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LUDAG LLC
NPI 1336195353
Radiology - Radiation Oncology in Merrillville, IN

Active since May 25, 2006
8701 BROADWAY, MERRILLVILLE, IN 46410(574) 271-2558(574) 273-1137 Get Directions Write a Review

NPPES record last updated: January 14, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ludag Llc NPPES

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

LUDAG LLC (NPI 1336195353) is a healthcare organization registered as a radiation oncology in Merrillville, Indiana and active in the NPI registry since May 2006. The organization maintains a secondary practice location in Bourbonnais and lists Robert T Woodburn, Owner, as its authorized official.

NPPES Registry Identity

NPI1336195353
Entity TypeOrganization
Primary Taxonomy2085R0001X
Legal Business NameLUDAG LLC
Location Address8701 BROADWAYMerrillville, IN 46410-7035
Mailing Address8701 BroadwayMerrillville, IN 46410-7035
Phone(574) 271-2558
Fax(574) 273-1137
Organization SubpartNo
Authorized OfficialRobert T WoodburnOwner · (219) 763-2246
Enumeration DateMay 25, 2006
Last NPPES UpdateJanuary 14, 2025
NPPES CertifiedJanuary 14, 2025
✔ NPI 1336195353 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
8701 BROADWAY, Merrillville, IN 46410
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Secondary Practice Location 1

Location 1100 Provena WayBourbonnais, IL 60914-4796 · Phone (773) 564-5070

Other Identifiers 2

Medicaid200397270BIN
Medicaid200397270AIN

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 Buckeye Health Plan, Ambetter from Meridian, 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)

Ludag Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Ludag LLC, which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Ram Narayan, M.D.
Radiation Oncology
NPI 1376954693
200 E 89TH AVE
Merrillville, IN 46410
(219) 738-5598
✔ PECOS✔ Accepts Medicare0.2 mi
Robert Woodburn, MD
Radiation Oncology
NPI 1407848849
8702 BROADWAY
Merrillville, IN 46410
(219) 738-5598
✔ PECOS✔ Accepts Medicare0.4 mi
Marina Kuznetsova, M.D.
Radiation Oncology
NPI 1265545271
100 PROVENA WAY STE 103
Bourbonnais, IL 60914
(773) 564-5070
✔ PECOS34 mi
Lisa Klepczyk, M.D.
Radiation Oncology
NPI 1194986455
1968 PEACHTREE RD NW RADIATION ONCOLOGY DEPT
Atlanta, GA 30309
(404) 605-4227
✔ PECOS✔ Accepts Medicare551 mi

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 Ludag LLC's NPI number?

The NPI number for Ludag LLC is 1336195353. It was assigned to this organization in the NPPES registry on May 25, 2006.

Where is Ludag LLC located?

Ludag LLC is located at 8701 Broadway, Merrillville, IN 46410. The listed phone number is (574) 271-2558.

What is Ludag LLC's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Ludag LLC enrolled in Medicare?

Yes. Ludag LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ludag LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians, all in Radiation Oncology, reassign their Medicare billing to Ludag 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. Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Ludag LLC accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource list Ludag 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 Ludag LLC was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.