What is Mark Lewis's specialty?

Mark Lewis (NPI 1891985800) is a Medicare-billing provider whose primary specialty is Internal Medicine in Mountain View, CA.

Where does Mark Lewis practice?

Mark Lewis practices in Mountain View, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1891985800.

How much does Medicare pay Mark Lewis?

Mark Lewis (NPI 1891985800) received approximately $137K in total Medicare Part B payments, serving 443 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1891985800

Mark LewisMD

Internal MedicineMountain View, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

980

Unique beneficiaries

—

Total services

1,780

Distinct HCPCS

Medicare payment

$133K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

4,660

Beneficiaries

—

Total drug cost

$353K

Distinct drugs

Brand share

18.7%

Top prescribed drugs

Amlodipine Besylate323 claims

Levothyroxine Sodium281 claims

Atorvastatin Calcium281 claims

Rosuvastatin Calcium234 claims

Metformin Hcl210 claims

QUALITY · MIPS · 2024

Final MIPS score

23.1

Quality

0.0

Cost

77.0

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-6.23%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$266

Payment records

By payment type

Food and Beverage$248

Education$17

Top paying entities

Food and Beverage$248

Education$17

REFERRAL NETWORK

Where Mark Lewis'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). 17 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
EL CAMINO HOSPITAL	197	1,088
WEST COAST CLINICAL LABORATORIES, INC.	93	338
Samuel Dawn Diagnostic Radiology · Mountain View, CA	54	345
Daniel Kanada Diagnostic Radiology · Santa Clara, CA	53	261
Imtiaz Qureshi Diagnostic Radiology · Cupertino, CA	28	82
Arthur Douville Neurology · Los Gatos, CA	23	65
David Lewis Internal Medicine · Mountain View, CA	22	109
Shane Dormady Hematology-Oncology · Mountain View, CA	22	202
Andrew Menkes Dermatology · Mountain View, CA	18	96
COLLINGS, CATHERINE	18	69
Neal Scott Internal Medicine · Mountain View, CA	15	85
Ramtin Agah Cardiology · Mountain View, CA	14	70

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