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THOMAS LUDEMA MD
NPI 1629153143
Specialist in Aliso Viejo, CA

Active since October 25, 2006
24502 PACIFIC PARK DR STE 102, ALISO VIEJO, CA 92656(949) 365-8877(949) 365-8878 Get Directions Write a Review

NPPES record last updated: March 31, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 31, 2026, Dec 15, 2025 (2 updates tracked since 2025).

About Thomas Ludema Md NPPES

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

THOMAS LUDEMA MD (NPI 1629153143) is a healthcare organization registered as a specialist in Aliso Viejo, California and active in the NPI registry since October 2006. The organization lists Thomas Ludema, Owner, as its authorized official.

NPPES Registry Identity

NPI1629153143
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameTHOMAS LUDEMA MD
Location Address24502 PACIFIC PARK DR STE 102Aliso Viejo, CA 92656-3033
Mailing Address27800 Medical Center Rd, Suite 263Mission Viejo, CA 92691-6447 · (949) 365-8877 · Fax (949) 365-8878
Phone(949) 365-8877
Fax(949) 365-8878
Organization SubpartNo
Authorized OfficialThomas LudemaOwner · (949) 365-8877
Enumeration DateOctober 25, 2006
Last NPPES UpdateMarch 31, 20262 updates tracked since enumeration
NPPES CertifiedMarch 31, 2026
✔ NPI 1629153143 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
24502 PACIFIC PARK DR STE 102, Aliso Viejo, CA 92656
Open in Google Maps ↗

Other Identifiers 1

Medicaid00G531350CA

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas Ludema Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

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.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20041110001225Non-DME Part B · Clinic/Group PracticeDue dateNovember 30, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Thomas Ludema MD, which bills Medicare for the services this clinician delivers.

Clinician (1)

Thomas Ludema, MD
Neurology
NPI 1316953243
24502 PACIFIC PARK DR STE 102
Aliso Viejo, CA 92656
(949) 365-8877
✔ 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 Thomas Ludema MD's NPI number?

The NPI number for Thomas Ludema MD is 1629153143. It was assigned to this organization in the NPPES registry on October 25, 2006.

Where is Thomas Ludema MD located?

Thomas Ludema MD is located at 24502 Pacific Park Dr Ste 102, Aliso Viejo, CA 92656. The listed phone number is (949) 365-8877.

What is Thomas Ludema MD's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Thomas Ludema MD enrolled in Medicare?

Yes. Thomas Ludema MD is registered in the Medicare PECOS enrollment system.

When is Thomas Ludema MD'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 (California, Clinic/Group Practice) is due for revalidation by November 30, 2026. 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 Thomas Ludema MD?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Neurology) reassigns their Medicare billing to Thomas Ludema MD. 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 Thomas Ludema MD was last updated on March 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.