Medical Associates of Chesterfield, LLC

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

Legal business name

MEDICAL ASSOCIATES OF CHESTERFIELD, LLC

Practice address

224 S Woods Mill Rd Ste 370S
Chesterfield, MO 63017-3603

Phone

(314) 878-2460

Fax

(314) 590-5946

NPI assigned

Dec 21, 2012

Organization subpart

Yes

Parent organization

ST. LUKES MEDICAL GROUPAs reported in NPPES

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Darren R. Haskell, MD.

Title

Chief Medical Officer

Phone

(314) 205-6444

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MO

Enrollment records 1

Part of

St Lukes Medical Group

Member of 1

Organizations this organization is a member of, according to the National Provider Directory.

• St. Lukes Medical Group

  • Family Medicine Physician
  • Chesterfield, MO
  • NPI 1215308945

  Member Of

  NPD member

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

• St. Lukes Medical Group

  • Family Medicine Physician
  • Chesterfield, MO
  • NPI 1215308945
  NPPES parent name

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Xiaoling Wu, MD

  • Internal Medicine Physician
  • Chesterfield, MO
  • NPI 1003899147
  Medicare reassignment NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1356048000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1772668800000",
    "number": "1265778138",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "232 S WOODS MILL RD",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630173406",
            "telephone_number": "636-685-7804",
            "fax_number": "314-576-2344"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "224 S WOODS MILL RD STE 370S",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630173603",
            "telephone_number": "314-878-2460",
            "fax_number": "314-590-5946"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MEDICAL ASSOCIATES OF CHESTERFIELD, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "ST. LUKES MEDICAL GROUP",
        "enumeration_date": "2012-12-21",
        "last_updated": "2026-03-05",
        "certification_date": "2026-03-05",
        "status": "A",
        "authorized_official_last_name": "HASKELL",
        "authorized_official_first_name": "DARREN",
        "authorized_official_middle_name": "R.",
        "authorized_official_title_or_position": "CHIEF MEDICAL OFFICER",
        "authorized_official_telephone_number": "314-205-6444",
        "authorized_official_credential": "MD."
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Med Resources, Inc.
• Med Tech Care Inc
• Med Tech Care Inc
• Ryan Medas, PHARM.D.
• Yared Medhane, M.D.
• Medical Specialists of St Lukes LLC
• Medical Weight Management Specialists, LLC
• William B. Mehard, MD
• Michael J Meinzen, M.D.
• Andrew Michael Melaragno

• Internal Medicine Physician in Chesterfield, MO
• Providers in Chesterfield, MO by specialty
• Internal Medicine Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.