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

CHARLES MAHDY PMHNP
NPI 1750978755
Nurse Practitioner - Psychiatric/Mental Health in Boston, MA

Q: What is Charles Mahdy's NPI number?

The NPI number for Charles Mahdy is 1750978755. It was assigned to this individual provider in the NPPES registry on December 23, 2020.

Q: What is Charles Mahdy's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Q: When was this NPI record last updated?

The NPPES record for Charles Mahdy was last updated on September 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 December 23, 2020PECOS EnrolledAccepts Medicare Assignment

221 LONGWOOD AVE, BOSTON, MA 02115(617) 732-6753(617) 738-8703 Get Directions Write a Review

NPPES record last updated: September 13, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 13, 2026, Apr 26, 2021, Dec 23, 2020 (3 updates tracked since 2020).

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About Charles Mahdy Pmhnp NPPES

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

CHARLES MAHDY PMHNP (NPI 1750978755) is an individual psychiatric/mental health provider in Boston, Massachusetts, licensed in Massachusetts (RN2320527) and active in the NPI registry since December 2020. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1750978755

Entity TypeIndividualMale

Primary Taxonomy363LP0808X

Provider Legal NameCHARLES MAHDYCredential: PMHNP

Location Address221 LONGWOOD AVEBoston, MA 02115-5817

Mailing Address321 Walnut St # 302Newton, MA 02460-1927 · (617) 221-1390 · Fax (617) 221-1391

Phone(617) 732-6753

Fax(617) 738-8703

Sole ProprietorYes

Medical School CMSOtherGraduated 2020

Enumeration DateDecember 23, 2020

Last NPPES UpdateSeptember 13, 20263 updates tracked since enumeration

NPPES CertifiedSeptember 13, 2026

✔ NPI 1750978755 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0808X

License✔ Licensed in MA · RN2320527

221 LONGWOOD AVE, Boston, MA 02115

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Charles Mahdy Pmhnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5890103063

PECOS Enrollment IDI20210428001574

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 3

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 low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

92 services31 patients

Psychotherapy with evaluation and management visit, 30 minutes 90833

Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.

50 services18 patients

Psychiatric diagnostic evaluation with medical services 90792

A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.

20 services19 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220110

Location75 Francis StreetBoston, MA 02115 · Suffolk County

Emergency services Birthing friendly

Faulkner Hospital-Brigham And Women's

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220119

Location1153 Centre StreetBoston, MA 02130 · Suffolk County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 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

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

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.

MS. BLAIR D MANNING GARRIDO LICSW

Social Worker (Clinical)

221 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 732-6753

DANIEL WILLIAM CRAMER MD SCD

Obstetrics & Gynecology (Gynecology)

221 LONGWOOD AVE, BRIGHAM AND WOMENS HOSP DEPT OF OBSTETRICS AND GYNECOLO
BOSTON, MA 02115

Suffolk County (617) 732-4895

DANIEL M GRIMES M.D.

Psychiatry & Neurology (Psychiatry)

221 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 667-2300

REENA KAPOOR M.D.

Psychiatry & Neurology (Psychiatry)

221 LONGWOOD AVE, 4TH FL/PSYCHIATRY
BOSTON, MA 02115

Suffolk County (617) 667-2300

QUENTIN REGESTEIN MD

Specialist

221 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 739-1340

CHRISTINE MICHELLE CORNEJO

Dermatology

221 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 732-5500

BRIGHAM AND WOMEN'S HOSPITAL

General Acute Care Hospital

221 LONGWOOD AVE, BWH-ENDOCRINOLOGY
BOSTON, MA 02115

Suffolk County (617) 525-8867

DR. FARRAH BUCKHOREE MD, PHD

Dermatology

221 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 732-5500

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 Charles Mahdy's NPI number?

The NPI number for Charles Mahdy is 1750978755. It was assigned to this individual provider in the NPPES registry on December 23, 2020.

Where is Charles Mahdy located?

Charles Mahdy practices at 221 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 732-6753.

What is Charles Mahdy's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Charles Mahdy enrolled in Medicare?

Yes. Charles Mahdy is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Charles Mahdy accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Charles Mahdy as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Charles Mahdy affiliated with any hospitals?

According to CMS data, Charles Mahdy is affiliated with Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.

When was this NPI record last updated?

The NPPES record for Charles Mahdy was last updated on September 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.