Rishi K. Sharma, MD

Medicare activity in 2024

Official CMS public-use data for Rishi K. Sharma, 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 moderate level of decision making, if using time, 30 minutes or more (99214)521 services
2. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)265 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)227 services
4. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)214 services
5. Biopsy of large bowel using a flexible endoscope (45380)203 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 pressure67%
• Arthritis46%
• Ischemic heart disease24%
• Osteoporosis23%
• Anxiety21%

Hospitals where Rishi K. Sharma works

Medicare's Facility Affiliation Data lists Rishi K. Sharma 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.

• John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
• John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050180

Practice locations

Addresses where Rishi K. Sharma is enrolled with Medicare (CMS data updated October 2, 2026).

• 1505 Saint Alphonsus WayAlamo, CA 94507 (925) 932‑6330
• 2637 Shadelands DrWalnut Creek, CA 94598
• 365 Lennon LnWalnut Creek, CA 94598

Group practices

Medicare enrollment lists Rishi K. Sharma as a member of this group (CMS data updated October 2, 2026).

• Bass Medical Group291 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in California →

Other gastroenterologists in Alamo

Clinicians with the same Medicare primary specialty in Alamo, CA — not a recommendation.

• Mehra Hosseini, MD
• Subhendu Narayan, MD
• Kalyani Maganti, MD
• Cynthia Mullen, MD
• Huilan J. Cheng, MD
• Philip C. Yee, MD
• Lisa K. Higa, MD
• Jenny F. Jew, MD

All gastroenterologists in Alamo →

Other clinicians in Bass Medical Group

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

• Tarannum Guller, MD
• Mehra Hosseini, MD
• Chih Hsin C. Wen, MD
• Danielle Bertoni, MD
• Jennifer O. Chan, MD
• Szilvia Molitorisz, 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