What is Lisa Ma's specialty?

Lisa Ma (NPI 1639125487) is a Medicare-billing provider whose primary specialty is Family Practice in Los Angeles, CA.

Where does Lisa Ma practice?

Lisa Ma practices in Los Angeles, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1639125487.

How much does Medicare pay Lisa Ma?

Lisa Ma (NPI 1639125487) received approximately $133K in total Medicare Part B payments, serving 263 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1639125487

Lisa MaMD

PRACTICERANDY CHEN, DDSSee all providers at this practice →

Family PracticeLos Angeles, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

856

Unique beneficiaries

—

Total services

1,638

Distinct HCPCS

Medicare payment

$127K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

9,259

Beneficiaries

—

Total drug cost

$806K

Distinct drugs

148

Brand share

26.4%

Top prescribed drugs

Atorvastatin Calcium682 claims

Levothyroxine Sodium481 claims

Gabapentin407 claims

Amlodipine Besylate407 claims

Losartan Potassium276 claims

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

94.3

Cost

69.4

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

1.05%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$702

Payment records

By payment type

Food and Beverage$702

Top paying entities

Food and Beverage$702

REFERRAL NETWORK

Where Lisa Ma'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). 6 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
WHITE MEMORIAL MEDICAL CENTER	55	110
Kenneth Teshima Podiatry · Laguna Woods, CA	29	69
Unilab Corporation Clinical Laboratory · West Hills, CA	27	132
KEIRO NURSING HOME	26	82
Sean Johnston Diagnostic Radiology · Santa Ana, CA	24	45
NEGLIO, MICHAEL	16	27

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