What is Marilyn Tan's specialty?

Marilyn Tan (NPI 1770899395) is a Medicare-billing provider whose primary specialty is Endocrinology in Stanford, CA.

Where does Marilyn Tan practice?

Marilyn Tan practices in Stanford, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1770899395.

How much does Medicare pay Marilyn Tan?

Marilyn Tan (NPI 1770899395) received approximately $185K in total Medicare Part B payments, serving 429 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1770899395

Marilyn TanM.D.

PRACTICESTANFORD HEALTH CARESee all providers at this practice →

EndocrinologyStanford, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

947

Unique beneficiaries

—

Total services

2,226

Distinct HCPCS

Medicare payment

$181K

Peer benchmark

Total Medicare services vs. 633 Endocrinology providers in CA — above median (cohort median 1,164).

PRESCRIBING · PART D · 2024

Total Rx claims

2,049

Beneficiaries

—

Total drug cost

$2.0M

Distinct drugs

Brand share

63.6%

Top prescribed drugs

Levothyroxine Sodium277 claims

Dulaglutide179 claims

Tirzepatide175 claims

Metformin Hcl150 claims

Semaglutide117 claims

QUALITY · MIPS · 2024

Final MIPS score

88.5

Quality

87.1

Cost

69.5

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.57%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$4K

Payment records

By payment type

Consulting Fee$4K

Food and Beverage$338

Top paying entities

Consulting Fee$4K

Food and Beverage$338

REFERRAL NETWORK

Where Marilyn 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). 14 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Ann Leung Diagnostic Radiology · Stanford, CA	24	153
Marina Basina Endocrinology · Stanford, CA	24	319
Linda Morimoto Diagnostic Radiology · Stanford, CA	21	98
JEFFREY, ROBERT	19	93
GAYER, GABRIELA	18	206
Karen Friday Cardiology · Stanford, CA	18	87
Andreas Loening Diagnostic Radiology · Stanford, CA	16	88
Ingela Schnittger Cardiology · Stanford, CA	15	67
DESSER, TERRY	15	68
Hans-Christoph Becker Diagnostic Radiology · Palo Alto, CA	13	81
Joshua Spin Cardiology · Stanford, CA	13	85
Kathryn Stevens Diagnostic Radiology · Stanford, CA	12	96

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