Mitchell Gronowitz, MD
Hospitalist Physician · New York, NY
Mitchell Gronowitz, MD is a hospitalist physician with a practice address in New York, New York, and NPI 1689250557, issued on Mar 22, 2021. Check the license (New York 322653-01, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mitchell Gronowitz
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 322653-01 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1468 Madison Ave, New York, NY 10029
- Phone
- (212) 241-6500
- Enumerated
- Mar 22, 2021
- Record last updated
- Apr 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20240430004314); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 2021
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 2,067 in New York → Look up another NPI →
Also registered at 1468 Madison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mitchell Gronowitz 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 322653-01Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average hospitalist physician in 2024
101 Medicare Part D claims for 27 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
- Trustees OF Columbia University IN The City OF New YorkNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mitchell Gronowitz among 2,067 hospitalist physician records in New York
Mitchell Gronowitz, 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 2021, is newer than 83% of them.
- NPI issued2021 · 83% of these records are older, 11% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2021 · median 2013 among the 1,716 with a school on file
- Record last updated2024 · 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
- Ramin Asgary, MDNew York, NY 100291235353053
- Imuetinyan Asuen, MDNew York, NY 100291316968530
- Andrew Dunn, MDNew York, NY 100291326078833
- Erin Gabriel, M.D.New York, NY 100291669658290
- Brian Markoff, MDNew York, NY 100291083646111
- Yuko Merchant, MDNew York, NY 100291134304108
- Vinh-Tung NguyenNew York, NY 100291497927750
- Peter Rachlin, MDNew York, NY 100291528264132
Common questions
What is Mitchell Gronowitz, MD's NPI number?
Mitchell Gronowitz, MD's National Provider Identifier (NPI) is 1689250557, issued on Mar 22, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell Gronowitz, MD located?
The NPPES record lists a practice address at 1468 Madison Ave, New York, NY, 10029. Phone: (212) 241-6500. Providers update this record themselves, so call before visiting.
How can I verify Mitchell Gronowitz, MD's license?
NPPES lists New York license number 322653-01, 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 Mitchell Gronowitz, MD prescribe under Medicare Part D?
In 2024, Mitchell Gronowitz, MD had 101 Medicare Part D claims for 27 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.