Elizabeth C. Treynor, MD

Medicare activity in 2024

Official CMS public-use data for Elizabeth C. Treynor, 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. Pathology examination of tissue using a microscope, intermediate complexity (88305)657 services
2. Special stained specimen slides to examine tissue, each additional procedure (88341)234 services
3. Special stained specimen slides to examine tissue, initial procedure (88342)200 services
4. Microscopic genetic analysis of tumor, manual (88360)122 services
5. Pathology examination of tissue using a microscope, moderately high complexity (88307)113 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%
• Diabetes49%
• Arthritis49%
• Ischemic heart disease39%
• Chronic kidney disease39%

Hospitals where Elizabeth C. Treynor works

Medicare's Facility Affiliation Data lists Elizabeth C. Treynor 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.

• St Rose HospitalHayward, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: not listed by Medicare · CCN 050002
• Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
• Washington HospitalFremont, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050195

Practice locations

Addresses where Elizabeth C. Treynor is enrolled with Medicare (CMS data updated October 2, 2026).

• 2000 Mowry AveFremont, CA 94538 (810) 797‑1111

Group practices

Medicare enrollment lists Elizabeth C. Treynor as a member of this group (CMS data updated October 2, 2026).

• Western Laboratories8 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in California →

Other pathologists in Fremont

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

• Sai Priyanka Gudiwada, MD
• Claude O. Burdick, MD
• David Levin, MD
• Alana F. Shain, MD
• Jessie Xiong, MD
• Elise M. Rosen-Levin, MD
• Esha Gollapalle, MD
• Mansooreh Eghtesad, MD

All pathologists in Fremont →

Other clinicians in Western Laboratories

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

• Sai Priyanka Gudiwada, MD
• Claude O. Burdick, MD
• David Levin, MD
• Jessie Xiong, MD
• Elise M. Rosen-Levin, 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