ALLIANCE HOSPITALIST MEDICAL GROUP INC
NPI 1720187230
Hospitalist in Thousand Oaks, CA

Q: What is Alliance Hospitalist Medical Group Inc's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Active since September 21, 2006

215 W JANSS RD, THOUSAND OAKS, CA 91360(805) 497-1800 Get Directions Write a Review

NPPES record last updated: October 12, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Alliance Hospitalist Medical Group Inc NPPES

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

ALLIANCE HOSPITALIST MEDICAL GROUP INC (NPI 1720187230) is a healthcare organization registered as a hospitalist in Thousand Oaks, California and active in the NPI registry since September 2006. The organization lists Geoffrey Lee Graham, President, as its authorized official.

NPPES Registry Identity

NPI1720187230

Entity TypeOrganization

Primary Taxonomy208M00000X

Legal Business NameALLIANCE HOSPITALIST MEDICAL GROUP INC

Location Address215 W JANSS RDThousand Oaks, CA 91360-1847

Mailing Address1534 N Moorpark Rd # 291Thousand Oaks, CA 91360-5129 · (805) 497-1810 · Fax (805) 523-7339

Phone(805) 497-1800

Organization SubpartNo

Authorized OfficialGeoffrey Lee GrahamPresident · (805) 497-1810

Enumeration DateSeptember 21, 2006

Last NPPES UpdateOctober 12, 2017

✔ NPI 1720187230 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in CA · G39820

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License G39820 (CA)

215 W JANSS RD, Thousand Oaks, CA 91360

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Other Identifiers 1

Medicare ID-Type UnspecifiedW19220CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Alliance Hospitalist Medical Group Inc 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 Alliance Hospitalist Medical Group Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Geoffrey Graham, M.D.

Internal Medicine

NPI 1356343073

1534 N MOORPARK RD NO. 291
Thousand Oaks, CA 91360

(805) 497-1800

✔ PECOS1.0 mi

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 Alliance Hospitalist Medical Group Inc's NPI number?

The NPI number for Alliance Hospitalist Medical Group Inc is 1720187230. It was assigned to this organization in the NPPES registry on September 21, 2006.

Where is Alliance Hospitalist Medical Group Inc located?

Alliance Hospitalist Medical Group Inc is located at 215 W Janss Rd, Thousand Oaks, CA 91360. The listed phone number is (805) 497-1800.

What is Alliance Hospitalist Medical Group Inc's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Alliance Hospitalist Medical Group Inc enrolled in Medicare?

Yes. Alliance Hospitalist Medical Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Alliance Hospitalist Medical Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Alliance Hospitalist Medical Group Inc. 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 Alliance Hospitalist Medical Group Inc was last updated on October 12, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.