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Internal Medicine

Stephanie M. Harman, MD

Works at hospitals in Stanford, CA · California

Summary

Dr. Stephanie M. Harman, MD is an internal medicine doctor at 300 Pasteur Dr, Stanford, CA 94305. Phone: (650) 723-4000. Accepts Medicare assignment. In 2024, Stephanie M. Harman had 35 Original Medicare patients and 59 services. NPI 1528112190. 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: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 300 Pasteur Dr, Stanford, CA 94305 · Directions
  • Phone: (650) 723‑4000
  • Medicare: Accepts Medicare assignment
  • Hospital: Stanford Health Care
  • Group practice: Stanford Health Care
  • Medical school: Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University · graduated 2003 (23 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Stephanie M. Harman, 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 Stephanie M. Harman accept Medicare assignment?
Yes. Medicare's clinician data says Stephanie M. Harman 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 Stephanie M. Harman see?
In 2024, CMS data shows 35 Original Medicare patients and 59 services for Stephanie M. Harman. This counts Original Medicare only and measures volume, not quality.
What is Stephanie M. Harman's NPI number?
1528112190. 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 Stephanie M. Harman, 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 patients35
Services billed to Medicare59
Different services or procedures6
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)20 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)16 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)11 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 pressure74%
  • High cholesterol63%
  • Depression57%
  • Anxiety57%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)49%
  • Diabetes37%

Hospitals where Stephanie M. Harman works

Medicare's Facility Affiliation Data lists Stephanie M. Harman 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.

  • Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

Addresses where Stephanie M. Harman is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Stephanie M. Harman as a member of this group (CMS data updated October 2, 2026).

  • Stanford Health Care3,122 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Stanford

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

All internal medicine doctors in Stanford →

Other clinicians in Stanford Health Care

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

Clinician information

CredentialMD
Medical schoolClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University
Graduation year2003 (23 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528112190
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