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DIANE Z. DEFERRANTE MD
NPI 1548337447
Family Medicine - Geriatric Medicine in Baldwin Park, CA

Active since November 29, 2006PECOS Enrolled
1011 BALDWIN PARK BLVD, BALDWIN PARK, CA 91706(626) 851-1011 Get Directions Write a Review

NPPES record last updated: September 23, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Diane Z. Deferrante Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIANE Z. DEFERRANTE MD (NPI 1548337447) is an individual geriatric medicine provider in Baldwin Park, California, licensed in California (A60946) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1548337447
Entity TypeIndividualFemale
Primary Taxonomy207QG0300X
Provider Legal NameDIANE Z. DEFERRANTECredential: MD
Location Address1011 BALDWIN PARK BLVDBaldwin Park, CA 91706-5806
Mailing Address1011 Baldwin Park BlvdBaldwin Park, CA 91706-5806 · (626) 851-1011
Phone(626) 851-1011
Sole ProprietorNo
Enumeration DateNovember 29, 2006
Last NPPES UpdateSeptember 23, 2008
✔ NPI 1548337447 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207QG0300X
License✔ Licensed in CA · A60946
Definition
A family medicine physician with special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes, and the hospital.
1011 BALDWIN PARK BLVD, Baldwin Park, CA 91706
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diane Z. Deferrante Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Diane Deferrante reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Loretto Health And Rehabilitation Center
2,324 mi
Skilled Nursing Facility
700 E BRIGHTON AVE
Syracuse, NY 13205
  • Reassigned Medicare billing, New York enrollment
  • 19 clinicians in this Medicare group
NPI 1588650873 (315) 469-5570
Our Lady Of Lourdes Memorial Hospital Inc.
2,334 mi
General Acute Care Hospital
169 RIVERSIDE DR
Binghamton, NY 13905
  • Reassigned Medicare billing, New York enrollment
  • 386 clinicians in this Medicare group
NPI 1629087580 (607) 798-5111

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 91706 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

BRETT ALLEN PROVENCE D.O.
Hospitalist
1011 BALDWIN PARK BLVD, 4 EAST HOSPITALIST OFFICE
BALDWIN PARK, CA 91706
Los Angeles County (626) 851-1011
VERONICA CHIU TSANG RRT
Respiratory Therapist, Registered
1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706
Los Angeles County (626) 851-7245
DANIEL CHU MD
Family Medicine
1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706
Los Angeles County (833) 574-2273
JULIAN REED WOODS MD
Emergency Medicine
1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706
Los Angeles County (626) 851-1011
HLA H. KYI MD
Pediatrics
1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706
Los Angeles County (626) 851-1011
YU-CHIEN KUO MD
Family Medicine
1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706
Los Angeles County (626) 851-1011
CHRISTINE YI-JING CHEN-HSU MD
Physical Medicine & Rehabilitation
1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706
Los Angeles County (626) 851-1011
DAVID OREN DEWITT PA
Physician Assistant
1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706
Los Angeles County (626) 851-1011

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 Diane Deferrante's NPI number?

The NPI number for Diane Deferrante is 1548337447. It was assigned to this individual provider in the NPPES registry on November 29, 2006.

Where is Diane Deferrante located?

Diane Deferrante practices at 1011 Baldwin Park Blvd, Baldwin Park, CA 91706. The listed phone number is (626) 851-1011.

What is Diane Deferrante's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Geriatric Medicine, with taxonomy code 207QG0300X.

Is Diane Deferrante enrolled in Medicare?

Yes. Diane Deferrante is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Diane Deferrante's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diane Deferrante reassigns Medicare benefits to 2 organizations: Loretto Health And Rehabilitation Center (Syracuse, NY) and Our Lady Of Lourdes Memorial Hospital Inc. (Binghamton, NY). 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 Diane Deferrante's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diane Deferrante accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Diane Deferrante 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 Diane Deferrante was last updated on September 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.