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ALEXANDER THOMAS O'BRIEN PMHNP
NPI 1598420770
Nurse Practitioner - Psychiatric/Mental Health in Chestnut Hill, MA

Active since November 03, 2021PECOS Enrolled
300 SOUTH ST, CHESTNUT HILL, MA 02467(617) 469-0300 Get Directions Write a Review

NPPES record last updated: March 13, 2023. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Mar 13, 2023, Nov 3, 2021 (2 updates tracked since 2021).

About Alexander Thomas O'brien Pmhnp NPPES

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

ALEXANDER THOMAS O'BRIEN PMHNP (NPI 1598420770) is an individual psychiatric/mental health provider in Chestnut Hill, Massachusetts, licensed in Massachusetts (234518) and active in the NPI registry since November 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1598420770
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameALEXANDER THOMAS O'BRIENCredential: PMHNP
Location Address300 SOUTH STChestnut Hill, MA 02467-3694
Mailing Address300 South StChestnut Hill, MA 02467-3694 · (617) 676-3320
Phone(617) 469-0300
Sole ProprietorNo
Enumeration DateNovember 3, 2021
Last NPPES UpdateMarch 13, 20232 updates tracked since enumeration
NPPES CertifiedMarch 13, 2023
✔ NPI 1598420770 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 · 234518
300 SOUTH ST, Chestnut Hill, MA 02467
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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)

Alexander Thomas O'brien Pmhnp 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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
176 services34 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
117 services29 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
31 services28 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.
23 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02467 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.

SUZANNE MUSEMA
Social Worker (Clinical)
300 SOUTH ST
CHESTNUT HILL, MA 02467
Norfolk County (617) 319-6372
FIRST PSYCHIATRIC PLANNERS, INC
Psychiatric Hospital
300 SOUTH ST
BROOKLINE, MA 02467
Norfolk County (617) 469-0300
DR. IRINA Y MEZHEBOVSKY M.D.
Specialist
300 SOUTH ST
BROOKLINE, MA 02467
Norfolk County (617) 469-0300
CASEY LYNN REDPATH
Social Worker (Clinical)
300 SOUTH ST
CHESTNUT HILL, MA 02467
Norfolk County (617) 676-3368
ANDREA MAHERAS
Social Worker
300 SOUTH ST
BROOKLINE, MA 02467
Norfolk County (617) 469-0300
KENDALL MYKALA LAUDENSCHLAGER
Social Worker (Clinical)
300 SOUTH ST
CHESTNUT HILL, MA 02467
Norfolk County (617) 676-3364
CLAIRE MARIE O'CONNOR LICSW
Social Worker (Clinical)
300 SOUTH ST
CHESTNUT HILL, MA 02467
Norfolk County (617) 676-3374
MR. JONATHAN ROTENBERG LCSW
Social Worker (Clinical)
300 SOUTH ST
CHESTNUT HILL, MA 02467
Norfolk County (617) 469-0300

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 Alexander O'brien's NPI number?

The NPI number for Alexander O'brien is 1598420770. It was assigned to this individual provider in the NPPES registry on November 3, 2021.

Where is Alexander O'brien located?

Alexander O'brien practices at 300 South St, Chestnut Hill, MA 02467. The listed phone number is (617) 469-0300.

What is Alexander O'brien's specialty?

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

Is Alexander O'brien enrolled in Medicare?

Yes. Alexander O'brien is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alexander O'brien was last updated on March 13, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.