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Pathology

Cynthia A. Gasper, MD

Works at hospitals in San Francisco, CA · California

Summary

Dr. Cynthia A. Gasper, MD is a pathologist at 2330 Post St, San Francisco, CA 94115. Phone: (415) 476-4029. Accepts Medicare assignment. In 2024, Cynthia A. Gasper had 183 Original Medicare patients and 728 services. NPI 1558697946. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Pathologist (Medicare lists Pathology)
  • Address: 2330 Post St, San Francisco, CA 94115 · Directions
  • Phone: (415) 476‑4029
  • Medicare: Accepts Medicare assignment
  • Hospital: UCSF Medical Center
  • Group practice: University of California San Francisco
  • Medical school: University Of California, San Francisco School Of Medicine · graduated 2009 (17 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Cynthia A. Gasper, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Cynthia A. Gasper accept Medicare assignment?
Yes. Medicare's clinician data says Cynthia A. Gasper accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Cynthia A. Gasper see?
In 2024, CMS data shows 183 Original Medicare patients and 728 services for Cynthia A. Gasper. This counts Original Medicare only and measures volume, not quality.
What is Cynthia A. Gasper's NPI number?
1558697946. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Cynthia A. Gasper, 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.

Original Medicare patients183
Services billed to Medicare728
Different services or procedures18
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Special stained specimen slides to examine tissue, each additional procedure (88341)241 services
  2. Pathology examination of tissue using a microscope, intermediate complexity (88305)134 services
  3. Special stained specimen slides to examine tissue, initial procedure (88342)88 services
  4. Pathology examination of tissue using a microscope, moderately high complexity (88307)82 services
  5. Surgical pathology consultation and report on referred slides prepared elsewhere (88321)49 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 cholesterol68%
  • High blood pressure66%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)57%
  • Arthritis40%
  • Diabetes32%
  • Anxiety31%

Hospitals where Cynthia A. Gasper works

Medicare's Facility Affiliation Data lists Cynthia A. Gasper 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.

Practice locations

Addresses where Cynthia A. Gasper is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Cynthia A. Gasper as a member of this group (CMS data updated October 2, 2026).

  • University of California San Francisco1,839 clinicians in the group

Specialties

Find other Pathology doctors in California →

Other pathologists in San Francisco

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

All pathologists in San Francisco →

Other clinicians in University of California San Francisco

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

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Francisco School Of Medicine
Graduation year2009 (17 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1558697946
CorrectionsReport an error or suggest an update →

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