Gautam Prasad, MD

Medicare activity in 2024

Official CMS public-use data for Gautam Prasad, 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. Injection, gadobutrol, 0.1 ml (A9585)5,375 services
2. Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)1,950 services
3. Calculation of radiation therapy dose (77300)935 services
4. Design and construction of complex radiation treatment device (77334)539 services
5. Ct guidance for insertion of radiation therapy fields (77014)428 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 pressure74%
• High cholesterol74%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)70%
• Arthritis32%
• Diabetes31%
• Ischemic heart disease25%

Hospitals where Gautam Prasad works

Medicare's Facility Affiliation Data lists Gautam Prasad 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
• Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050523

Practice locations

Addresses where Gautam Prasad is enrolled with Medicare (CMS data updated October 2, 2026).

• 3003 Oak Rd, Suite 104Walnut Creek, CA 94597 (925) 391‑2221

Group practices

Medicare enrollment lists Gautam Prasad as a member of this group (CMS data updated October 2, 2026).

• Epic Care55 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in California →

Other radiation oncologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

• Ashish H. Jani, MD
• Nicholas J. Giacalone, MD
• Austin B. Hopper, MD
• Garth A. Green, MD
• Aimee L. Quan, MD
• Samantha A. Seaward, MD
• Mark K. Buyyounouski, MD
• Karen Cheng, MD

All radiation oncologists in California →

Other clinicians in Epic Care

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

• Bimal T. Patel, MD
• Sara J. Reinganum, MD
• Neha A. Desouza, MD
• Margaret Seaver
• Shelly Gupta, MD
• Jane H. Wardzinska, 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