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AGASSIZ FAMILY MEDICINE
NPI 1477726222
Family Medicine in Flagstaff, AZ

Active since April 11, 2008CLIA 03D0720602 · Microscopy
417 N AGASSIZ ST, BLDG #1, FLAGSTAFF, AZ 86001(928) 779-6169(928) 779-4200 Get Directions Write a Review

NPPES record last updated: December 30, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Agassiz Family Medicine NPPES

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

AGASSIZ FAMILY MEDICINE (NPI 1477726222) is a healthcare organization registered as a family medicine in Flagstaff, Arizona and active in the NPI registry since April 2008. The organization holds a CLIA Microscopy certificate valid through August 31, 2028 and lists Mark Vincent Seby, Physician, as its authorized official.

NPPES Registry Identity

NPI1477726222
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameMARK SEBY MD PC
Location Address417 N AGASSIZ ST, BLDG #1Flagstaff, AZ 86001-3282
Mailing Address417 N Agassiz St, Bldg #1Flagstaff, AZ 86001-3282 · (928) 779-6169 · Fax (928) 779-4200
Phone(928) 779-6169
Fax(928) 779-4200
Organization SubpartNo
Authorized OfficialMark Vincent SebyPhysician · (928) 779-6169
Enumeration DateApril 11, 2008
Last NPPES UpdateDecember 30, 2010
✔ NPI 1477726222 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in AZ · AZ11476
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
417 N AGASSIZ ST, Flagstaff, AZ 86001
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Other Names 1

Doing Business AsAgassiz Family Medicine

Other Identifiers 11

Other87726AZ · United Healthcare
Medicare UPIND37618AZ
Medicaid23957601AZ
Medicare PINZ63389AZ
Other5447372AZ · Aetna
Other080008588AZ · Railroad Medicare
OtherAZ0021730AZ · Blue Cross Blue Shield Az
Other188857300AZ · Us Dept Of Labor
Other3323257AZ · Cigna
Other1Z8845AZ · Healthnet Az
Other71412AZ · Mutual Of Omaha

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Agassiz Family Medicine 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 Agassiz Family Medicine, which bills Medicare for the services this clinician delivers.

Clinician (1)

Mark Seby, M.D.
Family Practice
NPI 1649277492
417 N AGASSIZ ST BLDG 1
Flagstaff, AZ 86001
(928) 779-6169
✔ 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 for Provider-Performed Microscopy Procedures (PPMP) 03D0720602

Mark Seby MD PC · Flagstaff, AZ
Active · expires Aug 31, 2028
CLIA Number03D0720602
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorMark V. Seby
Laboratory Phone(928) 779-6169
Laboratory LocationMark Seby MD PC417 N Agassiz St, Bldg 1, Flagstaff, AZ 86001
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform 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 Mark Seby MD PC's NPI number?

The NPI number for Mark Seby MD PC is 1477726222. It was assigned to this organization in the NPPES registry on April 11, 2008. The provider is doing business as Agassiz Family Medicine.

Where is Mark Seby MD PC located?

Mark Seby MD PC is located at 417 N Agassiz St Bldg #1, Flagstaff, AZ 86001. The listed phone number is (928) 779-6169.

What is Mark Seby MD PC's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Mark Seby MD PC enrolled in Medicare?

Yes. Mark Seby MD PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mark Seby MD PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Mark Seby MD PC. 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 Mark Seby MD PC hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 03D0720602) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Mark Seby MD PC was last updated on December 30, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.