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Obstetrics/Gynecology

Elizabeth R. Brown, DO

Works at hospitals in Greenbrae, CA · Novato, CA · California

Summary

Dr. Elizabeth R. Brown, DO is an OB-GYN at 505 Parnassus Ave, San Francisco, CA 94143. Phone: (415) 476-1000. May accept Medicare assignment. In 2024, Elizabeth R. Brown had 110 Original Medicare patients and 197 services. NPI 1215281019. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Elizabeth R. Brown, 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 Elizabeth R. Brown accept Medicare assignment?
Medicare's clinician data says Elizabeth R. Brown may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Elizabeth R. Brown see?
In 2024, CMS data shows 110 Original Medicare patients and 197 services for Elizabeth R. Brown. This counts Original Medicare only and measures volume, not quality.
What is Elizabeth R. Brown's NPI number?
1215281019. 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 Elizabeth R. Brown, 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 patients110
Services billed to Medicare197
Different services or procedures19
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)64 services
  2. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)58 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)15 services
  4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)12 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%
  • Arthritis43%
  • High blood pressure37%
  • Osteoporosis35%
  • Anxiety20%
  • Depression15%

Hospitals where Elizabeth R. Brown works

Medicare's Facility Affiliation Data lists Elizabeth R. Brown 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.

  • Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050360
  • Novato Community HospitalNovato, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050131

Practice locations

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

Group practices

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

  • Regents Univ of California UCSF283 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in California →

Other OB-GYNs in San Francisco

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

All OB-GYNs in San Francisco →

Other clinicians in Regents Univ of California UCSF

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

Clinician information

CredentialDO
Medical schoolWest Virginia School Of Osteopathic Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1215281019
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