PROVIDER PROFILE · NPI 1689606790

James ChapmanDO

PRACTICEDAVID CHANG, MD, INCSee all providers at this practice →

Emergency MedicineLakewood, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

610

Unique beneficiaries

—

Total services

658

Distinct HCPCS

Medicare payment

$61K

Peer benchmark

Total Medicare services vs. 5,287 Emergency Medicine providers in CA — top quintile (cohort median 355).

PRESCRIBING · PART D · 2024

Total Rx claims

346

Beneficiaries

—

Total drug cost

$2K

Distinct drugs

Brand share

30.9%

Top prescribed drugs

Naproxen87 claims

Cephalexin73 claims

Ondansetron72 claims

Dicyclomine Hcl28 claims

Hydrocodone/Acetaminophen23 claims

QUALITY · MIPS · 2024

Final MIPS score

96.7

Quality

90.0

Cost

78.4

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.91%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where James Chapman'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). 36 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
UNIVERSITY OF CALIFORNIA IRVINE	655	1,596
Unilab Corporation Clinical Laboratory · West Hills, CA	66	184
Valerie Mehl Nurse Practitioner · Torrance, CA	34	39
NPI 1255335535	31	62
Shivanand Pole Internal Medicine · Los Alamitos, CA	31	111
Geoffrey Delaurier Emergency Medicine · Los Alamitos, CA	28	75
Courtney Washington Emergency Medicine · Los Angeles, CA	27	57
William Madrid Cardiology · Lakewood, CA	26	78
Jesse Licuanan Internal Medicine · Lakewood, CA	25	93
Christopher Bowns Emergency Medicine · Bakersfield, CA	25	47
AMERICARE MEDSERVICES INC.	25	42
Erin Prince Emergency Medicine · Camden, NJ	23	51

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