James Williams, MD
NPI 1043290620 · Physical Medicine & Rehabilitation Physician · Chesterfield, MO
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Williams, MD is a Physical Medicine & Rehabilitation Physician provider in Chesterfield, MO (NPI 1043290620).
Provider details
- NPI number
- 1043290620
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2005033056 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
209 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 93 | $91 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 57 | $69 |
| Nerve Conduction, 9-10 Studies95911 | 27 | $201 |
| Nerve Conduction, 5-6 Studies95909 | 17 | $127 |
| Nerve Conduction, 7-8 Studies95910 | 15 | $167 |
Typical Medicare-allowed amounts for these services range $69–$201 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$121 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-19
- Last updated
- 2022-05-03
- Certified
- 2022-05-03
Frequently asked questions
- What is James Williams's NPI number?
- James Williams's National Provider Identifier (NPI) is 1043290620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Williams's specialty?
- James Williams is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is James Williams located?
- James Williams's practice location on file with NPPES is 121 Saint Lukes Center Dr, Chesterfield, MO 63017-3509.
- What is James Williams's phone number?
- The practice phone number listed in the NPPES registry for James Williams is (314) 390-6789.
- Does James Williams accept Medicare?
- James Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Williams's NPI active?
- Yes — James Williams's NPI (1043290620) is active in the NPPES registry as of the last update on 2022-05-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.