MEDICAL DIAGNOSTIC SERVICES INC
NPI 1922260181
Radiology - Diagnostic Radiology in Indianapolis, IN
About Medical Diagnostic Services Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MEDICAL DIAGNOSTIC SERVICES INC (NPI 1922260181) is a healthcare organization registered as a diagnostic radiology in Indianapolis, Indiana and active in the NPI registry since June 2008. The organization lists Shams U. Siddiqui, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 4
Other Identifiers 2
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Medical Diagnostic Services Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by January 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
7Medicare enrollment records show 7 clinicians reassign Medicare billing to Medical Diagnostic Services Inc, which bills Medicare for the services they deliver. They are listed nearest first.
Clinicians, nearest first (7)
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 Medical Diagnostic Services Inc's NPI number?
The NPI number for Medical Diagnostic Services Inc is 1922260181. It was assigned to this organization in the NPPES registry on June 30, 2008.
Where is Medical Diagnostic Services Inc located?
Medical Diagnostic Services Inc is located at 8007 S Meridian St, Indianapolis, IN 46217. The listed phone number is (317) 881-9600.
What is Medical Diagnostic Services Inc's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Medical Diagnostic Services Inc enrolled in Medicare?
Yes. Medical Diagnostic Services Inc is registered in the Medicare PECOS enrollment system.
When is Medical Diagnostic Services Inc's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Indiana, Clinic/Group Practice) is due for revalidation by January 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Medical Diagnostic Services Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians, all in Diagnostic Radiology, reassign their Medicare billing to Medical Diagnostic Services Inc. 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 Medical Diagnostic Services Inc was last updated on September 28, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Medical Diagnostic Services Inc · NPI 1922260181
Diagnostic Radiology organization in Indianapolis, Indiana. Organization record, active in the CMS NPPES registry since June 30, 2008.
## Identity
- **NPI:** 1922260181 (Entity type: Organization)
- **Enumerated:** June 30, 2008
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **Organization subpart:** Yes (part of Medical Diagnostic Services Inc)
- **Authorized official:** Shams Siddiqui, PRESIDENT
## Practice location
- **Address:** 8007 S MERIDIAN ST, Indianapolis, IN 46217-2901
- **Phone:** (317) 881-9600 · **Fax:** (317) 881-9605
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** January 31, 2027 (Non-DME Part B, Indiana, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 7 clinicians (Diagnostic Radiology) reassign Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 28, 2018
- **Other identifiers:** Medicaid 200887330 (IN); Other DN8477 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1922260181) · Data from the CMS NPPES public registry.