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

In-Hei Hahn, MD

Individual provider Emergency Medicine Physician · NPI 1962575647

In-Hei Hahn, MD practises Emergency Medicine in Stanford, California. Graduated from University of Maryland School of Medicine in 1995, 31 years ago. Practices with Stanford Health Care, a 3,085-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California, New Jersey and New York.

Years since qualifying
31
Trained at
University of Maryland School of Medicine
Licensed in
CA, NJ, NY
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

300 Pasteur Dr
Stanford, CA 94305-2200
Phone: (650) 723-4000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1000 Tenth Avenue, Rm Ge-01, New York, NY 10019 — (212) 523-6745

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence C154183 (CA)
Medical Toxicology (Emergency Medicine) Physician Taxonomy 207PT0002X · Licence 210546 (NY)
Medical Toxicology (Emergency Medicine) Physician Taxonomy 207PT0002X · Licence C154183 (CA)
Physician Assistant Taxonomy 363A00000X · Licence 25MA09628000 (NJ)

Record details

NPI number1962575647
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 17, 2006
Last updated in NPPESMarch 22, 2024
Certification dateMarch 22, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1995 (31 years in practice)
Group practice Stanford Health Care — 3085 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 patients157
Services billed 178 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Stanford Health Care

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3085 clinicians in the practice; 12 are shown here.

Other providers in Stanford