What is Hamilton Chen's specialty?

Hamilton Chen (NPI 1700019528) is a Medicare-billing provider whose primary specialty is Physical Medicine and Rehabilitation in Riverside, CA.

Where does Hamilton Chen practice?

Hamilton Chen practices in Riverside, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1700019528.

How much does Medicare pay Hamilton Chen?

Hamilton Chen (NPI 1700019528) received approximately $153K in total Medicare Part B payments, serving 288 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1700019528

Hamilton ChenMD

Physical Medicine and RehabilitationRiverside, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

862

Unique beneficiaries

—

Total services

3,117

Distinct HCPCS

Medicare payment

$132K

Peer benchmark

Total Medicare services vs. 710 Physical Medicine and Rehabilitation providers in CA — above median (cohort median 1,331).

PRESCRIBING · PART D · 2024

Total Rx claims

3,093

Beneficiaries

—

Total drug cost

$89K

Distinct drugs

Brand share

29.8%

Top prescribed drugs

Hydrocodone/Acetaminophen562 claims

Gabapentin437 claims

Cyclobenzaprine Hcl224 claims

Tramadol Hcl211 claims

Celecoxib176 claims

QUALITY · MIPS · 2024

Final MIPS score

75.0

Quality

0.0

Cost

0.0

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

0.00%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$809

Payment records

By payment type

Food and Beverage$809

Top paying entities

Food and Beverage$809

REFERRAL NETWORK

Where Hamilton Chen'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). 10 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
RIVERSIDE HEALTHCARE SYSTEM, L.P.	43	141
Unilab Corporation Clinical Laboratory · West Hills, CA	20	70
Ardavan Afshar Diagnostic Radiology · Riverside, CA	19	54
Michael Reid Certified Registered Nurse Anesthetist (CRNA) · Colton, CA	19	52
Darren Freeman Physical Medicine and Rehabilitation · Encino, CA	17	28
Phamatech Incorporated Clinical Laboratory · San Diego, CA	16	34
Shareef Riad Diagnostic Radiology · San Diego, CA	14	35
Andro Sharobiem Internal Medicine · Riverside, CA	13	82
Thomas Haider Orthopedic Surgery · Riverside, CA	11	105
Dennis Cramer Neurosurgery · Riverside, CA	11	30

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