Ari M. Grinspan, MD

Medicare activity in 2024

Official CMS public-use data for Ari M. Grinspan, 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.

Most frequent services

1. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)142 services
2. Biopsy of large bowel using a flexible endoscope (45380)86 services
3. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)64 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)59 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)54 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 pressure71%
• Arthritis52%
• Ischemic heart disease39%
• Diabetes36%
• Anxiety34%

Hospitals where Ari M. Grinspan works

Medicare's Facility Affiliation Data lists Ari M. Grinspan 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.

• Mount Sinai HospitalNew York, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330024

Practice locations

Addresses where Ari M. Grinspan is enrolled with Medicare (CMS data updated October 2, 2026).

• 2510 30th AveAstoria, NY 11102 (718) 932‑1000

Group practices

Medicare enrollment lists Ari M. Grinspan as a member of this group (CMS data updated October 2, 2026).

• Icahn School of Medicine at Mount Sinai2,843 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in New York →

Other gastroenterologists in Astoria

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

• Deborah L. Chua, MD
• Julie A. Foont, MD
• Barry Obadiah, MD
• Neal Joseph, MD
• Anthony S. Borcich, MD
• Veronika Dubrovskaya, MD
• James A. Kim, MD
• Peter S. Kim, MD

All gastroenterologists in Astoria →

Other clinicians in Icahn School of Medicine at Mount Sinai

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

• Leana J. Shugol, DO
• Fernando Carnavali, MD
• Helena Schotland, MD
• Saadi Ghatan, MD
• Joshua McHugh, MD
• Johanna J. Monro, CNM

Clinician information

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