What is Maria Castells's specialty?

Maria Castells (NPI 1427039478) is a Medicare-billing provider whose primary specialty is Allergy/ Immunology in Gardner, MA.

Where does Maria Castells practice?

Maria Castells practices in Gardner, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1427039478.

How much does Medicare pay Maria Castells?

Maria Castells (NPI 1427039478) received approximately $15K in total Medicare Part B payments, serving 105 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1427039478

Maria CastellsMD

Allergy/ ImmunologyGardner, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

103

Unique beneficiaries

—

Total services

121

Distinct HCPCS

Medicare payment

$13K

Peer benchmark

Total Medicare services vs. 128 Allergy/ Immunology providers in MA — bottom quintile (cohort median 1,606).

PRESCRIBING · PART D · 2024

Total Rx claims

246

Beneficiaries

—

Total drug cost

$871K

Distinct drugs

Brand share

36.6%

Top prescribed drugs

Omalizumab41 claims

Diphenhydramine Hcl27 claims

Epinephrine26 claims

Cromolyn Sodium24 claims

Montelukast Sodium20 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$20K

Payment records

By payment type

Consulting Fee$8K

Honoraria$5K

Compensation for serving as faculty or as a speaker for a medical education program$3K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2K

Travel and Lodging$1K

Top paying entities

Consulting Fee$8K

Honoraria$5K

Compensation for serving as faculty or as a speaker for a medical education program$3K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2K

Travel and Lodging$1K

REFERRAL NETWORK

Where Maria Castells'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 · 7 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NEWBRIDGE ON THE CHARLES, INC.	18	27
Alexis Kelleher Nurse Practitioner · Roslindale, MA	16	36
THE GENERAL HOSPITAL CORPORATION	14	53
Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA	12	38
FALLON SERVICE, INC.	12	24

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
BRIGHAM & WOMENS HOSPITAL, INC.	131	990
DANA-FARBER CANCER INSTITUTE, INC.	31	218
BETH ISRAEL DEACONESS MEDICAL CENTER, INC.	18	77
Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA	13	28
THE GENERAL HOSPITAL CORPORATION	11	59
BRIGHAM AND WOMEN'S FAULKNER HOSPITAL INC	11	200
David Sloane Allergy/ Immunology · Chestnut Hill, MA	11	21

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