Cesar Mario Chaves, MD
Obstetrics & Gynecology Physician · Owosso, MI
Cesar Mario Chaves, MD is an obstetrics & gynecology physician with a practice address in Owosso, Michigan, and NPI 1457335226, issued on Dec 5, 2005. Check the license (Michigan 4301086974, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Cesar Mario Chaves
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 4301086974 MI
Self-reported in NPPES; status is on the state search - Practice location
- 818 W King St Ste LL, Owosso, MI 48867
- Phone
- (989) 729-4292
- Enumerated
- Dec 5, 2005
- Record last updated
- May 19, 2022
- Fax
- (989) 725-9012
- Medicaid ID
- 1457335226 MI
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,776 in Michigan → Look up another NPI →
Also registered at 818 W King St Ste LL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ira Frye, MDObstetrics & Gynecology Physician1184846354
- Keegan Pabst, LMSWClinical Social Worker1275486870
- Allyson Palazzolo, NPFamily Nurse Practitioner1376318030
- Morgan Russ, LLMSWSocial Worker1154169621
- Arlanda Smith, MSN, WHNP-BCWomen's Health Nurse Practitioner1679917322
- Laurie Weber, LMSWClinical Social Worker1235732470
Verify Cesar Mario Chaves in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301086974Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
62 Medicare Part D claims for 23 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol44 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 56.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Cesar Mario Chaves among 1,776 obstetrics & gynecology physician records in Michigan
Cesar Mario Chaves, MD is one of 1,776 obstetrics & gynecology physician records with a practice address in Michigan. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Michigan
There are 1,776 obstetrics & gynecology physician records in Michigan.
All 1,776 in Michigan → Every provider in Owosso → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ira Frye, MDOwosso, MI 488671184846354
- Jessica Laforest, MDOwosso, MI 488671437378767
- Catherine Winslow, MDOwosso, MI 488671003865205
- Lori Burke, MD.Okemos, MI 488641245430024
- Sung Lee, M.D.Okemos, MI 488641477571461
- Thomas Petroff, DOOkemos, MI 488641578542452
- Sandra Russell, DOOkemos, MI 488641417937723
- Kristen Carrillo-Kappus, MD, MPHMount Pleasant, MI 488581639707896
Common questions
What is Cesar Mario Chaves, MD's NPI number?
Cesar Mario Chaves, MD's National Provider Identifier (NPI) is 1457335226, issued on Dec 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Cesar Mario Chaves, MD located?
The NPPES record lists a practice address at 818 W King St Ste LL, Owosso, MI, 48867. Phone: (989) 729-4292. Providers update this record themselves, so call before visiting.
How can I verify Cesar Mario Chaves, MD's license?
NPPES lists Michigan license number 4301086974, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Cesar Mario Chaves, MD prescribe under Medicare Part D?
In 2024, Cesar Mario Chaves, MD had 62 Medicare Part D claims for 23 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Cesar Mario Chaves, MD's MIPS final score?
The 2023 MIPS final score is 56.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.