Ryan John Sullivan, DO
Critical Care Medicine (Internal Medicine) Physician · Manhasset, NY
Ryan John Sullivan, DO is a critical care medicine (internal medicine) physician with a practice address in Manhasset, New York, and NPI 1366078495, issued on Mar 20, 2020. Check the license (New York 334527, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ryan John Sullivan
- Credential
- DO
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 334527 NY
Self-reported in NPPES; status is on the state search - Practice location
- 300 Community Dr, Manhasset, NY 11030
- Phone
- (516) 562-0100
- Enumerated
- Mar 20, 2020
- Record last updated
- Jul 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20250404001927); accepts Medicare assignment
- Medical or professional school
- Touro Un Col Of Osteopathic Medicine, New York, 2020
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 486 in New York → Look up another NPI →
Also registered at 300 Community Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrea Abbondondolo, PAReligious Nonmedical Nursing Personnel1154441186
- Mahmoud AbdelazizInternal Medicine Physician1750814562
- Fatima AbidPhysician Assistant1215669346
- Ahmed AboseriaStudent in an Organized Health Care Education/Training Program1114777067
- Nikil Abraham, CRNACertified Registered Nurse Anesthetist1962180455
- Rolson Abraham, RPHPharmacist1346673209
Verify Ryan John 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 334527Check 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
- North Shore-Lij Medical PCManhasset, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan John Sullivan among 486 critical care medicine (internal medicine) physician records in New York
Ryan John Sullivan, DO is one of 486 critical care medicine (internal medicine) physician records with a practice address in New York. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 93% of them.
- NPI issued2020 · 93% of these records are older, 3% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2020 · median 2006 among the 389 with a school on file
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in New York
There are 486 critical care medicine (internal medicine) physician records in New York.
All 486 in New York → Every provider in Manhasset → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Gioiamaria Berna, M.D.Manhasset, NY 110301063647840
- Hugh Cassiere, MDManhasset, NY 110301235101403
- Kimberly Clark, MDManhasset, NY 110301235255084
- Justina Hessel, M.D.Manhasset, NY 110301740510379
- Dae Hyeon Kim, MDManhasset, NY 110301144614280
- Aleksandr Melamud, MDManhasset, NY 110301982947917
- Ratnam Santoshi, MBBSManhasset, NY 110301033464698
- Danielle Walsh, D.O.Manhasset, NY 110301861844185
Common questions
What is Ryan John Sullivan, DO's NPI number?
Ryan John Sullivan, DO's National Provider Identifier (NPI) is 1366078495, issued on Mar 20, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ryan John Sullivan, DO located?
The NPPES record lists a practice address at 300 Community Dr, Manhasset, NY, 11030. Phone: (516) 562-0100. Providers update this record themselves, so call before visiting.
How can I verify Ryan John Sullivan, DO's license?
NPPES lists New York license number 334527, 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. 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.