What is Douglas Chang's specialty?

Douglas Chang (NPI 1962450031) is a Medicare-billing provider whose primary specialty is Orthopedic Surgery in San Diego, CA.

Where does Douglas Chang practice?

Douglas Chang practices in San Diego, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1962450031.

How much does Medicare pay Douglas Chang?

Douglas Chang (NPI 1962450031) received approximately $85K in total Medicare Part B payments, serving 562 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1962450031

Douglas ChangM.D

PRACTICEUCSDSee all providers at this practice →

Orthopedic SurgerySan Diego, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

896

Unique beneficiaries

—

Total services

1,221

Distinct HCPCS

Medicare payment

$79K

Peer benchmark

Total Medicare services vs. 1,921 Orthopedic Surgery providers in CA — above median (cohort median 1,100).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$138

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Gabapentin23 claims

QUALITY · MIPS · 2024

Final MIPS score

90.8

Quality

84.1

Cost

73.9

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.66%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

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). 8 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
REGENTS OF THE UNIVERSITY OF CALIFORNIA	335	2,141
Brady Huang Diagnostic Radiology · San Diego, CA	54	150
Edward Smitaman Diagnostic Radiology · San Diego, CA	51	144
Evelyne Fliszar Diagnostic Radiology · San Diego, CA	38	117
Gregory Middleton Rheumatology · La Jolla, CA	18	80
Unilab Corporation Clinical Laboratory · West Hills, CA	16	48
Vinko Zlomislic Orthopedic Surgery · San Diego, CA	16	39
Richard Lin Orthopedic Surgery · Fountain Valley, CA	12	31

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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