What is Douglas Chang's specialty?

Douglas Chang (NPI 1295766889) is a Medicare-billing provider whose primary specialty is Neurology in Foothill Ranch, CA.

Where does Douglas Chang practice?

Douglas Chang practices in Foothill Ranch, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1295766889.

How much does Medicare pay Douglas Chang?

Douglas Chang (NPI 1295766889) received approximately $19K in total Medicare Part B payments, serving 62 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1295766889

Douglas ChangM.D.

NeurologyFoothill Ranch, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

150

Unique beneficiaries

—

Total services

239

Distinct HCPCS

Medicare payment

$18K

Peer benchmark

Total Medicare services vs. 1,670 Neurology providers in CA — below median (cohort median 581).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050230

Hospital

REFERRAL NETWORK

Where Douglas Chang's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 6 inbound referrers · 13 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Reza Shahbaz Diagnostic Radiology · Orange, CA	71	139
Asaad Hakim Pulmonary Disease · Garden Grove, CA	24	67
Harpreet Singh Cardiology · Fountain Valley, CA	21	23
Naser Rahbar Diagnostic Radiology · Anaheim, CA	19	26
HUNG NGUYEN, M.D., INC.	14	18
True Mcmahan Emergency Medicine · Laguna Beach, CA	11	16

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Reza Shahbaz Diagnostic Radiology · Orange, CA	46	86
PRIME HEALTHCARE SERVICES - GARDEN GROVE LLC	31	44
Kan-Di-Ki Llc Portable X-Ray Supplier · North Hollywood, CA	21	79
Asaad Hakim Pulmonary Disease · Garden Grove, CA	21	46
Clarence Coleman Diagnostic Radiology · Edina, MN	19	30
Chaewon Song Internal Medicine · Garden Grove, CA	14	46
Symons Emergency Specialties, Inc. Ambulance Service Provider · Bishop, CA	14	17
SOUTHLAND AMBULANCE LLC	13	13
Naser Rahbar Diagnostic Radiology · Anaheim, CA	13	16
Essam Mostafa Nephrology · Fountain Valley, CA	13	22
Elizabeth Nghiem Infectious Disease · Fountain Valley, CA	13	30
Falck Mobile Health Corp Ambulance Service Provider · Orange, CA	13	19

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events