Michael St Louis, P.A.
NPI 1437250305 · Physician Assistant · Williamsburg, VA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael St Louis, P.A. is a Physician Assistant provider in Williamsburg, VA (NPI 1437250305).
Provider details
- NPI number
- 1437250305
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 023072 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
248 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 110 | $96 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 107 | $139 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 31 | $56 |
Typical Medicare-allowed amounts for these services range $56–$139 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 41 | 40 |
| Cephalexin | 28 | 28 |
| Cefdinir | 26 | 26 |
| Cyclobenzaprine Hcl | 23 | 23 |
| Doxycycline Hyclate | 21 | 20 |
| Levofloxacin | 19 | 18 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (3)
- 300 South Warwick DriveAlma, MI 48801Phone: (989) 463-1101
- Po Box 635004Cincinnati, OH 45263-2047Phone: (260) 435-7001
- Po Box 6354004Cincinnati, OH 45263-2047Phone: (888) 952-6772
Registry dates
- Enumerated
- 2006-09-25
- Last updated
- 2025-07-23
- Certified
- 2025-07-23
Frequently asked questions
- What is Michael St Louis's NPI number?
- Michael St Louis's National Provider Identifier (NPI) is 1437250305, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael St Louis's specialty?
- Michael St Louis is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael St Louis located?
- Michael St Louis's practice location on file with NPPES is 6497 Centerville Rd Ste 300-301, Williamsburg, VA 23188-2047.
- What is Michael St Louis's phone number?
- The practice phone number listed in the NPPES registry for Michael St Louis is (757) 702-8107.
- Does Michael St Louis accept Medicare?
- Michael St Louis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael St Louis's NPI active?
- Yes — Michael St Louis's NPI (1437250305) is active in the NPPES registry as of the last update on 2025-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.