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STEFAN A UNTERHALTER MD A MEDICAL CORP
NPI 1437285269
Internal Medicine - Nephrology in Beverly Hills, CA

Active since February 26, 2007
9001 WILSHIRE BLVD STE 201, BEVERLY HILLS, CA 90211(310) 274-2722(310) 275-1082 Get Directions Write a Review

NPPES record last updated: February 17, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Stefan A Unterhalter Md A Medical Corp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEFAN A UNTERHALTER MD A MEDICAL CORP (NPI 1437285269) is a healthcare organization registered as a nephrology in Beverly Hills, California and active in the NPI registry since February 2007. The organization lists Stefan Andrew Unterhalter, President, as its authorized official.

NPPES Registry Identity

NPI1437285269
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameSTEFAN A UNTERHALTER MD A MEDICAL CORP
Location Address9001 WILSHIRE BLVD STE 201Beverly Hills, CA 90211-1840
Mailing Address9001 Wilshire Blvd Ste 201Beverly Hills, CA 90211-1840 · (310) 274-2722 · Fax (310) 275-1082
Phone(310) 274-2722
Fax(310) 275-1082
Organization SubpartNo
Authorized OfficialStefan Andrew UnterhalterPresident · (310) 274-2722
Enumeration DateFebruary 26, 2007
Last NPPES UpdateFebruary 17, 2026
NPPES CertifiedFebruary 17, 2026
✔ NPI 1437285269 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in CA · A33152
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
9001 WILSHIRE BLVD STE 201, Beverly Hills, CA 90211
Open in Google Maps ↗

Other Identifiers 2

Other110011556Medicare Railroad
Medicaid00A331520CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stefan A Unterhalter Md A Medical Corp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Stefan A Unterhalter MD A Medical Corp, which bills Medicare for the services this clinician delivers.

Clinician (1)

Stefan Unterhalter, M.D.
Nephrology
NPI 1619023249
9001 WILSHIRE BLVD SUITE 201
Beverly Hills, CA 90211
(310) 274-2722
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Stefan A Unterhalter MD A Medical Corp's NPI number?

The NPI number for Stefan A Unterhalter MD A Medical Corp is 1437285269. It was assigned to this organization in the NPPES registry on February 26, 2007.

Where is Stefan A Unterhalter MD A Medical Corp located?

Stefan A Unterhalter MD A Medical Corp is located at 9001 Wilshire Blvd Ste 201, Beverly Hills, CA 90211. The listed phone number is (310) 274-2722.

What is Stefan A Unterhalter MD A Medical Corp's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Stefan A Unterhalter MD A Medical Corp enrolled in Medicare?

Yes. Stefan A Unterhalter MD A Medical Corp is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Stefan A Unterhalter MD A Medical Corp?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nephrology) reassigns their Medicare billing to Stefan A Unterhalter MD A Medical Corp. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Stefan A Unterhalter MD A Medical Corp was last updated on February 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.