JOHN D MCCARTHY
NPI 1336207745
Internal Medicine - Infectious Disease in Whittier, CA
About John D Mccarthy NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN D MCCARTHY (NPI 1336207745) is a healthcare organization registered as an infectious disease in Whittier, California and active in the NPI registry since December 2006. The organization lists John D Mccarthy, Physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
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)
John D Mccarthy 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 John D Mccarthy, 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 John D Mccarthy's NPI number?
The NPI number for John D Mccarthy is 1336207745. It was assigned to this organization in the NPPES registry on December 5, 2006.
Where is John D Mccarthy located?
John D Mccarthy is located at 15141 Whittier Blvd Ste 360, Whittier, CA 90603. The listed phone number is (626) 912-5767.
What is John D Mccarthy's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is John D Mccarthy enrolled in Medicare?
Yes. John D Mccarthy is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through John D Mccarthy?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Infectious Disease) reassigns their Medicare billing to John D Mccarthy. 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 John D Mccarthy was last updated on February 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# John D Mccarthy · NPI 1336207745
Infectious Disease organization in Whittier, California. Organization record, active in the CMS NPPES registry since December 5, 2006.
## Identity
- **NPI:** 1336207745 (Entity type: Organization)
- **Enumerated:** December 5, 2006
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **Organization subpart:** No
- **Authorized official:** John Mccarthy, PHYSICIAN
## Practice location
- **Address:** 15141 WHITTIER BLVD STE 360, Whittier, CA 90603-2184
- **Phone:** (626) 912-5767 · **Fax:** (562) 360-1443
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Infectious Disease) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 15, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1336207745) · Data from the CMS NPPES public registry.