CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC – NPI #1659463941
Internal Medicine

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.

CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC is a provider located in CHESTERFIELD, MO. NPPES has assigned the NPI number 1659463941 to CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC on September 28, 2006. It is a Type-2 NPI, indicating this NPI number is associated with an organization. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207R00000X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine.

The NPI profile was last updated on Mar 05, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC below.

NPI Profile for
CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC

NPI Number
1659463941
Enumeration Date

(more than 19 years ago)
Entity Type
Type-2  Organization
Organization health care providers may have a single employee or thousands of employees. An example is an incorporated individual who is an organization's only employee.
Legal Name
CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC
Primary location
226 S WOODS MILL RD STE 43
CHESTERFIELD, MO 63017-3663
Phone: (314) 205-6444 Fax: (314) 590-5924
1 Other location(s):
226 S Woods Mill Rd Ste 40
Chesterfield, MO 63017-3662
Phone: (314) 205-6444
Fax: (314) 590-5924
Mailing address
232 S WOODS MILL RD
CHESTERFIELD, MO 63017-3406
Phone: (636) 685-7804 Fax:
Organization Subpart
Yes - CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC is subpart of another organization.
Authorized Official
DARREN HASKELL
CHIEF MEDICAL OFFICER
Phone: (314) 205-6444
Updated
Certification Date
Mar 05, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Identifiers

Identifiers for CHESTERFIELD INTERNAL MEDICINE AND RHEUMATOLOGY, LLC

Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.

DescriptionIssuerStateIdentifier
otherMEDICARE RAILROADMODD5556
Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207R00000X
- Internal Medicine (Primary)
207RR0500X
- Internal Medicine / Rheumatology

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.