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SPECIALISTS IN INTERNAL MEDICINE, PC
NPI 1023096187
Internal Medicine in Clayton, MO

Active since January 08, 2006
950 FRANCIS PL, STE 317, CLAYTON, MO 63105(314) 721-6936(314) 721-6915 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Specialists In Internal Medicine, Pc NPPES

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

SPECIALISTS IN INTERNAL MEDICINE, PC (NPI 1023096187) is a healthcare organization registered as an internal medicine in Clayton, Missouri and active in the NPI registry since January 2006. The organization lists Melvin J Butler, President, as its authorized official.

NPPES Registry Identity

NPI1023096187
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSPECIALISTS IN INTERNAL MEDICINE, PC
Location Address950 FRANCIS PL, STE 317Clayton, MO 63105-2465
Mailing Address950 Francis Pl, Ste 317Clayton, MO 63105-2465 · (314) 721-6936 · Fax (314) 721-6915
Phone(314) 721-6936
Fax(314) 721-6915
Organization SubpartNo
Authorized OfficialMelvin J ButlerPresident · (314) 491-6793
Enumeration DateJanuary 8, 2006
Last NPPES UpdateAugust 22, 2020
✔ NPI 1023096187 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.
950 FRANCIS PL, Clayton, MO 63105
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Other Identifiers 1

OtherDC0291Rr Medicare

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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Specialists In Internal Medicine, Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Specialists In Internal Medicine, PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Melvin Butler, MD
Internal Medicine
NPI 1841278850
950 FRANCIS PL STE 317
Clayton, MO 63105
(314) 721-6936
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Specialists In Internal Medicine, PC's NPI number?

The NPI number for Specialists In Internal Medicine, PC is 1023096187. It was assigned to this organization in the NPPES registry on January 8, 2006.

Where is Specialists In Internal Medicine, PC located?

Specialists In Internal Medicine, PC is located at 950 Francis Pl Ste 317, Clayton, MO 63105. The listed phone number is (314) 721-6936.

What is Specialists In Internal Medicine, PC's specialty?

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

Is Specialists In Internal Medicine, PC enrolled in Medicare?

Yes. Specialists In Internal Medicine, PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Specialists In Internal Medicine, PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Specialists In Internal Medicine, PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Specialists In Internal Medicine, PC was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.