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DR. GEOFFREY CARSON CHENG MD
NPI 1003307687
Pediatrics - Pediatric Hematology-Oncology in Orange, CA

Active since May 19, 2018PECOS Enrolled
1201 W LA VETA AVE, ORANGE, CA 92868(714) 509-8636(714) 509-8699 Get Directions Write a Review

NPPES record last updated: February 20, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 8, 2018, May 19, 2018 (2 updates tracked since 2018).

About Dr. Geoffrey Carson Cheng Md NPPES

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

DR. GEOFFREY CARSON CHENG MD (NPI 1003307687) is an individual pediatric hematology-oncology provider in Orange, California, licensed in California (A174657) and active in the NPI registry since May 2018. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003307687
Entity TypeIndividualMale
Primary Taxonomy2080P0207X
Provider Legal NameDR. GEOFFREY CARSON CHENGCredential: MD
Location Address1201 W LA VETA AVEOrange, CA 92868-4203
Mailing Address1201 W La Veta AveOrange, CA 92868-4203 · (714) 509-8636 · Fax (714) 509-8699
Phone(714) 509-8636
Fax(714) 509-8699
Sole ProprietorNo
Enumeration DateMay 19, 2018
Last NPPES UpdateFebruary 20, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 20, 2026
✔ NPI 1003307687 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in CA · A174657
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
1201 W LA VETA AVE, 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 (PECOS)

Dr. Geoffrey Carson Cheng 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

3

Medicare enrollment records show Geoffrey Cheng reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Pediatrics Associates
377 mi
Pediatrics
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 1,159 clinicians in this Medicare group
NPI 1376614016 (415) 353-2000
University Of California San Francisco
377 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
377 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

TRISHA JACKSON
Social Worker
1201 W LA VETA AVE
ORANGE, CA 92868
Orange County (714) 509-8521
CHILDREN'S HOSPITAL OF ORANGE COUNTY
Neurological Surgery
1201 W LA VETA AVE
ORANGE, CA 92868
Orange County (714) 509-8649
JULIAN THOMAS MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
1201 W LA VETA AVE
ORANGE, CA 92868
Orange County (714) 509-7601
BRIANNA JOY LEYDEN
Student in an Organized Health Care Education/Training Program
1201 W LA VETA AVE
ORANGE, CA 92868
Orange County (714) 997-3000
DR. MARNI CARMELA SWITKIN NAGEL PH.D.
Psychologist (Clinical Child & Adolescent)
1201 W LA VETA AVE, 503
ORANGE, CA 92868
Orange County (714) 532-8481
DR. DAINA DREIMANE MD
Pediatrics (Pediatric Endocrinology)
1201 W LA VETA AVE
ORANGE, CA 92868
Orange County (888) 770-2462
DR. SHARIEF KHALIL TARAMAN M.D.
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
1201 W LA VETA AVE, CHILDREN'S HOSPITAL OF ORANGE COUNTY, NEUROLOGY
ORANGE, CA 92868
Orange County (714) 509-7601
ALONDRA BERENISE SERRANO PHD
Psychologist
1201 W LA VETA AVE
ORANGE, CA 92868
Orange County (714) 509-8481

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 Geoffrey Cheng's NPI number?

The NPI number for Geoffrey Cheng is 1003307687. It was assigned to this individual provider in the NPPES registry on May 19, 2018.

Where is Geoffrey Cheng located?

Geoffrey Cheng practices at 1201 W La Veta Ave, Orange, CA 92868. The listed phone number is (714) 509-8636.

What is Geoffrey Cheng's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Is Geoffrey Cheng enrolled in Medicare?

Yes. Geoffrey Cheng is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Geoffrey Cheng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Geoffrey Cheng reassigns Medicare benefits to 3 organizations: Ucsf Pediatrics Associates (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, 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 Geoffrey Cheng'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 Geoffrey Cheng was last updated on February 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.