Ian Harnik, M.D.
NPI 1851506737 · Gastroenterology Physician · Bronx, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Harnik, M.D. is a Gastroenterology Physician provider in Bronx, NY (NPI 1851506737).
Provider details
- NPI number
- 1851506737
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 239608 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
187 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 47 | $146 |
| Measurement of Hydrogen in Breath to Test for Stomach and Bowel Symptoms91065 | 23 | $87 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $104 |
| Diagnostic Exam of Anus Using an Endoscope46600 | 20 | $139 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 20 | $191 |
| Stool Analysis for Blood to Screen for Colon Tumors82270 | 19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 157 | 53 |
| Linaclotidebrand: Linzess | 130 | 29 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 68 | 66 |
| Famotidine | 28 | 11 |
| Loperamide Hclbrand: Loperamide | 23 | — |
| Metoclopramide Hcl | 23 | 11 |
| Ustekinumabbrand: Stelara | 22 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$503 across 47 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-13
- Last updated
- 2016-08-24
Frequently asked questions
- What is Ian Harnik's NPI number?
- Ian Harnik's National Provider Identifier (NPI) is 1851506737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Harnik's specialty?
- Ian Harnik is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Harnik located?
- Ian Harnik's practice location on file with NPPES is 3333 Henry Hudson Pkwy, Bronx, NY 10463-3224.
- What is Ian Harnik's phone number?
- The practice phone number listed in the NPPES registry for Ian Harnik is (718) 796-1000.
- Does Ian Harnik accept Medicare?
- Ian Harnik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Harnik's NPI active?
- Yes — Ian Harnik's NPI (1851506737) is active in the NPPES registry as of the last update on 2016-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.