JOHN FREDERICK MULLEN FNP-C
NPI 1346658390
Nurse Practitioner - Family in Redwood City, CA
About John Frederick Mullen Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN FREDERICK MULLEN FNP-C (NPI 1346658390) is an individual family provider in Redwood City, California, licensed in California (95000657) and active in the NPI registry since July 2014. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Frederick Mullen Fnp-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Mullen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fresno, CA 93711
- Reassigned Medicare billing, California enrollment
- 508 clinicians in this Medicare group
Hanford, CA 93230
- Reassigned Medicare billing, California enrollment
- 184 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94063 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Mullen's NPI number?
The NPI number for John Mullen is 1346658390. It was assigned to this individual provider in the NPPES registry on July 22, 2014.
Where is John Mullen located?
John Mullen practices at 1181 Marsh Rd, Redwood City, CA 94063. The listed phone number is (619) 280-1967.
What is John Mullen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is John Mullen enrolled in Medicare?
Yes. John Mullen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Mullen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Mullen reassigns Medicare benefits to 2 organizations: Community Foundation Medical Group (Fresno, CA) and Kaweah Delta Health Care District (Hanford, CA). Each 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 John Mullen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Mullen was last updated on July 5, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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 Frederick Mullen, FNP-C · NPI 1346658390
Family physician in Redwood City, California. Individual provider, active in the CMS NPPES registry since July 22, 2014.
## Identity
- **NPI:** 1346658390 (Entity type: Individual)
- **Enumerated:** July 22, 2014
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95000657 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1181 MARSH RD, Redwood City, CA 94063-4432
- **Phone:** (619) 280-1967
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Community Foundation Medical Group (NPI 1003329491, Fresno, CA); Kaweah Delta Health Care District (NPI 1437915808, Hanford, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 5, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1346658390) · Data from the CMS NPPES public registry.