Justin Timothy Gasper
Internal Medicine Physician · New York, NY
Justin Timothy Gasper is an internal medicine physician with a practice address in New York, New York, and NPI 1366946063, issued on Mar 19, 2018. Check the license (New York 312943, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Justin Timothy Gasper
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 312943 NY
Self-reported in NPPES; status is on the state search - Practice location
- 10 Union SQ E, New York, NY 10003
- Phone
- (212) 844-8100
- Enumerated
- Mar 19, 2018
- Record last updated
- Apr 20, 2022
- Fax
- (212) 844-8152
- Medicare enrollment
- Enrolled (PECOS I20220525000500); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 10 Union SQ E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frida Abramov, PAPhysician Assistant1083833636
- Christine Akoh, MD, PHDDermatology Physician1487238184
- Akash Alexander, PHARM.D., BCPS, CDEAmbulatory Care Pharmacist1497921506
- Shavon Alexander, MS, RDN, CDNRegistered Dietitian1396681847
- Julia Alishayev, PA-CPhysician Assistant1710394358
- Richard Amerling, MDInternal Medicine Physician1437130317
Verify Justin Timothy Gasper 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 312943Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average internal medicine physician in 2024
3,645 Medicare Part D claims for 593 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium480 claims
- Amlodipine Besylate186 claims
- Lisinopril173 claims
- Jardiance141 claims
- Losartan Potassium111 claims
- Metformin Hcl108 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 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).
Justin Timothy Gasper among 12,067 internal medicine physician records in New York
Justin Timothy Gasper is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2018 · median 2002 among the 7,221 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,434 internal medicine physician records list a practice address in New York
They are 2,434 of the 98,468 NPPES records with a practice address in New York, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in New York → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Barbara Cheung, MDNew York, NY 100031023006020
- Alan Dubrow, MDNew York, NY 100031427031830
- Jane Falkenstein, MDNew York, NY 100031083604227
- Michael Felsen, MDNew York, NY 100031891784286
- Jonathan Field, MDNew York, NY 100031578547006
Common questions
What is Justin Timothy Gasper's NPI number?
Justin Timothy Gasper's National Provider Identifier (NPI) is 1366946063, issued on Mar 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Justin Timothy Gasper located?
The NPPES record lists a practice address at 10 Union SQ E, New York, NY, 10003. Phone: (212) 844-8100. Providers update this record themselves, so call before visiting.
How can I verify Justin Timothy Gasper's license?
NPPES lists New York license number 312943, 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 Justin Timothy Gasper prescribe under Medicare Part D?
In 2024, Justin Timothy Gasper had 3,645 Medicare Part D claims for 593 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.