Jeremiah O'Sullivan, MD
Internal Medicine Physician · Buffalo, NY
Jeremiah O'Sullivan, MD is an internal medicine physician with a practice address in Buffalo, New York, and NPI 1104893833, issued on Mar 1, 2006. Check the license (New York 100021, as entered in NPPES) on the NYS Education Department, Office of the Professions; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Jeremiah O'Sullivan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 100021 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2218 Main Street, Buffalo, NY 14214
- Phone
- (716) 834-4141
- Enumerated
- Mar 1, 2006
- Record last updated
- Jul 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (716) 838-5840
- Medicaid ID
- 00611243 NY
- Entity
- Type 1 · individual
Verify Jeremiah O'Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 100021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
293 internal medicine physician records list a practice address in Buffalo
They are 293 of the 13,287 NPPES records with a practice address in Buffalo, and 12,067 internal medicine physician records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 293 in Buffalo → All 12,067 in New York → Every provider in Buffalo →
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Common questions
What is Jeremiah O'Sullivan, MD's NPI number?
Jeremiah O'Sullivan, MD's National Provider Identifier (NPI) is 1104893833, issued on Mar 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jeremiah O'Sullivan, MD located?
The NPPES record lists a practice address at 2218 Main Street, Buffalo, NY, 14214. Phone: (716) 834-4141. Providers update this record themselves, so call before visiting.
How can I verify Jeremiah O'Sullivan, MD's license?
NPPES lists New York license number 100021, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. 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. 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.