Marissa D. Toma, MD

Medicare activity in 2024

Official CMS public-use data for Marissa D. Toma, 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. Ultrasonic guidance for blood vessel access (76937)118 services
2. Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)105 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)92 services
4. Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (36902)77 services
5. Complete ultrasound of artery and vein blood flow pre-op assessment on both sides of body for hemodialysis access (93985)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 blood pressure75%
• High cholesterol75%
• Chronic kidney disease75%
• Diabetes72%
• Heart failure55%
• Ischemic heart disease43%

Hospitals where Marissa D. Toma works

Medicare's Facility Affiliation Data lists Marissa D. Toma 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.

• Doctors Hospital of MantecaManteca, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050118

Practice locations

Addresses where Marissa D. Toma is enrolled with Medicare (CMS data updated October 2, 2026).

• 145 Trevino AveManteca, CA 95337 (209) 788‑8180

Group practices

Medicare enrollment lists Marissa D. Toma as a member of this group (CMS data updated October 2, 2026).

• Pinnacle Sjir3 clinicians in the group

Specialties

• Vascular Surgeryprimary

Find other Vascular Surgery doctors in California →

Other vascular surgeons in California

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

• Carney Chan, MD
• Antonio J. Covarrubias, MD
• Sadia Ilyas, MD
• Vardan Papoian, MD
• Jesus Jimenez, MD
• Ariela Rumeld, MD
• Agustin Borjon, MD
• Kenneth R. Ziegler, MD

All vascular surgeons in California →

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