HARRISON HASANUDDIN, D.O., INC.
NPI 1386323038
Family Medicine - Sleep Medicine in Monterey Park, CA

Q: What is Harrison Hasanuddin, D.O., Inc.'s NPI number?

The NPI number for Harrison Hasanuddin, D.O., Inc. is 1386323038. It was assigned to this organization in the NPPES registry on July 11, 2023.

Q: What is Harrison Hasanuddin, D.O., Inc.'s specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Sleep Medicine, with taxonomy code 207QS1201X.

Active since July 11, 2023CLIA 05D2322079 · Waiver

420 N GARFIELD AVE STE 203, MONTEREY PARK, CA 91754(626) 763-1899(626) 547-4438 Get Directions Write a Review

NPPES record last updated: June 22, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 22, 2025, Nov 5, 2024, Jul 11, 2023 (3 updates tracked since 2023).

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About Harrison Hasanuddin, D.o., Inc. NPPES

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

HARRISON HASANUDDIN, D.O., INC. (NPI 1386323038) is a healthcare organization registered as a sleep medicine in Monterey Park, California and active in the NPI registry since July 2023. The organization holds a CLIA Waiver certificate valid through April 14, 2027 and lists Harrison Hasanuddin, President, as its authorized official.

NPPES Registry Identity

NPI1386323038

Entity TypeOrganization

Primary Taxonomy207QS1201X

Legal Business NameHARRISON HASANUDDIN, D.O., INC.

Location Address420 N GARFIELD AVE STE 203Monterey Park, CA 91754-1206

Mailing Address420 N Garfield Ave Ste 203Monterey Park, CA 91754-1206 · (626) 763-1899 · Fax (626) 547-4438

Phone(626) 763-1899

Fax(626) 547-4438

Organization SubpartNo

Authorized OfficialHarrison HasanuddinPresident · (626) 763-1899

Enumeration DateJuly 11, 2023

Last NPPES UpdateJune 22, 20253 updates tracked since enumeration

NPPES CertifiedJune 22, 2025

✔ NPI 1386323038 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyFamily Medicine · Sleep MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207QS1201X

Definition

A Family Medicine Physician who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Also ListedFamily MedicineTaxonomy 207Q00000X

Also ListedFamily Medicine · Obesity MedicineTaxonomy 207QB0002X

420 N GARFIELD AVE STE 203, Monterey Park, CA 91754

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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)

Harrison Hasanuddin, D.o., 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 Harrison Hasanuddin, D.O., Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Harrison Hasanuddin, D.O.

Family Practice

NPI 1790165785

420 N GARFIELD AVE STE 203
Monterey Park, CA 91754

(626) 763-1899

✔ 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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2322079

Harrison Hasanuddin, D O, Inc · Monterey Park, CA

Active · expires Apr 14, 2027

CLIA Number05D2322079

Laboratory TypePhysician Office

Certificate Effective DateApril 15, 2025

Certificate Expiration DateApril 14, 2027

Laboratory DirectorHarrison Hasanuddin

Laboratory Phone(626) 763-1899

Laboratory LocationHarrison Hasanuddin, D O, Inc420 North Garfield Avenue, Suite 203, Monterey Park, Ca 9, Monterey Park, CA 91754

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Harrison Hasanuddin, D.O., Inc.'s NPI number?

The NPI number for Harrison Hasanuddin, D.O., Inc. is 1386323038. It was assigned to this organization in the NPPES registry on July 11, 2023.

Where is Harrison Hasanuddin, D.O., Inc. located?

Harrison Hasanuddin, D.O., Inc. is located at 420 N Garfield Ave Ste 203, Monterey Park, CA 91754. The listed phone number is (626) 763-1899.

What is Harrison Hasanuddin, D.O., Inc.'s specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Sleep Medicine, with taxonomy code 207QS1201X.

Is Harrison Hasanuddin, D.O., Inc. enrolled in Medicare?

Yes. Harrison Hasanuddin, D.O., Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Harrison Hasanuddin, D.O., Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Harrison Hasanuddin, D.O., 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.

Does Harrison Hasanuddin, D.O., Inc. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2322079) is associated with this NPI, valid through April 14, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Harrison Hasanuddin, D.O., Inc. was last updated on June 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.