CAREN MARIE PFIEFFER NP-C
NPI 1124469085
Nurse Practitioner - Family in Palo Alto, CA
About Caren Marie Pfieffer Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAREN MARIE PFIEFFER NP-C (NPI 1124469085) is an individual family provider in Palo Alto, California, licensed in California (95008587) and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Caren Marie Pfieffer Np-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Caren Pfieffer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glendale, AZ 85306
- Reassigned Medicare billing, Arizona enrollment
- 251 clinicians in this Medicare group
Phoenix, AZ 85037
- Reassigned Medicare billing, Arizona enrollment
- Medicare enrollment name: Jewish Family & Childrens Service
- 136 clinicians in this Medicare group
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 1,490 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 94306 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PALO ALTO, CA 94306
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 Caren Pfieffer's NPI number?
The NPI number for Caren Pfieffer is 1124469085. It was assigned to this individual provider in the NPPES registry on July 8, 2013.
Where is Caren Pfieffer located?
Caren Pfieffer practices at 195 Page Mill Rd Ste 103, Palo Alto, CA 94306. The listed phone number is (888) 731-8994.
What is Caren Pfieffer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Caren Pfieffer enrolled in Medicare?
Yes. Caren Pfieffer is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Caren Pfieffer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caren Pfieffer reassigns Medicare benefits to 3 organizations: Summit Medical Group Arizona LLC (Glendale, AZ), Jewish Family & Children's Service (Phoenix, AZ) and District Medical Group, Inc (Phoenix, AZ). 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 Caren Pfieffer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Caren Pfieffer accept?
Health plans from Highmark Blue Cross Blue Shield Delaware list Caren Pfieffer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Caren Pfieffer was last updated on May 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Caren Marie Pfieffer, NP-C · NPI 1124469085
Family physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since July 8, 2013.
## Identity
- **NPI:** 1124469085 (Entity type: Individual)
- **Enumerated:** July 8, 2013
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95008587 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 195 PAGE MILL RD STE 103, Palo Alto, CA 94306-2073
- **Phone:** (888) 731-8994
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Summit Medical Group Arizona LLC (NPI 1053810622, Glendale, AZ); Jewish Family & Children's Service (NPI 1801103841, Phoenix, AZ); District Medical Group, Inc (NPI 1700119815, Phoenix, AZ) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124469085) · Data from the CMS NPPES public registry.