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MARIAH DIAZ MD
NPI 1245183656
Student in an Organized Health Care Education/Training Program in Boston, MA

Active since February 16, 2026PECOS Enrolled
243 CHARLES ST, BOSTON, MA 02114(617) 523-7900 Get Directions Write a Review

NPPES record last updated: February 16, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mariah Diaz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIAH DIAZ MD (NPI 1245183656) is an individual student in an organized health care education/training program in Boston, Massachusetts and active in the NPI registry since February 2026. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245183656
Entity TypeIndividualFemale
Primary Taxonomy390200000X
Provider Legal NameMARIAH DIAZCredential: MD
Location Address243 CHARLES STBoston, MA 02114-3002
Mailing Address243 Charles StBoston, MA 02114-3002
Phone(617) 523-7900
Sole ProprietorNo
Enumeration DateFebruary 16, 2026
NPPES CertifiedFebruary 16, 2026
✔ NPI 1245183656 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

243 CHARLES ST, Boston, MA 02114
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mariah Diaz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CARLA PETERSEN AU.D., CCC-A
Audiologist
243 CHARLES ST, AUDIOLOGY DEPARTMENT
BOSTON, MA 02114
Suffolk County (617) 573-3266
DR. RYAN CARLSON MD PHD
Student in an Organized Health Care Education/Training Program
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 523-7900
MASSACHUSETTS EYE AND EAR INFIRMARY
Eyewear Supplier
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3182
DANIEL ROBERT LEFEBVRE M.D.
Ophthalmology
243 CHARLES ST, 10TH FLOOR -- OPHTHALMIC PLASTIC SURGERY
BOSTON, MA 02114
Suffolk County (617) 523-7900
ELLIOTT D. KOZIN MD
Otolaryngology
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-6545
DR. LUCIA K SOMBERG MD, MPH
Emergency Medicine
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3431
MS. JANET ENGLISH HUETTIG LICSW
Social Worker (Clinical)
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3548
KYUNG OH DO, MS
Anesthesiology
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3380

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mariah Diaz's NPI number?

The NPI number for Mariah Diaz is 1245183656. It was assigned to this individual provider in the NPPES registry on February 16, 2026.

Where is Mariah Diaz located?

Mariah Diaz practices at 243 Charles St, Boston, MA 02114. The listed phone number is (617) 523-7900.

What is Mariah Diaz's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Mariah Diaz enrolled in Medicare?

Yes. Mariah Diaz is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mariah Diaz was last updated on February 16, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.