What is Lenna Martyak's specialty?

Lenna Martyak (NPI 1164638177) is a Medicare-billing provider whose primary specialty is Gastroenterology in Santa Monica, CA.

Where does Lenna Martyak practice?

Lenna Martyak practices in Santa Monica, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1164638177.

How much does Medicare pay Lenna Martyak?

Lenna Martyak (NPI 1164638177) received approximately $161K in total Medicare Part B payments, serving 666 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1164638177

Lenna MartyakM.D.

PRACTICEWEST LOS ANGELES ANESTHESIA SERVICESSee all providers at this practice →

GastroenterologySanta Monica, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,081

Unique beneficiaries

—

Total services

1,357

Distinct HCPCS

Medicare payment

$149K

Peer benchmark

Total Medicare services vs. 1,398 Gastroenterology providers in CA — top quintile (cohort median 750).

PRESCRIBING · PART D · 2024

Total Rx claims

1,252

Beneficiaries

—

Total drug cost

$1.0M

Distinct drugs

Brand share

28.2%

Top prescribed drugs

Pantoprazole Sodium334 claims

Famotidine256 claims

Omeprazole93 claims

Linaclotide74 claims

Ondansetron44 claims

QUALITY · MIPS · 2024

Final MIPS score

90.4

Quality

96.1

Cost

72.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.65%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Top paying entities

Food and Beverage$2K

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050290

Hospital

REFERRAL NETWORK

Where Lenna Martyak'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 · 18 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PROVIDENCE SAINT JOHN'S HEALTH CENTER	104	258
ROGERS, DAVID	59	81
Vicki Schiller Diagnostic Radiology · Santa Monica, CA	19	32
Robert Krasny Diagnostic Radiology · Santa Monica, CA	18	24
Srinivas Peddi Diagnostic Radiology · Valencia, CA	16	23
Simon Gabriel Diagnostic Radiology · Los Angeles, CA	15	22
Melani Shaum Hematology-Oncology · Lompoc, CA	14	50
Unilab Corporation Clinical Laboratory · West Hills, CA	14	46
Rahul Dixit Gastroenterology · Santa Monica, CA	11	15

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Endoscopy Center Of Southern California Llc Ambulatory Surgical Center · Santa Monica, CA	71	123
PROVIDENCE SAINT JOHN'S HEALTH CENTER	62	131
ROGERS, DAVID	32	43
Robert Krasny Diagnostic Radiology · Santa Monica, CA	23	32
Barbara Brennan Certified Registered Nurse Anesthetist (CRNA) · Inglewood, CA	22	39
HUGHES, PATRICIA	21	34
Ira Smalberg Diagnostic Radiology · Santa Monica, CA	19	45
Morris Grabie Internal Medicine · Santa Monica, CA	17	65
Unilab Corporation Clinical Laboratory · West Hills, CA	15	39
CEDARS-SINAI MEDICAL CENTER	14	45
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	14	27
Simon Gabriel Diagnostic Radiology · Los Angeles, CA	13	23

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