Ahmed Z. Zaafran, MD

Medicare activity in 2024

Official CMS public-use data for Ahmed Z. Zaafran, 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 of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)32 services
2. Anesthesia for procedure for total knee joint replacement (01402)30 services
3. Anesthesia for total hip replacement (01214)27 services
4. Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)13 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%
• Arthritis75%
• Ischemic heart disease38%
• Diabetes35%
• Chronic kidney disease27%

Hospitals where Ahmed Z. Zaafran works

Medicare's Facility Affiliation Data lists Ahmed Z. Zaafran 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.

• Washington HospitalFremont, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050195

Practice locations

Addresses where Ahmed Z. Zaafran is enrolled with Medicare (CMS data updated October 2, 2026).

• 2000 Mowry AveFremont, CA 94538 (510) 797‑1111

Group practices

Medicare enrollment lists Ahmed Z. Zaafran as a member of this group (CMS data updated October 2, 2026).

• Cep America - Anesthesia PC849 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in California →

Other anesthesiologists in Fremont

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

• Kristopher V. Kuhl, DO
• Abhishek Saluja
• Mark E. Kenter, MD
• Judy Chang, MD
• Mir E. Ali, MD
• Amanda Chan, DO
• Pooya Jazayeri, MD
• Alexander Betz, MD

All anesthesiologists in Fremont →

Other clinicians in Cep America - Anesthesia PC

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

• Nicholas K. Schiller, MD
• Garrett R. Speyer
• Gerard J. Hoatam, MD
• Kristopher V. Kuhl, DO
• Kenneth A. Jongsma, DO
• Laura S. Graybeal, 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