PROVIDER PROFILE · NPI 1417902149

William ChangD.O.

PRACTICEPALOMA MEDICAL GROUP INCSee all providers at this practice →

Pulmonary DiseaseSan Juan Capistrano, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

3,411

Unique beneficiaries

—

Total services

5,736

Distinct HCPCS

Medicare payment

$420K

Peer benchmark

Total Medicare services vs. 901 Pulmonary Disease providers in CA — top quintile (cohort median 927).

PRESCRIBING · PART D · 2024

Total Rx claims

4,635

Beneficiaries

—

Total drug cost

$2.3M

Distinct drugs

Brand share

53.2%

Top prescribed drugs

Albuterol Sulfate745 claims

Fluticasone Propionate423 claims

Fluticasone/Umeclidin/Vilanter325 claims

Azelastine Hcl283 claims

Prednisone227 claims

QUALITY · MIPS · 2024

Final MIPS score

80.2

Quality

59.7

Cost

66.7

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.22%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

REFERRAL NETWORK

Where William 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). 21 inbound referrers · 53 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Steven Sorenson Diagnostic Radiology · Redlands, CA	118	660
Jeffrey Dym Diagnostic Radiology · Laguna Niguel, CA	108	416
Navid Jahed Diagnostic Radiology · Mission Viejo, CA	82	313
Unilab Corporation Clinical Laboratory · West Hills, CA	81	363
Jackson Penry Diagnostic Radiology · Mission Viejo, CA	71	272
Rahul Kale Pulmonary Disease · San Juan Capistrano, CA	62	220
Michael Rovzar Pulmonary Disease · San Juan Capistrano, CA	62	279
HERREN ENTERPRISES INC	56	170
Brett Wertman Cardiology · Mission Viejo, CA	54	217
SADDLEBACK MEMORIAL MEDICAL CENTER	50	205
Tze Ip Cardiology · Mission Viejo, CA	40	118
Absalom Hepner Cardiology · Mission Viejo, CA	33	125

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
MISSION HOSPITAL REGIONAL MEDICAL CENTER	181	667
Sanjivan Kohli Pulmonary Disease · San Juan Capistrano, CA	107	475
Michael Rovzar Pulmonary Disease · San Juan Capistrano, CA	84	315
Jeffrey Dym Diagnostic Radiology · Laguna Niguel, CA	84	354
Rahul Kale Pulmonary Disease · San Juan Capistrano, CA	79	262
Steven Sorenson Diagnostic Radiology · Redlands, CA	77	522
Jason Pang Nephrology · Laguna Hills, CA	74	496
Unilab Corporation Clinical Laboratory · West Hills, CA	71	366
Navid Jahed Diagnostic Radiology · Mission Viejo, CA	63	266
Andrew Breiterman Diagnostic Radiology · Mission Viejo, CA	54	254
CALIFORNIA LABORATORY SCIENCES LLC	54	382
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	49	298

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