SOUTHERN MISSOURI INTERNAL MEDICINE, PC
NPI 1750625844
Internal Medicine in Cape Girardeau, MO

Q: What is Southern Missouri Internal Medicine, PC's specialty?

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

Active since November 15, 2012CLIA 26D0873289 · Waiver

3260 LEXINGTON AVE, CAPE GIRARDEAU, MO 63701(573) 335-5057(573) 335-1552 Get Directions Write a Review

NPPES record last updated: November 15, 2012. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Southern Missouri Internal Medicine, Pc NPPES

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

SOUTHERN MISSOURI INTERNAL MEDICINE, PC (NPI 1750625844) is a healthcare organization registered as an internal medicine in Cape Girardeau, Missouri and active in the NPI registry since November 2012. The organization holds a CLIA Waiver certificate valid through July 21, 2027 and lists Mark Jeffery Mcnabb, Owner, as its authorized official.

NPPES Registry Identity

NPI1750625844

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameSOUTHERN MISSOURI INTERNAL MEDICINE, PC

Location Address3260 LEXINGTON AVECape Girardeau, MO 63701-2609

Mailing Address3260 Lexington AveCape Girardeau, MO 63701-2609 · (573) 335-5057 · Fax (573) 335-1552

Phone(573) 335-5057

Fax(573) 335-1552

Organization SubpartNo

Authorized OfficialMark Jeffery McnabbOwner · (573) 335-5057

Enumeration DateNovember 15, 2012

✔ NPI 1750625844 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MO · DO100129

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.

3260 LEXINGTON AVE, Cape Girardeau, MO 63701

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Other Identifiers 3

Medicare UPINF14056MO

Medicaid203716006MO

Medicare PIN000001532MO

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)

Southern Missouri 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 Southern Missouri Internal Medicine, PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Mark Mcnabb, D.O.

Internal Medicine

NPI 1942337522

3260 LEXINGTON AVE
Cape Girardeau, MO 63701

(573) 335-5057

✔ PECOSSame address

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

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 26D0873289

Southern Missouri Internal Medicine PC · Cape Girardeau, MO

Active · expires Jul 21, 2027

CLIA Number26D0873289

Laboratory TypePhysician Office

Certificate Effective DateJuly 22, 2025

Certificate Expiration DateJuly 21, 2027

Laboratory DirectorM Jeffery Mcnabb Do

Laboratory Phone(573) 335-5057

Laboratory LocationSouthern Missouri Internal Medicine PC3537 Pheasant Cove Dr, Cape Girardeau, MO 63701

CLIA data matches this NPI record on: Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Southern Missouri Internal Medicine, PC's NPI number?

The NPI number for Southern Missouri Internal Medicine, PC is 1750625844. It was assigned to this organization in the NPPES registry on November 15, 2012.

Where is Southern Missouri Internal Medicine, PC located?

Southern Missouri Internal Medicine, PC is located at 3260 Lexington Ave, Cape Girardeau, MO 63701. The listed phone number is (573) 335-5057.

What is Southern Missouri Internal Medicine, PC's specialty?

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

Is Southern Missouri Internal Medicine, PC enrolled in Medicare?

Yes. Southern Missouri Internal Medicine, PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Southern Missouri Internal Medicine, PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Southern Missouri 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.

Does Southern Missouri Internal Medicine, PC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 26D0873289) is associated with this NPI, valid through July 21, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Southern Missouri Internal Medicine, PC was last updated on November 15, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.