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Internal Medicine

Sheila H. Humphries, MD

Works at hospitals in Mountain View, CA · California

Summary

Dr. Sheila H. Humphries, MD is an internal medicine doctor at 2204 Grant Rd, Suite 104, Mountain View, CA 94040. Phone: (650) 396-3250. Accepts Medicare assignment. In 2024, Sheila H. Humphries had 392 Original Medicare patients and 2,021 services. NPI 1669503082. 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: 2204 Grant Rd, Suite 104, Mountain View, CA 94040 · Directions (1 more location)
  • Phone: (650) 396‑3250
  • Medicare: Accepts Medicare assignment
  • Hospital: El Camino Health
  • Medical school: Stanford University School Of Medicine · graduated 1991 (35 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Sheila H. Humphries, 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 Sheila H. Humphries accept Medicare assignment?
Yes. Medicare's clinician data says Sheila H. Humphries 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 Sheila H. Humphries see?
In 2024, CMS data shows 392 Original Medicare patients and 2,021 services for Sheila H. Humphries. This counts Original Medicare only and measures volume, not quality.
What is Sheila H. Humphries's NPI number?
1669503082. 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 Sheila H. Humphries, 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 patients392
Services billed to Medicare2,021
Different services or procedures24
Participating Medicare providerYes
Average age of these patients82

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)817 services
  2. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)242 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)131 services
  4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)110 services
  5. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)110 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%
  • Arthritis45%
  • Osteoporosis42%
  • Diabetes29%
  • Alzheimer's disease or dementia28%

Hospitals where Sheila H. Humphries works

Medicare's Facility Affiliation Data lists Sheila H. Humphries 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.

  • El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308

Practice locations

Addresses where Sheila H. Humphries is enrolled with Medicare (CMS data updated October 2, 2026).

  • 2204 Grant Rd, Suite 104Mountain View, CA 94040 (650) 396‑3250
  • 811 Altos Oaks Dr, Suite 2Los Altos, CA 94024

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Mountain View

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

All internal medicine doctors in Mountain View →

Clinician information

CredentialMD
Medical schoolStanford University School Of Medicine
Graduation year1991 (35 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1669503082
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