BRENNAN MEDICAL CORPORATION
NPI 1619263712
Internal Medicine - Cardiovascular Disease in Watsonville, CA
About Brennan Medical Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRENNAN MEDICAL CORPORATION (NPI 1619263712) is a healthcare organization registered as a cardiovascular disease in Watsonville, California and active in the NPI registry since June 2011. The organization lists Mark Gerard Byrne, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 4
Other Identifiers 1
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)
Brennan Medical Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by December 31, 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.
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Brennan Medical Corporation, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.
Clinicians, nearest first (2)
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 Brennan Medical Corporation's NPI number?
The NPI number for Brennan Medical Corporation is 1619263712. It was assigned to this organization in the NPPES registry on June 27, 2011.
Where is Brennan Medical Corporation located?
Brennan Medical Corporation is located at 30 Brennan St, Watsonville, CA 95076. The listed phone number is (831) 768-0220.
What is Brennan Medical Corporation's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Brennan Medical Corporation enrolled in Medicare?
Yes. Brennan Medical Corporation is registered in the Medicare PECOS enrollment system.
When is Brennan Medical Corporation'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 December 31, 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 Brennan Medical Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Brennan Medical Corporation, in Cardiovascular Disease (Cardiology) and Family Practice. 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, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Brennan Medical Corporation was last updated on June 27, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Brennan Medical Corporation · NPI 1619263712
Cardiovascular Disease organization in Watsonville, California. Organization record, active in the CMS NPPES registry since June 27, 2011.
## Identity
- **NPI:** 1619263712 (Entity type: Organization)
- **Enumerated:** June 27, 2011
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **Organization subpart:** No
- **Authorized official:** Mark Byrne, PRESIDENT
## Practice location
- **Address:** 30 BRENNAN ST, Watsonville, CA 95076-4303
- **Phone:** (831) 768-0220
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** December 31, 2026 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Cardiovascular Disease (Cardiology) (1), Family Practice (1); 2 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 27, 2011
- **Other identifiers:** Medicaid 00G743880 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1619263712) · Data from the CMS NPPES public registry.