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DIAGNOSTIC MEDICINE P.C.
NPI 1255439022
Internal Medicine - Critical Care Medicine in Plymouth, IN

Active since September 20, 2006CLIA 15D2268760 · Waiver
113 N MICHIGAN ST, PLYMOUTH, IN 46563(574) 250-3178(574) 250-3178 Get Directions Write a Review

NPPES record last updated: June 28, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 16, 2022, Aug 18, 2022 (2 updates tracked since 2022).

About Diagnostic Medicine P.c. NPPES

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

DIAGNOSTIC MEDICINE P.C. (NPI 1255439022) is a healthcare organization registered as a critical care medicine in Plymouth, Indiana and active in the NPI registry since September 2006. The organization holds a CLIA Waiver certificate valid through September 15, 2028 and lists Londa Aldridge, Partner, as its authorized official.

NPPES Registry Identity

NPI1255439022
Entity TypeOrganization
Primary Taxonomy207RC0200X
Legal Business NameDIAGNOSTIC MEDICINE P.C.
Location Address113 N MICHIGAN STPlymouth, IN 46563-2132
Mailing Address113 N Michigan StPlymouth, IN 46563-2132 · (574) 936-2643 · Fax (574) 540-4001
Phone(574) 250-3178
Fax(574) 250-3178
Organization SubpartNo
Authorized OfficialLonda AldridgePartner · (574) 936-2643
Enumeration DateSeptember 20, 2006
Last NPPES UpdateJune 28, 20232 updates tracked since enumeration
NPPES CertifiedJune 28, 2023
✔ NPI 1255439022 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in IN · 50004231
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
113 N MICHIGAN ST, Plymouth, IN 46563
Open in Google Maps ↗

Other Identifiers 2

Other110207420IN · Medicare Railroad
Medicaid200281260IN

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource.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)

Diagnostic Medicine P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Diagnostic Medicine P.C., which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (3)

Londa Aldridge, FNP
Nurse Practitioner
NPI 1750805131
113 N MICHIGAN ST
Plymouth, IN 46563
(574) 936-2643
✔ PECOS✔ Accepts MedicareSame address
Alissa Whittaker, FNP
Nurse Practitioner
NPI 1033540638
113 N MICHIGAN ST
Plymouth, IN 46563
(574) 936-2643
✔ PECOS✔ Accepts Medicare0.1 mi
James Aldridge, D.O.
Internal Medicine
NPI 1710085550
1400 E 9TH ST
Rochester, IN 46975
(574) 223-2020
✔ PECOS✔ Accepts Medicare20 mi

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 15D2268760

Diagnostic Medicine PC · Plymouth, IN
Active · expires Sep 15, 2028
CLIA Number15D2268760
Laboratory TypePhysician Office
Certificate Effective DateSeptember 16, 2026
Certificate Expiration DateSeptember 15, 2028
Laboratory DirectorLonda L. Aldridge
Laboratory Phone(574) 936-2643
Laboratory LocationDiagnostic Medicine PC113 N Michigan St, Plymouth, IN 46563
CLIA data matches this NPI record on: Address 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 Diagnostic Medicine P.C.'s NPI number?

The NPI number for Diagnostic Medicine P.C. is 1255439022. It was assigned to this organization in the NPPES registry on September 20, 2006.

Where is Diagnostic Medicine P.C. located?

Diagnostic Medicine P.C. is located at 113 N Michigan St, Plymouth, IN 46563. The listed phone number is (574) 250-3178.

What is Diagnostic Medicine P.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Diagnostic Medicine P.C. enrolled in Medicare?

Yes. Diagnostic Medicine P.C. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Diagnostic Medicine P.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Diagnostic Medicine P.C., in Internal Medicine and Nurse Practitioner. 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, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Diagnostic Medicine P.C. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 15D2268760) is associated with this NPI, valid through September 15, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Diagnostic Medicine P.C. accept?

Health plans from Anthem Blue Cross and Blue Shield and CareSource list Diagnostic Medicine P.C. 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 Diagnostic Medicine P.C. was last updated on June 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.