Chesterfield Internal Medicine and Rheumatology, LLC
NPI 1659463941 · Internal Medicine Physician · Chesterfield, MO
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chesterfield Internal Medicine and Rheumatology, LLC is a Internal Medicine Physician organization in Chesterfield, MO (NPI 1659463941).
Provider details
- NPI number
- 1659463941
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Parent organization
- St. Lukes Medical Group
- Organization subpart
- Yes
- Authorized official
- Darren Haskell, Chief Medical Officer(314) 205-6444
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Rheumatology Physician207RR0500X
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2026-03-05
- Certified
- 2026-03-05
Frequently asked questions
- What is Chesterfield Internal Medicine and Rheumatology, LLC's NPI number?
- Chesterfield Internal Medicine and Rheumatology, LLC's National Provider Identifier (NPI) is 1659463941, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Chesterfield Internal Medicine and Rheumatology, LLC?
- Chesterfield Internal Medicine and Rheumatology, LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chesterfield Internal Medicine and Rheumatology, LLC located?
- Chesterfield Internal Medicine and Rheumatology, LLC's practice location on file with NPPES is 226 S Woods Mill Rd Ste 43, Chesterfield, MO 63017-3663.
- What is Chesterfield Internal Medicine and Rheumatology, LLC's phone number?
- The practice phone number listed in the NPPES registry for Chesterfield Internal Medicine and Rheumatology, LLC is (314) 205-6444.
- Does Chesterfield Internal Medicine and Rheumatology, LLC accept Medicare?
- Chesterfield Internal Medicine and Rheumatology, LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Chesterfield Internal Medicine and Rheumatology, LLC?
- The authorized official listed on Chesterfield Internal Medicine and Rheumatology, LLC's NPPES record is Darren Haskell, Chief Medical Officer. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Chesterfield Internal Medicine and Rheumatology, LLC's NPI active?
- Yes — Chesterfield Internal Medicine and Rheumatology, LLC's NPI (1659463941) is active in the NPPES registry as of the last update on 2026-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.