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Internal Medicine

Anita N. Demas, MD

Works at hospitals in San Francisco, CA · Greenbrae, CA · California

Summary

Dr. Anita N. Demas, MD is an internal medicine doctor at 2340 Clay St, San Francisco, CA 94115. Phone: (415) 674-5223. Accepts Medicare assignment. In 2024, Anita N. Demas had 337 Original Medicare patients and 11,639 services. NPI 1174646012. 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 Anita N. Demas, 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 Anita N. Demas accept Medicare assignment?
Yes. Medicare's clinician data says Anita N. Demas 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 Anita N. Demas see?
In 2024, CMS data shows 337 Original Medicare patients and 11,639 services for Anita N. Demas. This counts Original Medicare only and measures volume, not quality.
What is Anita N. Demas's NPI number?
1174646012. 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 Anita N. Demas, 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 patients337
Services billed to Medicare11,639
Different services or procedures72
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)1,862 services
  2. Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)1,197 services
  3. Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (99439)1,086 services
  4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)974 services
  5. Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (99454)925 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 cholesterol75%
  • High blood pressure71%
  • Arthritis36%
  • Depression25%
  • Anxiety24%
  • Osteoporosis24%

Hospitals where Anita N. Demas works

Medicare's Facility Affiliation Data lists Anita N. Demas 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 Anita N. Demas is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Anita N. Demas as a member of these groups (CMS data updated October 2, 2026).

  • Pacific Heights Medical Group4 clinicians in the group
  • MD Weight Management Inc2 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Francisco

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

All internal medicine doctors in San Francisco →

Other clinicians in Pacific Heights Medical Group

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 year1997 (29 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1174646012
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