What is Maria Zweig's specialty?

Maria Zweig (NPI 1356303549) is a Medicare-billing provider whose primary specialty is Obstetrics & Gynecology in San Juan, PR.

Where does Maria Zweig practice?

Maria Zweig practices in San Juan, PR, based on the location reported in the CMS Medicare provider datasets for NPI 1356303549.

How much does Medicare pay Maria Zweig?

Maria Zweig (NPI 1356303549) received approximately $31K in total Medicare Part B payments, serving 147 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1356303549

Maria ZweigM.D.

Obstetrics & GynecologySan Juan, PRI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

291

Unique beneficiaries

—

Total services

411

Distinct HCPCS

Medicare payment

$28K

Peer benchmark

Total Medicare services vs. 76 Obstetrics & Gynecology providers in PR — top quintile (cohort median 63).

PRESCRIBING · PART D · 2024

Total Rx claims

709

Beneficiaries

—

Total drug cost

$78K

Distinct drugs

Brand share

35.0%

Top prescribed drugs

Estradiol212 claims

Progesterone, Micronized125 claims

Alendronate Sodium82 claims

Metronidazole72 claims

Tolterodine Tartrate48 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$119

Payment records

By payment type

Food and Beverage$119

Top paying entities

Food and Beverage$119

REFERRAL NETWORK

Where Maria Zweig'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). 5 inbound referrers · 8 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
HOSPITAL ESPANOL AUXILIO MUTUO DE PUERTO RICO, INC.	55	205
Jose Paz Pathology · San Juan, PR	45	63
FIGUEROA-RAMIREZ, ANTONIO	24	37
LABORATORIO CLINICO C L A INC	16	47
Gustavo Vazquez Obstetrics & Gynecology · San Juan, PR	11	13

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
HOSPITAL ESPANOL AUXILIO MUTUO DE PUERTO RICO, INC.	38	124
Miosotis Garcia Maldonado Pathology · San Juan, PR	32	33
Victor Carlo Pathology · Hato Rey, PR	18	28
William Cruz Diagnostic Radiology · San Juan, PR	16	27
PRESBYTERIAN COMMUNITY HOSPITAL, INC	16	40
Laboratorio Clinico Noy , Inc. Clinical Laboratory · San Juan, PR	15	17
Jose Paz Pathology · San Juan, PR	14	18
Hato Rey Pathology Associates Inc Clinical Laboratory · San Juan, PR	11	13

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