Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Sarah Gmach, MD, MPH

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1285924621

Sarah Gmach, MD, MPH practises Internal Medicine in San Jose, California. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2011, 15 years ago. Practices with County of Santa Clara, a 993-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
15
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
CA
In the registry since
2011
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

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Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

San Jose, CA

No coordinates on file. Search this address in Google Maps

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A126225 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1285924621
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , MPH
Sole proprietorYes
NPI enumeratedApril 18, 2011
Last updated in NPPESJanuary 23, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 2011 (15 years in practice)
Group practice County Of Santa Clara — 993 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients128
Services billed 194 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at County of Santa Clara

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 993 clinicians in the practice; 12 are shown here.

Other providers in San Jose