What is Mai-Sie Chan's specialty?

Mai-Sie Chan (NPI 1326136557) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Francisco, CA.

Where does Mai-Sie Chan practice?

Mai-Sie Chan practices in San Francisco, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1326136557.

How much does Medicare pay Mai-Sie Chan?

Mai-Sie Chan (NPI 1326136557) received approximately $82K in total Medicare Part B payments, serving 138 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1326136557

Mai-Sie ChanMD

PRACTICESHU-WING CHAN M.D., INC.See all providers at this practice →

Internal MedicineSan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

633

Unique beneficiaries

—

Total services

1,160

Distinct HCPCS

Medicare payment

$76K

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

5,015

Beneficiaries

—

Total drug cost

$563K

Distinct drugs

Brand share

14.0%

Top prescribed drugs

Losartan Potassium530 claims

Atorvastatin Calcium500 claims

Amlodipine Besylate492 claims

Metformin Hcl201 claims

Metoprolol Succinate159 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (4)

Home health agency

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where Mai-Sie Chan'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). 3 inbound referrers · 8 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Shu Wing Chan Internal Medicine · San Francisco, CA	50	179
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	14	21
UCSF HEALTH COMMUNITY HOSPITALS	11	20

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
CHINESE HOSPITAL ASSOCIATION	123	480
Shu Wing Chan Internal Medicine · San Francisco, CA	59	191
Roger Eng Diagnostic Radiology · San Francisco, CA	41	148
Eric Wang Diagnostic Radiology · Santa Cruz, CA	41	112
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	13	32
Unilab Corporation Clinical Laboratory · San Jose, CA	13	39
SUTTER BAY HOSPITALS	11	28
UNIVERSITY OF CALIFORNIA, SAN FRANCISCO	11	94

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