DIANNE FERNANDEZ
NPI 1639636426
Nurse Practitioner - Gerontology in Duarte, CA
About Dianne Fernandez NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANNE FERNANDEZ (NPI 1639636426) is an individual gerontology provider in Duarte, California, licensed in California (NP95012196) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).
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 and accepts Medicare assignment
Dianne Fernandez is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Dianne Fernandez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Duarte, CA 91010
- Reassigned Medicare billing, California enrollment
- 1,335 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 91010 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
DUARTE, CA 91010
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 Dianne Fernandez's NPI number?
The NPI number for Dianne Fernandez is 1639636426. It was assigned to this individual provider in the NPPES registry on February 27, 2019.
Where is Dianne Fernandez located?
Dianne Fernandez practices at 1500 Duarte Rd, Duarte, CA 91010. The listed phone number is (626) 256-4673.
What is Dianne Fernandez's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.
Is Dianne Fernandez enrolled in Medicare?
Yes. Dianne Fernandez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Dianne Fernandez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dianne Fernandez reassigns Medicare benefits to City Of Hope Medical Foundation (Duarte, CA). The 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 Dianne Fernandez'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 Dianne Fernandez was last updated on December 11, 2020. 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.
# Dianne Fernandez · NPI 1639636426
Gerontology physician in Duarte, California. Individual provider, active in the CMS NPPES registry since February 27, 2019.
## Identity
- **NPI:** 1639636426 (Entity type: Individual)
- **Enumerated:** February 27, 2019
- **Primary specialty:** Nurse Practitioner - Gerontology · taxonomy 363LG0600X
- **State license:** NP95012196 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 DUARTE RD, Duarte, CA 91010-3012
- **Phone:** (626) 256-4673
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** City Of Hope Medical Foundation (NPI 1871886366, Duarte, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** December 11, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1639636426) · Data from the CMS NPPES public registry.