John S. Greely, M.D.
Hospitalist Physician · New York, NY
John S. Greely, M.D. is a hospitalist physician with a practice address in New York, New York, and NPI 1922091842, issued on Aug 25, 2005. Check the license (New York 200383, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John S. Greely
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 200383 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1090 Amsterdam Ave, New York, NY 10025
- Phone
- (212) 961-5500
- Enumerated
- Aug 25, 2005
- Record last updated
- May 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (212) 531-4590
- Medicaid ID
- 01592745 NY
- Medicare enrollment
- Enrolled (PECOS I20060426000090); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 1992
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 2,067 in New York → Look up another NPI →
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Verify John S. Greely 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 200383Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hospitalist physician in 2024
17 Medicare Part D claims for 12 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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
- Icahn School OF Medicine AT Mount SinaiNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John S. Greely among 2,067 hospitalist physician records in New York
John S. Greely, M.D. is one of 2,067 hospitalist physician records with a practice address in New York. 93% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1992 · median 2013 among the 1,716 with a school on file
- Record last updated2021 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in New York
There are 2,067 hospitalist physician records in New York.
All 2,067 in New York → Every provider in New York → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Andrew Choi, M.D.New York, NY 100251760640874
- Grace Farris, MDNew York, NY 100251093981425
- David Hefer, MDNew York, NY 100251174594188
- Hani Judeh, M.D.New York, NY 100251144484817
- Daniel Knecht, M.D.New York, NY 100251457650608
- Rishi Malhan, M.D.New York, NY 100251649570151
- Bharat Monga, M.D.New York, NY 100251972648954
- Camille Noel, M.D.New York, NY 100251053519801
Common questions
What is John S. Greely, M.D.'s NPI number?
John S. Greely, M.D.'s National Provider Identifier (NPI) is 1922091842, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John S. Greely, M.D. located?
The NPPES record lists a practice address at 1090 Amsterdam Ave, New York, NY, 10025. Phone: (212) 961-5500. Providers update this record themselves, so call before visiting.
How can I verify John S. Greely, M.D.'s license?
NPPES lists New York license number 200383, 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.
How much does John S. Greely, M.D. prescribe under Medicare Part D?
In 2024, John S. Greely, M.D. had 17 Medicare Part D claims for 12 beneficiaries; the average among hospitalist physician prescribers was 521. 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.