1. Home
  2. Directory
  3. California
  4. Laguna Hills
  5. Pathology
  6. NPI Profile

THOMAS G HIROSE MD APC
NPI 1275622748
Pathology - Anatomic Pathology & Clinical Pathology in Laguna Hills, CA

Active since October 12, 2006
24407 CALLE DE LA LOUISA STE 100, LAGUNA HILLS, CA 92653(310) 373-5700(949) 581-7555 Get Directions Write a Review

NPPES record last updated: August 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Thomas G Hirose Md Apc NPPES

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

THOMAS G HIROSE MD APC (NPI 1275622748), doing business as Transfusion Medicine Associates, is a healthcare organization registered as an anatomic pathology & clinical pathology in Laguna Hills, California and active in the NPI registry since October 2006. The organization lists Sandra Cramer, Practice Manager, as its authorized official.

NPPES Registry Identity

NPI1275622748
Entity TypeOrganization
Primary Taxonomy207ZP0102X
Legal Business NameTHOMAS G HIROSE MD APC
Location Address24407 CALLE DE LA LOUISA STE 100Laguna Hills, CA 92653-3650
Mailing Address24407 Calle De La Louisa Ste 100Laguna Hills, CA 92653-3650 · (310) 373-5700 · Fax (949) 581-7555
Phone(310) 373-5700
Fax(949) 581-7555
Organization SubpartNo
Authorized OfficialSandra CramerPractice Manager · (949) 581-0555
Enumeration DateOctober 12, 2006
Last NPPES UpdateAugust 7, 2026
NPPES CertifiedAugust 7, 2026
✔ NPI 1275622748 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedPathology · Blood Banking & Transfusion MedicineTaxonomy 207ZB0001X
24407 CALLE DE LA LOUISA STE 100, Laguna Hills, CA 92653
Open in Google Maps ↗

Other Names 1

Doing Business AsTransfusion Medicine Associates

Other Identifiers 1

Medicaid00G666760CA

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 MULTIPLE 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)

Thomas G Hirose Md Apc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Thomas G Hirose MD Apc, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Thomas Hirose, M.D.
Pathology
NPI 1114960861
24407 CALLE DE LA LOUISA STE 100
Laguna Hills, CA 92653
(949) 581-0555
✔ PECOS✔ Accepts MedicareSame address
Rubio Punzalan, M.D.
Pathology
NPI 1093937708
1241 ENCINO DR
San Marino, CA 91108
(626) 201-9893
✔ PECOS43 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 Thomas G Hirose MD Apc's NPI number?

The NPI number for Thomas G Hirose MD Apc is 1275622748. It was assigned to this organization in the NPPES registry on October 12, 2006. The provider is doing business as Transfusion Medicine Associates.

Where is Thomas G Hirose MD Apc located?

Thomas G Hirose MD Apc is located at 24407 Calle De La Louisa Ste 100, Laguna Hills, CA 92653. The listed phone number is (310) 373-5700.

What is Thomas G Hirose MD Apc's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Thomas G Hirose MD Apc enrolled in Medicare?

Yes. Thomas G Hirose MD Apc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Thomas G Hirose MD Apc?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Pathology, reassign their Medicare billing to Thomas G Hirose MD Apc. 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. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Thomas G Hirose MD Apc was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.