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RNY MEDICARE LTD
NPI 1538473640
Internal Medicine in Chicago, IL

Active since July 30, 2010
725 W MONTROSE AVE, CHICAGO, IL 60613(773) 929-1700 Get Directions Write a Review

NPPES record last updated: January 20, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Rny Medicare Ltd NPPES

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

RNY MEDICARE LTD (NPI 1538473640) is a healthcare organization registered as an internal medicine in Chicago, Illinois and active in the NPI registry since July 2010. The organization lists Ahmed Raziuddin, Owner, as its authorized official.

NPPES Registry Identity

NPI1538473640
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameRNY MEDICARE LTD
Location Address725 W MONTROSE AVEChicago, IL 60613-1515
Mailing AddressPo Box 26975Jacksonville, FL 32226-6975 · (904) 503-1132 · Fax (888) 886-4464
Phone(773) 929-1700
Organization SubpartNo
Authorized OfficialAhmed RaziuddinOwner · (773) 218-5355
Enumeration DateJuly 30, 2010
Last NPPES UpdateJanuary 20, 2026
NPPES CertifiedJanuary 20, 2026
✔ NPI 1538473640 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.
725 W MONTROSE AVE, Chicago, IL 60613
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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)

Rny Medicare Ltd 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 Rny Medicare Ltd, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ahmed Raziuddin, M.D.
Emergency Medicine
NPI 1578513602
1430 SANDERS RD
Northbrook, IL 60062
(773) 989-9790
✔ PECOS✔ Accepts Medicare16 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 Rny Medicare Ltd's NPI number?

The NPI number for Rny Medicare Ltd is 1538473640. It was assigned to this organization in the NPPES registry on July 30, 2010.

Where is Rny Medicare Ltd located?

Rny Medicare Ltd is located at 725 W Montrose Ave, Chicago, IL 60613. The listed phone number is (773) 929-1700.

What is Rny Medicare Ltd's specialty?

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

Is Rny Medicare Ltd enrolled in Medicare?

Yes. Rny Medicare Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Rny Medicare Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Emergency Medicine) reassigns their Medicare billing to Rny Medicare Ltd. 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 Rny Medicare Ltd was last updated on January 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.