What is Mark Tsai's specialty?

Mark Tsai (NPI 1225033111) is a Medicare-billing provider whose primary specialty is Internal Medicine in Paramount, CA.

Where does Mark Tsai practice?

Mark Tsai practices in Paramount, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1225033111.

How much does Medicare pay Mark Tsai?

Mark Tsai (NPI 1225033111) received approximately $56K in total Medicare Part B payments, serving 211 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1225033111

Mark TsaiM.D.

PRACTICEKOUNG Y CHEN MD, A PROFESSIONAL CORPORATIONSee all providers at this practice →

Internal MedicineParamount, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

561

Unique beneficiaries

—

Total services

998

Distinct HCPCS

Medicare payment

$54K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

8,744

Beneficiaries

—

Total drug cost

$851K

Distinct drugs

138

Brand share

20.4%

Top prescribed drugs

Atorvastatin Calcium445 claims

Metformin Hcl436 claims

Amlodipine Besylate397 claims

Losartan Potassium266 claims

Albuterol Sulfate248 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Education$90

Top paying entities

Food and Beverage$2K

Education$90

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (2)

CCN 059019

Home health agency

CCN 050348

Hospital

REFERRAL NETWORK

Where Mark Tsai'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). 7 inbound referrers · 8 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Primex Clinical Laboratories Inc. Clinical Laboratory · Van Nuys, CA	65	167
ST.FRANCIS MEDICAL CENTER	27	78
Unilab Corporation Clinical Laboratory · West Hills, CA	21	72
UNIVERSITY OF CALIFORNIA IRVINE	20	77
Wen-Yuan Chiang Nephrology · South Gate, CA	20	220
NPI 1255335535	13	81
TOTAL RENAL CARE INC	12	78

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	36	85
Wen-Yuan Chiang Nephrology · South Gate, CA	23	207
ST.FRANCIS MEDICAL CENTER	22	70
Christopher Lee Diagnostic Radiology · Orange, CA	18	72
UNIVERSITY OF CALIFORNIA IRVINE	18	54
NPI 1255335535	12	66
TOTAL RENAL CARE INC	11	70
Primex Clinical Laboratories Inc. Clinical Laboratory · Van Nuys, CA	11	29

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