What is Marcus Lum's specialty?

Marcus Lum (NPI 1003839242) is a Medicare-billing provider whose primary specialty is Family Practice in La Mirada, CA.

Where does Marcus Lum practice?

Marcus Lum practices in La Mirada, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1003839242.

How much does Medicare pay Marcus Lum?

Marcus Lum (NPI 1003839242) received approximately $31K in total Medicare Part B payments, serving 126 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1003839242

Marcus LumMD

PRACTICECAREMORE HEALTH PLANSee all providers at this practice →

Family PracticeLa Mirada, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

254

Unique beneficiaries

—

Total services

333

Distinct HCPCS

Medicare payment

$25K

Peer benchmark

Total Medicare services vs. 8,228 Family Practice providers in CA — above median (cohort median 411).

PRESCRIBING · PART D · 2024

Total Rx claims

6,970

Beneficiaries

—

Total drug cost

$553K

Distinct drugs

120

Brand share

23.1%

Top prescribed drugs

Atorvastatin Calcium780 claims

Amlodipine Besylate314 claims

Levothyroxine Sodium287 claims

Lisinopril284 claims

Rosuvastatin Calcium279 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$1K

Payment records

By payment type

Food and Beverage$1K

Top paying entities

Food and Beverage$1K

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050169

Hospital

REFERRAL NETWORK

Where Marcus 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). 2 inbound referrers · 2 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	23	57
PIH HEALTH WHITTIER HOSPITAL	20	42

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	46	97
PIH HEALTH WHITTIER HOSPITAL	27	64

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