Internal Medicine of Chesterfield, LLC
NPI 1265853543 · Internal Medicine Physician · Chesterfield, MO
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Internal Medicine of Chesterfield, LLC is a Internal Medicine Physician organization in Chesterfield, MO (NPI 1265853543).
Provider details
- NPI number
- 1265853543
- 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
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
- 2014-01-03
- Last updated
- 2026-03-05
- Certified
- 2026-03-05
Frequently asked questions
- What is Internal Medicine of Chesterfield, LLC's NPI number?
- Internal Medicine of Chesterfield, LLC's National Provider Identifier (NPI) is 1265853543, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Internal Medicine of Chesterfield, LLC?
- Internal Medicine of Chesterfield, LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Internal Medicine of Chesterfield, LLC located?
- Internal Medicine of Chesterfield, LLC's practice location on file with NPPES is 222 S Woods Mill Rd Ste 650n, Chesterfield, MO 63017-3648.
- What is Internal Medicine of Chesterfield, LLC's phone number?
- The practice phone number listed in the NPPES registry for Internal Medicine of Chesterfield, LLC is (314) 682-3625.
- Does Internal Medicine of Chesterfield, LLC accept Medicare?
- Internal Medicine of Chesterfield, 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 Internal Medicine of Chesterfield, LLC?
- The authorized official listed on Internal Medicine of Chesterfield, 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 Internal Medicine of Chesterfield, LLC's NPI active?
- Yes — Internal Medicine of Chesterfield, LLC's NPI (1265853543) 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.