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DR. JOHN SCOTT MARTIN-JOY M.D.
NPI 1023169141
Psychiatry & Neurology - Psychiatry in Cambridge, MA

Active since January 16, 2007PECOS EnrolledAccepts Medicare Assignment
875 MASSACHUSETTS AVE STE 22, CAMBRIDGE, MA 02139(617) 417-6902(315) 821-8567 Get Directions Write a Review

NPPES record last updated: October 29, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. John Scott Martin-joy M.d. NPPES

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

DR. JOHN SCOTT MARTIN-JOY M.D. (NPI 1023169141) is an individual psychiatry provider in Cambridge, Massachusetts, licensed in Massachusetts (210262) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of University Of Massachusetts Medical School (1998).

NPPES Registry Identity

NPI1023169141
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. JOHN SCOTT MARTIN-JOYCredential: M.D.
Location Address875 MASSACHUSETTS AVE STE 22Cambridge, MA 02139-3070
Mailing Address875 Massachusetts Ave Ste 22Cambridge, MA 02139-3070 · (617) 417-6902 · Fax (315) 821-8567
Phone(617) 417-6902
Fax(315) 821-8567
Sole ProprietorNo
Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 1998
Enumeration DateJanuary 16, 2007
Last NPPES UpdateOctober 29, 2025
NPPES CertifiedOctober 29, 2025
✔ NPI 1023169141 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MA · 210262
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
875 MASSACHUSETTS AVE STE 22, Cambridge, MA 02139
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Other Names 1

Former Name (1)John Scott Martin

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

Dr. John Scott Martin-joy M.d. 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 ID5597750976
PECOS Enrollment IDI20040415001060
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.

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.
107 services13 patients
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.
84 services16 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.
84 services45 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
26 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02139 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 John Martin-joy's NPI number?

The NPI number for John Martin-joy is 1023169141. It was assigned to this individual provider in the NPPES registry on January 16, 2007. The provider is also known as John Scott Martin.

Where is John Martin-joy located?

John Martin-joy practices at 875 Massachusetts Ave Ste 22, Cambridge, MA 02139. The listed phone number is (617) 417-6902.

What is John Martin-joy's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is John Martin-joy enrolled in Medicare?

Yes. John Martin-joy 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 John Martin-joy accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list John Martin-joy 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.

When was this NPI record last updated?

The NPPES record for John Martin-joy was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.