John M. Callahan, MD
Hospitalist Physician · Syracuse, NY
John M. Callahan, MD is a hospitalist physician with a practice address in Syracuse, New York, and NPI 1568454528, issued on Aug 16, 2005. Check the license (New York 208546, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John M. Callahan
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 208546 NY
Self-reported in NPPES; status is on the state search - Practice location
- 301 Prospect Ave, Syracuse, NY 13203
- Phone
- (315) 448-5704
- Enumerated
- Aug 16, 2005
- Record last updated
- Apr 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (315) 423-6853
- Medicaid ID
- 01936736 NY
- Medicare enrollment
- Enrolled (PECOS I20050315000428); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 1986
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 2,067 in New York → Look up another NPI →
Also registered at 301 Prospect Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John M. Callahan 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 208546Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average hospitalist physician in 2024
38 Medicare Part D claims, 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.
Industry payments in 2024: $15.53
1 payment: food and beverage; the largest payer was Astellas Pharma US Inc. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 4 group practices
- Crouse Health Hospital IncSyracuse, NY
- Mobile Physician Services PLLCBuffalo, NY
- Physician Mobile Medical Care PCBuffalo, NY
- St Josephs Medical PCSyracuse, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John M. Callahan among 2,067 hospitalist physician records in New York
John M. Callahan, MD 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
- Graduated1986 · median 2013 among the 1,716 with a school on file
- Record last updated2013 · 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).
103 hospitalist physician records list a practice address in Syracuse
They are 103 of the 9,922 NPPES records with a practice address in Syracuse, and 2,067 hospitalist physician records in New York.
All 2,067 in New York → Every provider in Syracuse → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Sumera Ahmed, MDSyracuse, NY 132031720248685
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- Justin Bertrand, M.D.Syracuse, NY 132031275747107
- Mark Emerick, MDSyracuse, NY 132031245343417
- Ravi Gangireddy, MDSyracuse, NY 132031477562304
- Marilyn Glauber, MDSyracuse, NY 132031619131323
- Grant Kelley, M.D.Syracuse, NY 132031922259845
Common questions
What is John M. Callahan, MD's NPI number?
John M. Callahan, MD's National Provider Identifier (NPI) is 1568454528, issued on Aug 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John M. Callahan, MD located?
The NPPES record lists a practice address at 301 Prospect Ave, Syracuse, NY, 13203. Phone: (315) 448-5704. Providers update this record themselves, so call before visiting.
How can I verify John M. Callahan, MD's license?
NPPES lists New York license number 208546, 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 M. Callahan, MD prescribe under Medicare Part D?
In 2024, John M. Callahan, MD had 38 Medicare Part D claims; 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.