What is Diane Lum's specialty?

Diane Lum (NPI 1821077975) is a Medicare-billing provider whose primary specialty is Internal Medicine in Memphis, TN.

Where does Diane Lum practice?

Diane Lum practices in Memphis, TN, based on the location reported in the CMS Medicare provider datasets for NPI 1821077975.

How much does Medicare pay Diane Lum?

Diane Lum (NPI 1821077975) received approximately $120K in total Medicare Part B payments, serving 271 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1821077975

Diane LumM.D.

Internal MedicineMemphis, TNI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,043

Unique beneficiaries

—

Total services

2,176

Distinct HCPCS

Medicare payment

$115K

Peer benchmark

Total Medicare services vs. 1,907 Internal Medicine providers in TN — top quintile (cohort median 791).

PRESCRIBING · PART D · 2024

Total Rx claims

5,331

Beneficiaries

—

Total drug cost

$360K

Distinct drugs

105

Brand share

14.6%

Top prescribed drugs

Amlodipine Besylate305 claims

Atorvastatin Calcium302 claims

Losartan Potassium293 claims

Rosuvastatin Calcium245 claims

Metoprolol Succinate221 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 Diane Lum'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). 24 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Stephen Shiffman Internal Medicine · Memphis, TN	76	237
Michael Muhlert Interventional Radiology · Memphis, TN	42	150
James Thomas Diagnostic Radiology · Memphis, TN	37	119
COWLES, STEFAN	30	92
COHEN, AVRAHM	26	88
Peter Law Pulmonary Disease · Memphis, TN	24	162
Loi Vu Diagnostic Radiology · Southaven, MS	23	92
BRADY, MICHAEL	23	47
Sean Klepper Pathology · Memphis, TN	21	43
Mohammed Bah Emergency Medicine · Cordova, TN	19	36
Brown Robertson Emergency Medicine · Jackson, MS	19	44
SIMMONS, DAVID	16	92

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