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MICHAEL ROBERT ST LOUIS P.A.
NPI 1437250305
Physician Assistant in Williamsburg, VA

Active since September 25, 2006PECOS EnrolledAccepts Medicare Assignment
90.59/100
CMS Quality Rating
6497 CENTERVILLE RD STE 300-301, WILLIAMSBURG, VA 23188(757) 702-8107 Get Directions Write a Review

NPPES record last updated: July 23, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 16, 2025, Dec 23, 2021, May 21, 2021 and 1 more (4 updates tracked since 2021).

About Michael Robert St Louis P.a. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL ROBERT ST LOUIS P.A. (NPI 1437250305) is an individual physician assistant in Williamsburg, Virginia, licensed in Ohio (50.005783RX) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Sentara Williamsburg Regional Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1437250305
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameMICHAEL ROBERT ST LOUISCredential: P.A.
Location Address6497 CENTERVILLE RD STE 300-301Williamsburg, VA 23188-2047
Mailing Address5507 Vandemere DrMidland, MI 48642-7282 · (989) 832-9124
Phone(757) 702-8107
Sole ProprietorYes
Medical School CMSOtherGraduated 2002
Enumeration DateSeptember 25, 2006
Last NPPES UpdateJuly 23, 20254 updates tracked since enumeration
NPPES CertifiedJuly 23, 2025
✔ NPI 1437250305 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Licenses✔ Licensed in OH · 50.005783RX✔ Licensed in NY · 023072✔ Licensed in NJ · 25MP00606400✔ Licensed in MI · 003873✔ Licensed in IN · 10002696A
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
6497 CENTERVILLE RD STE 300-301, Williamsburg, VA 23188
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Secondary Practice Locations 3

Location 1300 South Warwick DriveAlma, MI 48801 · Phone (989) 463-1101
Location 2PO Box 6354004Cincinnati, OH 45263-2047 · Phone (888) 952-6772
Location 3PO Box 635004Cincinnati, OH 45263-2047 · Phone (260) 435-7001

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael Robert St Louis P.a. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6901795889
PECOS Enrollment IDI20250906000480
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
110 services106 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
107 services104 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
31 services30 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sentara Williamsburg Regional Medical Center

Acute Care Hospitals · Williamsburg, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490066
Location100 Sentara CircleWilliamsburg, VA 23188 · James City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 23188 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$86.88 typical visit price
range $56.19 – $170.30
Typical copayment $21.72 (range $14.04 – $42.57)
Most-billed visit code 99203
Established Patient
$70.08 typical visit price
range $18.07 – $138.91
Typical copayment $17.52 (range $4.51 – $34.72)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

90.59/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality94.26
Promoting Interoperability100
Improvement Activities40
Cost67.03

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

VELOCITY URGENT CARE, LLC
Clinic/Center
6497 CENTERVILLE RD STE 300-301
WILLIAMSBURG, VA 23188
James City County (757) 702-8107

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael St Louis's NPI number?

The NPI number for Michael St Louis is 1437250305. It was assigned to this individual provider in the NPPES registry on September 25, 2006.

Where is Michael St Louis located?

Michael St Louis practices at 6497 Centerville Rd Ste 300-301, Williamsburg, VA 23188. The listed phone number is (757) 702-8107.

What is Michael St Louis's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Michael St Louis enrolled in Medicare?

Yes. Michael St Louis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Michael St Louis accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Michael St Louis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Michael St Louis affiliated with any hospitals?

According to CMS data, Michael St Louis is affiliated with Sentara Williamsburg Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Michael St Louis was last updated on July 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.