What is Walter Tan's specialty?

Walter Tan (NPI 1821010067) is a Medicare-billing provider whose primary specialty is Interventional Cardiology in Raleigh, NC.

Where does Walter Tan practice?

Walter Tan practices in Raleigh, NC, based on the location reported in the CMS Medicare provider datasets for NPI 1821010067.

How much does Medicare pay Walter Tan?

Walter Tan (NPI 1821010067) received approximately $24K in total Medicare Part B payments, serving 118 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1821010067

Walter TanM.D.

Interventional CardiologyRaleigh, NCI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

147

Unique beneficiaries

—

Total services

197

Distinct HCPCS

Medicare payment

$14K

Peer benchmark

Total Medicare services vs. 138 Interventional Cardiology providers in NC — bottom quintile (cohort median 1,268).

PRESCRIBING · PART D · 2024

Total Rx claims

481

Beneficiaries

—

Total drug cost

$21K

Distinct drugs

Brand share

8.3%

Top prescribed drugs

Losartan Potassium69 claims

Carvedilol58 claims

Rosuvastatin Calcium51 claims

Atorvastatin Calcium49 claims

Metoprolol Succinate44 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$94

Payment records

By payment type

Food and Beverage$94

Top paying entities

Food and Beverage$94

REFERRAL NETWORK

Where Walter 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). 10 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Bryon Boulton General Surgery · Raleigh, NC	37	449
DOUGLAS, MARTIN	25	128
HUNTER, ROBERT	14	55
Sahar Amery Internal Medicine · Albany, NY	13	59
Matthew White Cardiology · Raleigh, NC	13	58
George Hamrick Cardiology · Raleigh, NC	13	142
Catherine Lerner Diagnostic Radiology · Raleigh, NC	12	46
MANGANO, CHARLES	11	58
Laura Meyer Diagnostic Radiology · Raleigh, NC	11	37
SOLSTAS LAB PARTNERS GROUP LLC	11	49

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