What is Karen Tuan's specialty?

Karen Tuan (NPI 1669441358) is a Medicare-billing provider whose primary specialty is Obstetrics & Gynecology in San Francisco, CA.

Where does Karen Tuan practice?

Karen Tuan practices in San Francisco, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1669441358.

How much does Medicare pay Karen Tuan?

Karen Tuan (NPI 1669441358) received approximately $52K in total Medicare Part B payments, serving 168 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1669441358

Karen TuanM.D.

PRACTICETUAN MEDICAL CORPORATIONSee all providers at this practice →

Obstetrics & GynecologySan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

550

Unique beneficiaries

—

Total services

594

Distinct HCPCS

Medicare payment

$49K

Peer benchmark

Total Medicare services vs. 1,761 Obstetrics & Gynecology providers in CA — top quintile (cohort median 118).

PRESCRIBING · PART D · 2024

Total Rx claims

509

Beneficiaries

—

Total drug cost

$49K

Distinct drugs

Brand share

13.4%

Top prescribed drugs

Estradiol311 claims

Terconazole74 claims

Estrogens, Conjugated68 claims

Ciprofloxacin Hcl56 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Karen Tuan'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). 7 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	38	58
Kenneth Hadler Pathology · Palo Alto, CA	21	29
Kin-Kee Pun Internal Medicine · San Francisco, CA	18	22
Gustin Ho Internal Medicine · San Francisco, CA	15	60
Johnson Kwan Emergency Medicine · San Francisco, CA	14	18
Simon Lee Internal Medicine · Burlingame, CA	12	30
SETON MEDICAL CENTER	11	24

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