What is James Chapman's specialty?

James Chapman (NPI 1689606790) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Lakewood, CA.

Where does James Chapman practice?

James Chapman practices in Lakewood, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1689606790.

How much does Medicare pay James Chapman?

James Chapman (NPI 1689606790) received approximately $64K in total Medicare Part B payments, serving 371 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events