What is Robert Siew's specialty?

Robert Siew (NPI 1578539516) is a Medicare-billing provider whose primary specialty is Internal Medicine in Pasadena, CA.

Where does Robert Siew practice?

Robert Siew practices in Pasadena, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1578539516.

How much does Medicare pay Robert Siew?

Robert Siew (NPI 1578539516) received approximately $259K in total Medicare Part B payments, serving 742 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1578539516

Robert SiewM.D.

PRACTICEROBERT SIEW MD A MEDICAL CORPORATIONSee all providers at this practice →

Internal MedicinePasadena, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,507

Unique beneficiaries

—

Total services

3,643

Distinct HCPCS

Medicare payment

$257K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

1,875

Beneficiaries

—

Total drug cost

$222K

Distinct drugs

Brand share

26.7%

Top prescribed drugs

Apixaban160 claims

Atorvastatin Calcium138 claims

Amlodipine Besylate125 claims

Lisinopril76 claims

Carvedilol75 claims

QUALITY · MIPS · 2024

Final MIPS score

75.0

Quality

0.0

Cost

71.8

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

0.00%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$338

Payment records

By payment type

Food and Beverage$338

Top paying entities

Food and Beverage$338

REFERRAL NETWORK

Where Robert Siew'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). 126 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PASADENA HOSPITAL ASSOCIATION, LTD	634	2,292
Warren Lam Diagnostic Radiology · Pasadena, CA	263	1,068
Andy Wang Diagnostic Radiology · Pasadena, CA	162	440
City Of Pasadena Ambulance Service Provider · Pasadena, CA	160	514
Unilab Corporation Clinical Laboratory · West Hills, CA	158	550
LIS, LEON	141	569
Jose Tandoc Diagnostic Radiology · Arcadia, CA	125	538
Primex Clinical Laboratories Inc. Clinical Laboratory · Van Nuys, CA	117	367
Richard Reed Diagnostic Radiology · Pasadena, CA	106	330
CALIFORNIA CONVALESCENT HOSPITAL OF PASADENA INC	101	492
Christopher Hedley Diagnostic Radiology · Pasadena, CA	90	236
Wilson Wong Diagnostic Radiology · Arcadia, CA	89	331

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