Jason R. Penzer, MD

Medicare activity in 2024

Official CMS public-use data for Jason R. Penzer, 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 low level od decision making, if using time, 20 minutes or more (99213)94 services
2. Diagnostic exam of anus using an endoscope (46600)83 services
3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)26 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)23 services
5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)19 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%
• Arthritis53%
• Ischemic heart disease29%
• Anxiety29%
• Diabetes28%

Hospitals where Jason R. Penzer works

Medicare's Facility Affiliation Data lists Jason R. Penzer 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.

• Lenox Hill HospitalNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330119

Practice locations

Addresses where Jason R. Penzer is enrolled with Medicare (CMS data updated October 2, 2026).

• 515 Madison Ave, Rm 705New York, NY 10022 (212) 675‑2997

Group practices

Medicare enrollment lists Jason R. Penzer as a member of this group (CMS data updated October 2, 2026).

• Manhattan Colorectal Surgeons LLC2 clinicians in the group

Specialties

• Colorectal Surgery (Proctology)primary

Find other Colorectal Surgery (Proctology) doctors in New York →

Other colorectal surgeons in New York

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

• Isabelle C. Le Leannec, MD
• Bashar Safar, MD
• Julio Garcia-Aguilar, MD
• Chady Atallah
• Varun Krishnan, MD
• Michael Silverman
• Toyooki Sonoda, MD
• Emily L. Chan, MD

All colorectal surgeons in New York →

Other clinicians in Manhattan Colorectal Surgeons LLC

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

• Parswa Ansari, MD

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