What is Joanne Sun's specialty?

Joanne Sun (NPI 1871797837) is a Medicare-billing provider whose primary specialty is Emergency Medicine in San Francisco, CA.

Where does Joanne Sun practice?

Joanne Sun practices in San Francisco, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1871797837.

How much does Medicare pay Joanne Sun?

Joanne Sun (NPI 1871797837) received approximately $28K in total Medicare Part B payments, serving 203 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1871797837

Joanne SunM.D.

PRACTICEFRED B HOM MD INCSee all providers at this practice →

Emergency MedicineSan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

296

Unique beneficiaries

—

Total services

304

Distinct HCPCS

Medicare payment

$26K

Peer benchmark

Total Medicare services vs. 5,287 Emergency Medicine providers in CA — below median (cohort median 355).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$46

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Doxycycline Hyclate11 claims

QUALITY · MIPS · 2024

Final MIPS score

96.7

Quality

90.0

Cost

78.4

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.91%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$143

Payment records

By payment type

Food and Beverage$143

Top paying entities

Food and Beverage$143

REFERRAL NETWORK

Where Joanne Sun'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). 21 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
UCSF HEALTH COMMUNITY HOSPITALS	367	1,129
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	131	704
CITY & COUNTY OF SAN FRANCISCO	70	381
American Medical Response West Ambulance Service Provider · San Francisco, CA	62	159
David Priest Diagnostic Radiology · San Francisco, CA	51	85
RAMPULLA, JOHN	50	115
Jessica Tan Diagnostic Radiology · San Francisco, CA	41	72
Lindsay Allen Physician Assistant · San Leandro, CA	40	71
Paula Arriaga Physician Assistant · San Francisco, CA	39	66
John Harris Diagnostic Radiology · San Francisco, CA	37	59
Luke Scalcione Diagnostic Radiology · San Diego, CA	36	78
Daniel Lentz Diagnostic Radiology · San Francisco, CA	31	43

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