PROVIDER PROFILE · NPI 1134375272

Perkin ShiuMD

PRACTICEJOHN MUIR PHYSICIAN NETWORKSee all providers at this practice →

CardiologyWalnut Creek, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

5,579

Unique beneficiaries

—

Total services

8,898

Distinct HCPCS

Medicare payment

$595K

Peer benchmark

Total Medicare services vs. 1,869 Cardiology providers in CA — top quintile (cohort median 2,371).

PRESCRIBING · PART D · 2024

Total Rx claims

7,395

Beneficiaries

—

Total drug cost

$2.4M

Distinct drugs

Brand share

29.8%

Top prescribed drugs

Apixaban894 claims

Atorvastatin Calcium776 claims

Metoprolol Succinate729 claims

Rosuvastatin Calcium601 claims

Losartan Potassium421 claims

QUALITY · MIPS · 2024

Final MIPS score

90.3

Quality

89.5

Cost

74.3

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.64%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$4K

Payment records

100

By payment type

Food and Beverage$3K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2K

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (3)

CCN 050180

Hospital

CCN 050496

Hospital

CCN 050689

Hospital

REFERRAL NETWORK

Where Perkin Shiu'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). 91 inbound referrers · 183 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Jonathan Posin Diagnostic Radiology · Walnut Creek, CA	80	164
Michael Brown Cardiology · Walnut Creek, CA	74	156
Sunil Gandhi Diagnostic Radiology · Walnut Creek, CA	73	161
Angelo Crudale Diagnostic Radiology · Walnut Creek, CA	73	157
Andrew Dublin Interventional Cardiology · Walnut Creek, CA	69	147
Carolyn Lacey Cardiology · Walnut Creek, CA	68	187
Amy Lai Diagnostic Radiology · New York, NY	68	126
Kimberly Blumberg Diagnostic Radiology · Walnut Creek, CA	60	132
Hennessey Tseng Cardiology · Walnut Creek, CA	53	160
JOHN MUIR HEALTH	48	78
Eric Chen Interventional Radiology · Los Angeles, CA	47	78
Ramin Khashayar Pulmonary Disease · Walnut Creek, CA	45	204

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
JOHN MUIR HEALTH	527	1,146
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	376	1,233
American Medical Response West Ambulance Service Provider · Concord, CA	110	162
JOHN MUIR HEALTH	103	332
William Hoddick Diagnostic Radiology · Walnut Creek, CA	89	255
Andrew Dublin Interventional Cardiology · Walnut Creek, CA	88	261
Amy Lai Diagnostic Radiology · New York, NY	87	170
Jonathan Posin Diagnostic Radiology · Walnut Creek, CA	87	212
Angelo Crudale Diagnostic Radiology · Walnut Creek, CA	82	171
Carolyn Lacey Cardiology · Walnut Creek, CA	80	285
Irhythm Technologies, Inc. Independent Diagnostic Testing Facility (IDTF) · San Francisco, CA	78	153
Kimberly Blumberg Diagnostic Radiology · Walnut Creek, CA	77	156

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