INTERNAL MEDICINE, LLC
NPI 1235389859
Internal Medicine in Saint Louis, MO

Q: What is Internal Medicine, LLC's NPI number?

The NPI number for Internal Medicine, LLC is 1235389859. It was assigned to this organization in the NPPES registry on September 19, 2008.

Q: What is Internal Medicine, LLC's specialty?

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

Active since September 19, 2008

4346 LOUGHBOROUGH AVE, SAINT LOUIS, MO 63116(314) 481-7030(314) 481-7120 Get Directions Write a Review

NPPES record last updated: September 19, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Internal Medicine, Llc NPPES

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

INTERNAL MEDICINE, LLC (NPI 1235389859) is a healthcare organization registered as an internal medicine in Saint Louis, Missouri and active in the NPI registry since September 2008. The organization lists Alexander Rudoi, Owner, as its authorized official.

NPPES Registry Identity

NPI1235389859

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameINTERNAL MEDICINE, LLC

Location Address4346 LOUGHBOROUGH AVESaint Louis, MO 63116-2104

Mailing Address4346 Loughborough AveSaint Louis, MO 63116-2104 · (314) 481-7030 · Fax (314) 481-7120

Phone(314) 481-7030

Fax(314) 481-7120

Organization SubpartNo

Authorized OfficialAlexander RudoiOwner · (314) 481-7030

Enumeration DateSeptember 19, 2008

✔ NPI 1235389859 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.

4346 LOUGHBOROUGH AVE, Saint Louis, MO 63116

Open in Google Maps ↗

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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Internal Medicine, Llc 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 Internal Medicine, LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Alexander Rudoi, MD

Internal Medicine

NPI 1740254374

4346 LOUGHBOROUGH AVE
Saint Louis, MO 63116

(314) 481-7030

✔ 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 Internal Medicine, LLC's NPI number?

The NPI number for Internal Medicine, LLC is 1235389859. It was assigned to this organization in the NPPES registry on September 19, 2008.

Where is Internal Medicine, LLC located?

Internal Medicine, LLC is located at 4346 Loughborough Ave, Saint Louis, MO 63116. The listed phone number is (314) 481-7030.

What is Internal Medicine, LLC's specialty?

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

Is Internal Medicine, LLC enrolled in Medicare?

Yes. Internal Medicine, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Internal Medicine, LLC?

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

What insurance does Internal Medicine, LLC accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 1 other insurer list Internal 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 Internal Medicine, LLC was last updated on September 19, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.