IN-HEI HAHN MD
NPI 1962575647
Emergency Medicine in Stanford, CA
About In-hei Hahn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IN-HEI HAHN MD (NPI 1962575647) is an individual emergency medicine provider in Stanford, California, licensed in California (C154183) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of University Of Maryland School Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
In-hei Hahn Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
10Medicare enrollment records show In-hei Hahn reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Fairfield, CA 94533
- Reassigned Medicare billing, California enrollment
- 212 clinicians in this Medicare group
St George, UT 84770
- Reassigned Medicare billing, Utah enrollment
- 1,729 clinicians in this Medicare group
Winter Haven, FL 33881
- Reassigned Medicare billing, Florida enrollment
- 1,065 clinicians in this Medicare group
Utica, NY 13502
- Reassigned Medicare billing, New York enrollment
- 657 clinicians in this Medicare group
Poughkeepsie, NY 12601
- Reassigned Medicare billing, New York enrollment
- 356 clinicians in this Medicare group
Boynton Beach, FL 33426
- Reassigned Medicare billing, New York enrollment
- 7,712 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 1,067 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is In-hei Hahn's NPI number?
The NPI number for In-hei Hahn is 1962575647. It was assigned to this individual provider in the NPPES registry on November 17, 2006.
Where is In-hei Hahn located?
In-hei Hahn practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is In-hei Hahn's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is In-hei Hahn enrolled in Medicare?
Yes. In-hei Hahn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for In-hei Hahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), In-hei Hahn reassigns Medicare benefits to 10 organizations: Stanford Health Care (Stanford, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA), County Of Santa Clara (Palo Alto, CA), Solano Gateway Medical Group Inc (Fairfield, CA), Ihc Health Services Inc (St George, UT) and 5 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for In-hei Hahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for In-hei Hahn was last updated on March 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# In-Hei Hahn, MD · NPI 1962575647
Emergency Medicine physician in Stanford, California. Individual provider, active in the CMS NPPES registry since November 17, 2006.
## Identity
- **NPI:** 1962575647 (Entity type: Individual)
- **Enumerated:** November 17, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** C154183 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); County Of Santa Clara (NPI 1144330614, Palo Alto, CA); Solano Gateway Medical Group Inc (NPI 1952344293, Fairfield, CA); Ihc Health Services Inc (NPI 1851599336, St George, UT); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 1995
## Record status
- **NPPES last updated:** March 22, 2024
- **Other identifiers:** Medicaid 01884362 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1962575647) · Data from the CMS NPPES public registry.