Michael Robert St Louis, P.A.
Physician Assistant · Williamsburg, VA
Michael Robert St Louis, P.A. is a physician assistant with a practice address in Williamsburg, Virginia, and NPI 1437250305, issued on Sep 25, 2006. Check the license with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Robert St Louis
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 50.005783RX OH
10002696A IN
003873 MI
25MP00606400 NJ
023072 NY
Self-reported in NPPES; status is on the state search - Practice location
- 6497 Centerville RD Ste 300-301, Williamsburg, VA 23188
- Phone
- (757) 702-8107
- Enumerated
- Sep 25, 2006
- Record last updated
- Jul 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20250906000480); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,408 in Virginia → Look up another NPI →
Verify Michael Robert St Louis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average physician assistant in 2024
300 Medicare Part D claims for 216 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 19 claims were for opioids.
Most prescribed
- Prednisone41 claims
- Cephalexin28 claims
- Cefdinir26 claims
- Cyclobenzaprine Hcl23 claims
- Doxycycline Hyclate21 claims
- Levofloxacin19 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): 90.6 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).
Bills Medicare through one group practice
- Velocity Urgent Care LLCWilliamsburg, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Robert St Louis among 4,408 physician assistant records in Virginia
Michael Robert St Louis, P.A. is one of 4,408 physician assistant records with a practice address in Virginia. 78% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 86% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2002 · median 2018 among the 2,885 with a school on file
- Record last updated2025 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 physician assistant records list a practice address in Williamsburg
They are 38 of the 1,707 NPPES records with a practice address in Williamsburg, and 4,408 physician assistant records in Virginia.
All 4,408 in Virginia → Every provider in Williamsburg → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sarah Bott, P.A.Williamsburg, VA 231881730158346
- Van Deblieux, PA-CWilliamsburg, VA 231881861714404
- Erin Desrosiers, PAWilliamsburg, VA 231881659564557
- Virginia Knight, PA-CWilliamsburg, VA 231881053455055
- John Lynch, MPAS PA-CWilliamsburg, VA 231881154676104
- Hannah Manson, PAWilliamsburg, VA 231881083080295
- Catherine McCann-Shelton, PAWilliamsburg, VA 231881861597056
- Elizabeth Omasta, PA-CWilliamsburg, VA 231881780623835
Common questions
What is Michael Robert St Louis, P.A.'s NPI number?
Michael Robert St Louis, P.A.'s National Provider Identifier (NPI) is 1437250305, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Robert St Louis, P.A. located?
The NPPES record lists a practice address at 6497 Centerville RD Ste 300-301, Williamsburg, VA, 23188. Phone: (757) 702-8107. Providers update this record themselves, so call before visiting.
How can I verify Michael Robert St Louis, P.A.'s license?
Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Robert St Louis, P.A. prescribe under Medicare Part D?
In 2024, Michael Robert St Louis, P.A. had 300 Medicare Part D claims for 216 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Michael Robert St Louis, P.A.'s MIPS final score?
The 2023 MIPS final score is 90.6 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.