Grant McWilliams, D.O.
Obstetrics & Gynecology Physician · Cape Girardeau, MO
Grant McWilliams, D.O. is an obstetrics & gynecology physician with a practice address in Cape Girardeau, Missouri, and NPI 1598729204, issued on Apr 12, 2006. Check the license (Missouri 2012012477, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Grant McWilliams
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 2012012477 MO
1074 HI
Self-reported in NPPES; status is on the state search - Practice location
- 211 Saint Francis Dr, Cape Girardeau, MO 63703
- Phone
- (573) 339-1166
- Enumerated
- Apr 12, 2006
- Record last updated
- Mar 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (573) 339-7166
- Medicare enrollment
- Enrolled (PECOS I20120703000212); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 2003
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 902 in Missouri → Look up another NPI →
Also registered at 211 Saint Francis Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Chad Armstrong, DOEmergency Medicine Physician1104056654
- Tony Asante, MDPain Medicine (Anesthesiology) Physician1083078752
Verify Grant McWilliams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2012012477Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
379 Medicare Part D claims for 116 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. 50 claims were for opioids.
Most prescribed
- Ibuprofen49 claims
- Hydrocodone-Acetaminophen46 claims
- Norethindrone Acetate37 claims
- Estradiol34 claims
- Medroxyprogesterone Acetate32 claims
- Oxybutynin Chloride Er27 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 MIPS final score for 2023 (Medicare payment program): 92.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $55.81
1 payment: food and beverage; the largest payer was Ethicon US, LLC. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Saint Francis Medical CenterCape Girardeau, MO · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Grant McWilliams among 902 obstetrics & gynecology physician records in Missouri
Grant McWilliams, D.O. is one of 902 obstetrics & gynecology physician records with a practice address in Missouri. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 54% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2003 · median 2007 among the 528 with a school on file
- Record last updated2021 · 55% 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 Missouri 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 Missouri
There are 902 obstetrics & gynecology physician records in Missouri.
All 902 in Missouri → Every provider in Cape Girardeau → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Michael Jessup, MDCape Girardeau, MO 637031972503035
- Jessica LemmonsCape Girardeau, MO 637031013100346
- Sara Lorenz, M.D.Cape Girardeau, MO 637031639370539
- Eric Morton, D.O.Cape Girardeau, MO 637031841292216
- Jacob Pyeatte, M.D.Cape Girardeau, MO 637031912964289
- Kenneth Slack, M.D.Cape Girardeau, MO 637031548375637
- Dianne Woolard, M.D.Cape Girardeau, MO 637031336106103
- Paul Clarke, M.D.Cape Girardeau, MO 637011912016056
Common questions
What is Grant McWilliams, D.O.'s NPI number?
Grant McWilliams, D.O.'s National Provider Identifier (NPI) is 1598729204, issued on Apr 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Grant McWilliams, D.O. located?
The NPPES record lists a practice address at 211 Saint Francis Dr, Cape Girardeau, MO, 63703. Phone: (573) 339-1166. Providers update this record themselves, so call before visiting.
How can I verify Grant McWilliams, D.O.'s license?
NPPES lists Missouri license number 2012012477, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grant McWilliams, D.O. prescribe under Medicare Part D?
In 2024, Grant McWilliams, D.O. had 379 Medicare Part D claims for 116 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Grant McWilliams, D.O.'s MIPS final score?
The 2023 MIPS final score is 92.6 of 100. 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.