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DR. ZAHRA SADAT HAMEDI MD
NPI 1053974451
Internal Medicine - Hematology & Oncology in Orange, CA

Active since April 21, 2019PECOS EnrolledAccepts Medicare Assignment
101 THE CITY DR S BLDG 23, ORANGE, CA 92868(714) 456-7890 Get Directions Write a Review

NPPES record last updated: July 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 11, 2025, Jun 23, 2025, Jun 12, 2024 and 2 more (5 updates tracked since 2019).

About Dr. Zahra Sadat Hamedi Md NPPES

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

DR. ZAHRA SADAT HAMEDI MD (NPI 1053974451) is an individual hematology & oncology provider in Orange, California, licensed in California (A200807) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1053974451
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameDR. ZAHRA SADAT HAMEDICredential: MD
Location Address101 THE CITY DR S BLDG 23Orange, CA 92868-3201
Mailing Address101 The City Dr S Bldg 23Orange, CA 92868-3201
Phone(714) 456-7890
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateApril 21, 2019
Last NPPES UpdateJuly 11, 20255 updates tracked since enumeration
NPPES CertifiedJuly 9, 2025
✔ NPI 1053974451 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · A200807
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
101 THE CITY DR S BLDG 23, Orange, CA 92868
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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

Dr. Zahra Sadat Hamedi Md 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.

PECOS PAC ID6002141082
PECOS Enrollment IDI20250917004576
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 Reassignment

Medicare enrollment records show Zahra Sadat Hamedi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Uc Regents
0.3 mi
Allergy & Immunology
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 525 clinicians in this Medicare group
NPI 1003864174 (714) 456-8068

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 92868 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
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
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.

DR. ARASH MAHAJERIN M.D.
Pediatrics (Pediatric Hematology-Oncology)
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (714) 456-8000
JULIE SMITH NP
Internal Medicine (Hematology & Oncology)
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (714) 456-8000
HEEKYUNG KIM
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (949) 819-5969
JINO PARK MD
Radiology (Radiation Oncology)
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (714) 456-5651
REGENTS OF THE UNIVERSITY OF CALIFORNIA
Clinical Medical Laboratory
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (714) 456-5889
DR. ARASH REZAZADEH KALEBASTY M.D.
Internal Medicine (Hematology & Oncology)
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (714) 456-8000
DR. MELISSA LING MAO MD
Surgery (Surgical Oncology)
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (714) 456-8000
DR. MARK E LINSKEY MD
Neurological Surgery
101 THE CITY DR S BLDG 23
ORANGE, CA 92868
Orange County (714) 456-8000

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 Zahra Sadat Hamedi's NPI number?

The NPI number for Zahra Sadat Hamedi is 1053974451. It was assigned to this individual provider in the NPPES registry on April 21, 2019.

Where is Zahra Sadat Hamedi located?

Zahra Sadat Hamedi practices at 101 The City Dr S Bldg 23, Orange, CA 92868. The listed phone number is (714) 456-7890.

What is Zahra Sadat Hamedi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Zahra Sadat Hamedi enrolled in Medicare?

Yes. Zahra Sadat Hamedi 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 Zahra Sadat Hamedi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Zahra Sadat Hamedi reassigns Medicare benefits to Uc Regents (Orange, 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 Zahra Sadat Hamedi'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 Zahra Sadat Hamedi was last updated on July 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.