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Gastroenterology

Jacob S. Walfish, MD

Works at hospitals in New York, NY · New York

Summary

Dr. Jacob S. Walfish, MD is a gastroenterologist at 111 Broadway, New York, NY 10006. Phone: (212) 263-9700. Accepts Medicare assignment. In 2024, Jacob S. Walfish had 265 Original Medicare patients and 1,600 services. NPI 1194763011. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 111 Broadway, New York, NY 10006 · Directions (2 more locations)
  • Phone: (212) 263‑9700
  • Medicare: Accepts Medicare assignment
  • Hospital: NYU Langone Hospitals
  • Group practice: New York University
  • Medical school: Harvard Medical School · graduated 1974 (52 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Jacob S. Walfish, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Jacob S. Walfish accept Medicare assignment?
Yes. Medicare's clinician data says Jacob S. Walfish accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Jacob S. Walfish see?
In 2024, CMS data shows 265 Original Medicare patients and 1,600 services for Jacob S. Walfish. This counts Original Medicare only and measures volume, not quality.
What is Jacob S. Walfish's NPI number?
1194763011. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Jacob S. Walfish, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients265
Services billed to Medicare1,600
Different services or procedures29
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Insertion of needle into vein for collection of blood sample (36415)438 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)270 services
  3. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)188 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)162 services
  5. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)92 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure65%
  • Arthritis53%
  • Ischemic heart disease34%
  • Diabetes33%
  • Osteoporosis21%

Hospitals where Jacob S. Walfish works

Medicare's Facility Affiliation Data lists Jacob S. Walfish at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • NYU Langone HospitalsNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330214

Practice locations

Addresses where Jacob S. Walfish is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jacob S. Walfish as a member of this group (CMS data updated October 2, 2026).

  • New York University6,134 clinicians in the group

Specialties

Find other Gastroenterology doctors in New York →

Other gastroenterologists in New York

Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.

All gastroenterologists in New York →

Other clinicians in New York University

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolHarvard Medical School
Graduation year1974 (52 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1194763011
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians