What is Michael P. Koumjian, MD, a Professional Corporation's NPI number?

Michael P. Koumjian, MD, a Professional Corporation's National Provider Identifier (NPI) is 1528276078, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What type of organization is Michael P. Koumjian, MD, a Professional Corporation?

Michael P. Koumjian, MD, a Professional Corporation is classified in the NPPES registry as Specialist (Other Service Providers).

What is Michael P. Koumjian, MD, a Professional Corporation's phone number?

The practice phone number listed in the NPPES registry for Michael P. Koumjian, MD, a Professional Corporation is (619) 466-5700.

Does Michael P. Koumjian, MD, a Professional Corporation accept Medicare?

Michael P. Koumjian, MD, a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Who is the authorized official for Michael P. Koumjian, MD, a Professional Corporation?

The authorized official listed on Michael P. Koumjian, MD, a Professional Corporation's NPPES record is Michael Koumjian, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.

Is Michael P. Koumjian, MD, a Professional Corporation's NPI active?

Yes — Michael P. Koumjian, MD, a Professional Corporation's NPI (1528276078) is active in the NPPES registry as of the last update on 2007-09-25.

OrganizationActiveAccepts Medicare

Michael P. Koumjian, MD, a Professional Corporation

NPI 1528276078 · Specialist · La Mesa, CA

Michael P. Koumjian, MD, a Professional Corporation is a Specialist organization in La Mesa, CA (NPI 1528276078).

Provider details

NPI number: 1528276078
Entity type: Organization
Primary specialty: SpecialistOther Service Providers
Organization subpart: No
Authorized official: Michael Koumjian, President(619) 466-5700

Practice location

5525 Grossmont Center Dr Ste 609

La Mesa, CA 91942-3009

Phone: (619) 466-5700

Fax: (619) 460-8975

Street-level locationGet directions

More CA providers

Mailing address

5525 Grossmont Center Drive , Suite 609

La Mesa, CA 91942

Specialties & taxonomies

SpecialistPrimary174400000X
Other Service Providers

Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2007-05-18
Last updated: 2007-09-25

Frequently asked questions

What is Michael P. Koumjian, MD, a Professional Corporation's NPI number?: Michael P. Koumjian, MD, a Professional Corporation's National Provider Identifier (NPI) is 1528276078, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What type of organization is Michael P. Koumjian, MD, a Professional Corporation?: Michael P. Koumjian, MD, a Professional Corporation is classified in the NPPES registry as Specialist (Other Service Providers).
Where is Michael P. Koumjian, MD, a Professional Corporation located?: Michael P. Koumjian, MD, a Professional Corporation's practice location on file with NPPES is 5525 Grossmont Center Dr Ste 609, La Mesa, CA 91942-3009.
What is Michael P. Koumjian, MD, a Professional Corporation's phone number?: The practice phone number listed in the NPPES registry for Michael P. Koumjian, MD, a Professional Corporation is (619) 466-5700.
Does Michael P. Koumjian, MD, a Professional Corporation accept Medicare?: Michael P. Koumjian, MD, a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Who is the authorized official for Michael P. Koumjian, MD, a Professional Corporation?: The authorized official listed on Michael P. Koumjian, MD, a Professional Corporation's NPPES record is Michael Koumjian, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
Is Michael P. Koumjian, MD, a Professional Corporation's NPI active?: Yes — Michael P. Koumjian, MD, a Professional Corporation's NPI (1528276078) is active in the NPPES registry as of the last update on 2007-09-25.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions