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WEST COUNTY ADULT MEDICINE, LLC
NPI 1497943393
Internal Medicine in Chesterfield, MO

Active since October 05, 2007CLIA 26D0436986 · Waiver
224 S WOODS MILL RD STE 510S, CHESTERFIELD, MO 63017(314) 205-6605(314) 590-5928 Get Directions Write a Review

NPPES record last updated: March 5, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 5, 2026, Dec 12, 2025, Apr 26, 2021 and 1 more (4 updates tracked since 2017).

About West County Adult Medicine, Llc NPPES

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

WEST COUNTY ADULT MEDICINE, LLC (NPI 1497943393) is a healthcare organization registered as an internal medicine in Chesterfield, Missouri and active in the NPI registry since October 2007. The organization holds a CLIA Waiver certificate valid through August 31, 2026 and lists Darren R. Haskell, Chief Medical Officer, as its authorized official.

NPPES Registry Identity

NPI1497943393
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameWEST COUNTY ADULT MEDICINE, LLC
Location Address224 S WOODS MILL RD STE 510SChesterfield, MO 63017-3611
Mailing Address232 S Woods Mill RdChesterfield, MO 63017-3406 · (636) 685-7804 · Fax (314) 576-2344
Phone(314) 205-6605
Fax(314) 590-5928
Organization SubpartYesParent: St. Lukes Medical Group
Authorized OfficialDarren R. HaskellChief Medical Officer · (314) 205-6444
Enumeration DateOctober 5, 2007
Last NPPES UpdateMarch 5, 20264 updates tracked since enumeration
NPPES CertifiedMarch 5, 2026
✔ NPI 1497943393 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.
Also ListedInternal Medicine · Infectious DiseaseTaxonomy 207RI0200X
224 S WOODS MILL RD STE 510S, Chesterfield, MO 63017
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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 ›

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 26D0436986

West County Adult Medicine, LLC · Chesterfield, MO
Active · expires Aug 31, 2026
CLIA Number26D0436986
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2024
Certificate Expiration DateAugust 31, 2026
Laboratory DirectorJoseph M. Fritz
Laboratory Phone(314) 205-6605
Laboratory LocationWest County Adult Medicine, LLC224 S Woods Mill Rd, Ste 510, Chesterfield, MO 63017
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES

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

DR. DAVID OLON MCCRARY M.D.
Internal Medicine (Infectious Disease)
224 S WOODS MILL RD STE 510S
CHESTERFIELD, MO 63017
St. Louis County (314) 205-6605

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 West County Adult Medicine, LLC's NPI number?

The NPI number for West County Adult Medicine, LLC is 1497943393. It was assigned to this organization in the NPPES registry on October 5, 2007.

Where is West County Adult Medicine, LLC located?

West County Adult Medicine, LLC is located at 224 S Woods Mill Rd Ste 510S, Chesterfield, MO 63017. The listed phone number is (314) 205-6605.

What is West County Adult Medicine, LLC's specialty?

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

Does West County Adult Medicine, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 26D0436986) is associated with this NPI, valid through August 31, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does West County Adult Medicine, 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 West County Adult Medicine, 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 West County Adult Medicine, 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.