Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARIE B DEMAY MD
NPI 1528058153
Internal Medicine - Endocrinology, Diabetes & Metabolism in Boston, MA

Q: What is Marie Demay's NPI number?

The NPI number for Marie Demay is 1528058153. It was assigned to this individual provider in the NPPES registry on October 25, 2005.

Q: What is Marie Demay's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Marie Demay was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 25, 2005PECOS Enrolled

55 FRUIT ST, WEL 5, BOSTON, MA 02114(617) 726-8720(617) 724-2718 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Marie B Demay Md NPPES

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

DR. MARIE B DEMAY MD (NPI 1528058153) is an individual endocrinology, diabetes & metabolism provider in Boston, Massachusetts, licensed in Massachusetts (60276) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1528058153

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameDR. MARIE B DEMAYCredential: MD

Location Address55 FRUIT ST, WEL 5Boston, MA 02114-2621

Mailing AddressPo Box 9142Charlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894

Phone(617) 726-8720

Fax(617) 724-2718

Sole ProprietorNo

Enumeration DateOctober 25, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1528058153 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in MA · 60276

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

55 FRUIT ST, Boston, MA 02114

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Other Identifiers 3

OtherJ10378MA · Bcbs Ma

Other724181MA · Tufts Health Plan

Medicaid3060861MA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marie B Demay 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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

123 services117 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

76 services72 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

STUTI GIRISH SHROFF MD, MBBS

Pathology (Anatomic Pathology)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 726-2971

NANCY WANG M.D.

Internal Medicine (Hematology & Oncology)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (017) 724-4000

DR. DUSAN HANIDZIAR M.D., PH.D.

Anesthesiology

55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114

Suffolk County (617) 726-3030

JOHN JOSEPH DANKO DO

Physical Medicine & Rehabilitation

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 726-2000

DR. MICHAEL ANDREW LOBRITZ M.D, PH.D.

Internal Medicine (Infectious Disease)

55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114

Suffolk County (617) 724-9248

MS. KELLY ELISHA TRECARTIN NP

Nurse Practitioner (Acute Care)

55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114

Suffolk County (617) 726-7400

JAMIE MARIE ALLEN NP

Nurse Practitioner

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 724-4410

DR. DHAVAL SANJEEV KOLTE M.B.B.S., PH.D.

Internal Medicine (Cardiovascular Disease)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 643-3238

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 Marie Demay's NPI number?

The NPI number for Marie Demay is 1528058153. It was assigned to this individual provider in the NPPES registry on October 25, 2005.

Where is Marie Demay located?

Marie Demay practices at 55 Fruit St Wel 5, Boston, MA 02114. The listed phone number is (617) 726-8720.

What is Marie Demay's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Marie Demay enrolled in Medicare?

Yes. Marie Demay is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Marie Demay was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.