What is Fang Tan's specialty?

Fang Tan (NPI 1811997646) is a Medicare-billing provider whose primary specialty is Ophthalmology in Fremont, CA.

Where does Fang Tan practice?

Fang Tan practices in Fremont, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1811997646.

How much does Medicare pay Fang Tan?

Fang Tan (NPI 1811997646) received approximately $163K in total Medicare Part B payments, serving 812 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1811997646

Fang TanMD

OphthalmologyFremont, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,070

Unique beneficiaries

—

Total services

2,242

Distinct HCPCS

Medicare payment

$155K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — above median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

1,250

Beneficiaries

—

Total drug cost

$229K

Distinct drugs

Brand share

28.9%

Top prescribed drugs

Azelastine Hcl271 claims

Latanoprost248 claims

Brimonidine Tartrate100 claims

Cyclosporine94 claims

Erythromycin Base82 claims

QUALITY · MIPS · 2024

Final MIPS score

79.6

Quality

49.1

Cost

0.0

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.19%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Fang Tan'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). 9 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Lay-Hwa Lou Internal Medicine · Fremont, CA	27	47
Yu-Hong Law General Surgery · Fremont, CA	26	53
Evelyn Li Cardiology · Fremont, CA	26	187
Jiin Lin Internal Medicine · Fremont, CA	18	28
Claire Diep Internal Medicine · Union City, CA	18	27
Jon Keller Pathology · Palo Alto, CA	17	30
Romesh Japra Internal Medicine · Fremont, CA	15	48
Jan Dickey Internal Medicine · Fremont, CA	15	25
Kenneth Tuong Truong Internal Medicine · Union City, CA	11	19

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