Shivi S. Siva, MD

Medicare activity in 2024

Official CMS public-use data for Shivi S. Siva, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)27 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)21 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)21 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)16 services
5. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)11 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 blood pressure75%
• High cholesterol75%
• Arthritis54%
• Diabetes51%
• Ischemic heart disease41%
• Heart failure37%

Hospitals where Shivi S. Siva works

Medicare's Facility Affiliation Data lists Shivi S. Siva 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.

• Montefiore New Rochelle HospitalNew Rochelle, NY · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 330184

Practice locations

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

• 16 Guion PlNew Rochelle, NY 10801 (914) 365‑4065

Group practices

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

• Montefiore New Rochelle Hospital62 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in New York →

Other gastroenterologists in New Rochelle

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

• Parvathi A. Myer, MD
• Seth Cohen, MD
• Nathan S. Rosenfeld, MD
• Andrew P. Francella, MD
• Ari L. Bunim, MD
• Mark R. Liss, MD

All gastroenterologists in New Rochelle →

Other clinicians in Montefiore New Rochelle Hospital

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

• Michael Mandel, MD
• Robert Taglia, MD
• Justin Joy, PA
• Vincenzo A. Cirillo, MD
• Thomas S. Rabadi
• Linda P. Williams, 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