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MARIA SUSAN BUHAY-MAGLUNOG MD INC
NPI 1003081209
Internal Medicine - Rheumatology in West Covina, CA

Active since April 28, 2008
1250 S SUNSET AVE, SUITE 201, WEST COVINA, CA 91790(626) 962-3254(962) 962-1266 Get Directions Write a Review

NPPES record last updated: February 3, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Maria Susan Buhay-maglunog Md Inc NPPES

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

MARIA SUSAN BUHAY-MAGLUNOG MD INC (NPI 1003081209) is a healthcare organization registered as a rheumatology in West Covina, California and active in the NPI registry since April 2008. The organization lists Maria Susan Afable Buhay-maglunog, President, as its authorized official.

NPPES Registry Identity

NPI1003081209
Entity TypeOrganization
Primary Taxonomy207RR0500X
Legal Business NameMARIA SUSAN BUHAY-MAGLUNOG MD INC
Location Address1250 S SUNSET AVE, SUITE 201West Covina, CA 91790-3961
Mailing Address1250 S Sunset Ave, Suite 201West Covina, CA 91790-3961 · (626) 962-3254 · Fax (962) 962-1266
Phone(626) 962-3254
Fax(962) 962-1266
Organization SubpartNo
Authorized OfficialMaria Susan Afable Buhay-maglunogPresident · (626) 962-3254
Enumeration DateApril 28, 2008
Last NPPES UpdateFebruary 3, 2009
✔ NPI 1003081209 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · A42390
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
1250 S SUNSET AVE, West Covina, CA 91790
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINC46234CA

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Maria Susan Buhay-maglunog Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20090511000555Non-DME Part B · Clinic/Group PracticeDue dateNovember 30, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Maria Susan Buhay-Maglunog MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Maria Buhay Maglunog, M.D.
Internal Medicine
NPI 1699744524
1250 S SUNSET AVE SUITE 201
West Covina, CA 91790
(626) 962-3254
✔ 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 Maria Susan Buhay-Maglunog MD Inc's NPI number?

The NPI number for Maria Susan Buhay-Maglunog MD Inc is 1003081209. It was assigned to this organization in the NPPES registry on April 28, 2008.

Where is Maria Susan Buhay-Maglunog MD Inc located?

Maria Susan Buhay-Maglunog MD Inc is located at 1250 S Sunset Ave Suite 201, West Covina, CA 91790. The listed phone number is (626) 962-3254.

What is Maria Susan Buhay-Maglunog MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Maria Susan Buhay-Maglunog MD Inc enrolled in Medicare?

Yes. Maria Susan Buhay-Maglunog MD Inc is registered in the Medicare PECOS enrollment system.

When is Maria Susan Buhay-Maglunog MD Inc's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Maria Susan Buhay-Maglunog MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Maria Susan Buhay-Maglunog MD 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 Maria Susan Buhay-Maglunog MD Inc was last updated on February 3, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.