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

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