What is William Lang's specialty?

William Lang (NPI 1366455842) is a Medicare-billing provider whose primary specialty is Internal Medicine in Marina Del Rey, CA.

Where does William Lang practice?

William Lang practices in Marina Del Rey, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1366455842.

How much does Medicare pay William Lang?

William Lang (NPI 1366455842) received approximately $33K in total Medicare Part B payments, serving 164 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1366455842

William LangM.D.

Internal MedicineMarina Del Rey, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

489

Unique beneficiaries

—

Total services

631

Distinct HCPCS

Medicare payment

$31K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — above median (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

3,064

Beneficiaries

—

Total drug cost

$197K

Distinct drugs

Brand share

18.4%

Top prescribed drugs

Atorvastatin Calcium269 claims

Levothyroxine Sodium162 claims

Losartan Potassium156 claims

Amlodipine Besylate152 claims

Simvastatin137 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 William Lang'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). 9 inbound referrers · 14 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	79	224
Mason Weiss Interventional Cardiology · Inglewood, CA	22	112
PRIME HEALTHCARE CENTINELA, LLC	17	34
Andrew Kelly Diagnostic Radiology · Inglewood, CA	17	65
Michael Dawson Diagnostic Radiology · Inglewood, CA	14	34
ROSENTHAL, JORDAN	13	50
Craig Gomberg Diagnostic Radiology · Inglewood, CA	12	26
Steven Davis Otolaryngology · Torrance, CA	12	53
TORRANCE MEMORIAL MEDICAL CENTER	11	15

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	116	362
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	68	191
CEDARS-SINAI MARINA HOSPITAL	31	101
Mason Weiss Interventional Cardiology · Inglewood, CA	30	121
Lawrence Paletz Urology · Los Alamitos, CA	26	108
SHAUB, MICHAEL	23	66
Donald Mayekawa Diagnostic Radiology · Inglewood, CA	19	53
PRIME HEALTHCARE CENTINELA, LLC	15	27
Michael Dawson Diagnostic Radiology · Inglewood, CA	14	28
ROSENTHAL, JORDAN	14	26
ZOPPI, ANTHONY	13	65
Andrew Kelly Diagnostic Radiology · Inglewood, CA	13	49

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