TYLER BASEN MD INC
NPI 1598374456
Internal Medicine - Allergy & Immunology in Mission Viejo, CA
About Tyler Basen Md Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TYLER BASEN MD INC (NPI 1598374456) is a healthcare organization registered as an allergy & immunology in Mission Viejo, California and active in the NPI registry since July 2020. The organization lists Tyler Basen, Allergist, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tyler Basen Md Inc 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 Tyler Basen MD Inc, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Tyler Basen MD Inc's NPI number?
The NPI number for Tyler Basen MD Inc is 1598374456. It was assigned to this organization in the NPPES registry on July 27, 2020.
Where is Tyler Basen MD Inc located?
Tyler Basen MD Inc is located at 26691 Plaza Ste 170, Mission Viejo, CA 92691. The listed phone number is (949) 755-6414.
What is Tyler Basen MD Inc's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.
Is Tyler Basen MD Inc enrolled in Medicare?
Yes. Tyler Basen MD Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Tyler Basen MD Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Allergy/Immunology) reassigns their Medicare billing to Tyler Basen MD 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 Tyler Basen MD Inc was last updated on July 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Tyler Basen Md Inc · NPI 1598374456
Allergy & Immunology organization in Mission Viejo, California. Organization record, active in the CMS NPPES registry since July 27, 2020.
## Identity
- **NPI:** 1598374456 (Entity type: Organization)
- **Enumerated:** July 27, 2020
- **Primary specialty:** Internal Medicine - Allergy & Immunology · taxonomy 207RA0201X
- **Organization subpart:** No
- **Authorized official:** Tyler Basen, ALLERGIST
## Practice location
- **Address:** 26691 PLAZA STE 170, Mission Viejo, CA 92691-6396
- **Phone:** (949) 755-6414 · **Fax:** (339) 207-0457
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Allergy/Immunology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 27, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1598374456) · Data from the CMS NPPES public registry.