Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mario Chaves PC

Obstetrics & Gynecology Physician in Owosso, MI · enumerated 2006 · authorized official Cesar Chaves, Physician Proprietor.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1871699371

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Registry record

Entity type Organization (Type 2)

Legal business name Mario Chaves PC

Other name <Unavail>

Practice address 818 W King St, Suite 103, Owosso, MI, 48867

Phone (989) 729-4300

Fax (989) 729-4303

Enumeration date Sep 15, 2006

Last updated in NPPES Jul 7, 2009

Taxonomy & classification

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 4301086974 (MI) Primary

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704234443 (MI) Secondary

Authorized official

Name Cesar Chaves

Title Physician Proprietor

Phone (989) 729-4300

Other identifiers

Identifier	Type	State	Issuer
1607810341	Other	MI	BLUE CROSS BLUE SHIELD
104813851	Medicaid	MI	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-07-07. Verify at npiregistry.cms.hhs.gov.

Where is Mario Chaves PC located?

The practice location on file with NPPES is in Owosso, MI.

Providers at this address

Browse all →

Catherine Winslow Obstetrics & Gynecology Physician · Owosso, MI NPI 1003865205 Mandell Bookman Urology Physician · Owosso, MI NPI 1598775702 Richard Schulz Surgery Physician · Owosso, MI NPI 1225141559 Shannon Radgens Plastic Surgery within the Head & Neck (Otolaryngology) Physician · Owosso, MI NPI 1316051949 Walid Azmeh Surgery Physician · Owosso, MI NPI 1063527182 Marie Spiess Physician Assistant · Owosso, MI NPI 1104909753 Rany Aburashed Neurology Physician · Owosso, MI NPI 1790909711 Amy Blaising Wallace, D.O. Plc Family Medicine Physician · Owosso, MI NPI 1619171519

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-07.