What is Timothy Liem's specialty?

Timothy Liem (NPI 1790882561) is a Medicare-billing provider whose primary specialty is Vascular Surgery in Portland, OR.

Where does Timothy Liem practice?

Timothy Liem practices in Portland, OR, based on the location reported in the CMS Medicare provider datasets for NPI 1790882561.

How much does Medicare pay Timothy Liem?

Timothy Liem (NPI 1790882561) received approximately $58K in total Medicare Part B payments, serving 355 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1790882561

Timothy LiemMD

Vascular SurgeryPortland, ORI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

318

Unique beneficiaries

—

Total services

326

Distinct HCPCS

Medicare payment

$14K

Peer benchmark

Total Medicare services vs. 44 Vascular Surgery providers in OR — above median (cohort median 495).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$37K

Distinct drugs

Brand share

84.9%

Top prescribed drugs

Clopidogrel Bisulfate34 claims

Rivaroxaban15 claims

Apixaban13 claims

Atorvastatin Calcium11 claims

QUALITY · MIPS · 2024

Final MIPS score

99.1

Quality

84.3

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

1.01%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Timothy Liem'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). 22 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Charles Henrikson Clinical Cardiac Electrophysiology · Portland, OR	53	84
PRIMACK, STEVEN	50	94
JUNG, ENJAE	45	142
Marc Gosselin Diagnostic Radiology · Dallas, TX	38	63
Eric Stecker Clinical Cardiac Electrophysiology · Portland, OR	37	52
Cristina Fuss Diagnostic Radiology · Portland, OR	33	51
Rupa Bala Clinical Cardiac Electrophysiology · Providence, RI	32	66
Erica Mitchell Vascular Surgery · Portland, OR	26	43
Brooke Beckett Diagnostic Radiology · Portland, OR	23	48
Mark Baskerville Anesthesiology · Columbia, MD	20	31
HEITNER, STEPHEN	19	27
Alexander Guimaraes Diagnostic Radiology · Portland, OR	16	26

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