1. Home
  2. Directory
  3. Missouri
  4. Chesterfield
  5. Internal Medicine
  6. NPI Profile

MEDICAL ASSOCIATES OF CHESTERFIELD, LLC
NPI 1265778138
Internal Medicine in Chesterfield, MO

Active since December 21, 2012
224 S WOODS MILL RD STE 370S, CHESTERFIELD, MO 63017(314) 878-2460(314) 590-5946 Get Directions Write a Review

NPPES record last updated: March 5, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 5, 2026, Dec 12, 2025, Apr 26, 2021 and 1 more (4 updates tracked since 2015).

About Medical Associates Of Chesterfield, Llc NPPES

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

MEDICAL ASSOCIATES OF CHESTERFIELD, LLC (NPI 1265778138) is a healthcare organization registered as an internal medicine in Chesterfield, Missouri and active in the NPI registry since December 2012. The organization lists Darren R. Haskell, Chief Medical Officer, as its authorized official.

NPPES Registry Identity

NPI1265778138
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMEDICAL ASSOCIATES OF CHESTERFIELD, LLC
Location Address224 S WOODS MILL RD STE 370SChesterfield, MO 63017-3603
Mailing Address232 S Woods Mill RdChesterfield, MO 63017-3406 · (636) 685-7804 · Fax (314) 576-2344
Phone(314) 878-2460
Fax(314) 590-5946
Organization SubpartYesParent: St. Lukes Medical Group
Authorized OfficialDarren R. HaskellChief Medical Officer · (314) 205-6444
Enumeration DateDecember 21, 2012
Last NPPES UpdateMarch 5, 20264 updates tracked since enumeration
NPPES CertifiedMarch 5, 2026
✔ NPI 1265778138 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
224 S WOODS MILL RD STE 370S, Chesterfield, MO 63017
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

Other Providers at the Same Location NPPES 2

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

JI HUANG LLC
Internal Medicine
224 S WOODS MILL RD STE 370S
CHESTERFIELD, MO 63017
St. Louis County (314) 878-2460
DR. JI HUANG MD
Internal Medicine
224 S WOODS MILL RD STE 370S
CHESTERFIELD, MO 63017
St. Louis County (314) 878-2460

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 Medical Associates Of Chesterfield, LLC's NPI number?

The NPI number for Medical Associates Of Chesterfield, LLC is 1265778138. It was assigned to this organization in the NPPES registry on December 21, 2012.

Where is Medical Associates Of Chesterfield, LLC located?

Medical Associates Of Chesterfield, LLC is located at 224 S Woods Mill Rd Ste 370S, Chesterfield, MO 63017. The listed phone number is (314) 878-2460.

What is Medical Associates Of Chesterfield, LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

What insurance does Medical Associates Of Chesterfield, LLC accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 3 other insurers list Medical Associates Of Chesterfield, LLC 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.

When was this NPI record last updated?

The NPPES record for Medical Associates Of Chesterfield, LLC was last updated on March 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.