Jonathan Grenadir, M.D.
Emergency Medicine Physician · New York, NY
Jonathan Grenadir, M.D. is an emergency medicine physician with a practice address in New York, New York, and NPI 1861855314, issued on Apr 1, 2016. Check the license (New York 297429, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Jonathan Grenadir
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 297429 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1000 10TH Ave, New York, NY 10019
- Phone
- (212) 523-4000
- Enumerated
- Apr 1, 2016
- Record last updated
- May 23, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190604001321); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at 1000 10TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Minako Abe, MDEmergency Medicine Physician1578635249
- Ayelet AbelowHospitalist Physician1073141578
- Michael Abiri, M.D.Diagnostic Radiology Physician1598718298
- Adal Abonamah, DOStudent in an Organized Health Care Education/Training Program1821790916
- Joseph Abraham, MD, MBAStudent in an Organized Health Care Education/Training Program1316649288
Verify Jonathan Grenadir 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 297429Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average emergency medicine physician in 2024
72 Medicare Part D claims for 51 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Ibuprofen12 claims
- Amoxicillin-Clavulanate Potass11 claims
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 2 group practices
- Icahn School OF Medicine AT Mount SinaiNew York, NY
- 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).
Jonathan Grenadir among 5,025 emergency medicine physician records in New York
Jonathan Grenadir, M.D. is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 67% of them.
- NPI issued2016 · 67% of these records are older, 29% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2016 · median 2013 among the 3,232 with a school on file
- Record last updated2019 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,075 emergency medicine physician records list a practice address in New York
They are 1,075 of the 98,468 NPPES records with a practice address in New York, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in New York → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Minako Abe, MDNew York, NY 100191578635249
- Mitchell Adelstein, MDNew York, NY 100191811069503
- Patricia Carey, MDNew York, NY 100191609949247
- Jason Chu, MDNew York, NY 100191861565434
- Mark Clark, MDNew York, NY 100191588737167
- Daniel Egan, MDNew York, NY 100191962493585
- Marian Gambrell, MDNew York, NY 100191720151095
- Matthew Lurin, MD MBA FACEP CPENew York, NY 100191811060635
Common questions
What is Jonathan Grenadir, M.D.'s NPI number?
Jonathan Grenadir, M.D.'s National Provider Identifier (NPI) is 1861855314, issued on Apr 1, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Grenadir, M.D. located?
The NPPES record lists a practice address at 1000 10TH Ave, New York, NY, 10019. Phone: (212) 523-4000. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Grenadir, M.D.'s license?
NPPES lists New York license number 297429, 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 Jonathan Grenadir, M.D. prescribe under Medicare Part D?
In 2024, Jonathan Grenadir, M.D. had 72 Medicare Part D claims for 51 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.