LLCNew London, CT
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
9 internal medicine physician records list a Mystic practice address
They are 9 of the 242 NPPES records with a Mystic practice address, and 2,830 internal medicine physician records in Connecticut.
All 9 in Mystic → All 2,830 in Connecticut → Every provider in Mystic →
Other internal medicine physician records in Connecticut
- Christina AbavanaBridgeport, CT1508206574
- Hoda Abdel Salam, M.D.New Britain, CT1144509316
- Gada Abdelhafiz, MDNew London, CT1467649558
- Mahmoud Abdelrahman, MDBridgeport, CT1467072868
- Simon Abi-SalehBridgeport, CT1891315529
- Gerard Abidor, D.O.Bridgeport, CT1518014539
- Richard Abraham, M.D.Canton, CT1023044252
- Odaliz Abreu-Lanfranco, MDNew Haven, CT1538276134
- Nila Aburto, MDStamford, CT1396325718
- Angelo Accomando, M.D.East Haven, CT1063454247
Common questions
What is James Sullivan, M.D.'s NPI number?
James 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 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 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.