Ian G. Harnik, M.D.
Gastroenterology Physician · Bronx, NY
Ian G. Harnik, M.D. is a gastroenterology physician with a practice address in Bronx, New York, and NPI 1851506737, issued on May 13, 2007. Check the license (New York 239608, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ian G. Harnik
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 239608 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3333 Henry Hudson Pkwy, Bronx, NY 10463
- Phone
- (718) 796-1000
- Enumerated
- May 13, 2007
- Record last updated
- Aug 24, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210714001685); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,797 in New York → Look up another NPI →
Also registered at 3333 Henry Hudson Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amnon Gotian, M.D.Gastroenterology Physician1841370871
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Verify Ian G. Harnik 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 239608Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average gastroenterology physician in 2024
752 Medicare Part D claims for 218 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Omeprazole157 claims
- Linzess130 claims
- Gavilyte-C68 claims
- Famotidine28 claims
- Loperamide23 claims
- Metoclopramide Hcl23 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.
Industry payments in 2024: $503.08
47 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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 2 group practices
- Gastroenterology And Liver Associates OF Riverdale PCBronx, NY
- Urban Health Plan IncBronx, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian G. Harnik among 1,797 gastroenterology physician records in New York
Ian G. Harnik, M.D. is one of 1,797 gastroenterology physician records with a practice address in New York. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2004 · median 1999 among the 1,378 with a school on file
- Record last updated2016 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in New York
There are 1,797 gastroenterology physician records in New York.
All 1,797 in New York → Every provider in Bronx → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Ader, M.D.Bronx, NY 104631760477830
- Ava AnklesariaBronx, NY 104631467604447
- Jennifer Caceres, MDBronx, NY 104631851684054
- Amnon Gotian, M.D.Bronx, NY 104631841370871
- Isadore Gutwein, M.D.Bronx, NY 104631053306480
- Jeremy Gutwein, MD, MSBronx, NY 104631235279738
- Albert Kramer, M.D.Bronx, NY 104631386735033
- Trikante Rajapaksa, MDBronx, NY 104631770674293
Common questions
What is Ian G. Harnik, M.D.'s NPI number?
Ian G. Harnik, M.D.'s National Provider Identifier (NPI) is 1851506737, issued on May 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ian G. Harnik, M.D. located?
The NPPES record lists a practice address at 3333 Henry Hudson Pkwy, Bronx, NY, 10463. Phone: (718) 796-1000. Providers update this record themselves, so call before visiting.
How can I verify Ian G. Harnik, M.D.'s license?
NPPES lists New York license number 239608, 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 Ian G. Harnik, M.D. prescribe under Medicare Part D?
In 2024, Ian G. Harnik, M.D. had 752 Medicare Part D claims for 218 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.