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DR. JAMES MALCOLM BORTHWICK MD
NPI 1366655052
Psychiatry & Neurology - Psychiatry in Princeton, NJ

Active since May 08, 2007Opted out of Medicare · through Nov 23, 2026
166 BUNN DR, PRINCETON, NJ 08540(609) 688-9800(609) 921-8355 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. James Malcolm Borthwick Md NPPES

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

DR. JAMES MALCOLM BORTHWICK MD (NPI 1366655052) is an individual psychiatry provider in Princeton, New Jersey, licensed in New Jersey (25MA07660800) and active in the NPI registry since May 2007. He has opted out of Medicare through November 23, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1366655052
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. JAMES MALCOLM BORTHWICKCredential: MD
Location Address166 BUNN DRPrinceton, NJ 08540-2800
Mailing Address166 Bunn DrPrinceton, NJ 08540-2800 · (609) 688-9800 · Fax (609) 921-8355
Phone(609) 688-9800
Fax(609) 921-8355
Sole ProprietorYes
Enumeration DateMay 8, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1366655052 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 NJ · 25MA07660800
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.
166 BUNN DR, Princeton, NJ 08540
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. James Malcolm Borthwick Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from November 23, 2016 through November 23, 2026.

Opt-Out Effective DateNovember 23, 2016
Opt-Out In Effect ThroughNovember 23, 2026Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 08540 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
$185.05 typical visit price
range $61.59 – $185.05
Typical copayment $46.26 (range $15.39 – $46.26)
Most-billed visit code 99205
Established Patient
$76.45 typical visit price
range $20.08 – $150.98
Typical copayment $19.11 (range $5.02 – $37.74)
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.

Other Providers at the Same Location NPPES 10

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

ELLEN HERR-ISRAEL
Psychologist
166 BUNN DR
PRINCETON, NJ 08540
Mercer County (908) 625-1534
MS. HINDA WINAWER MSW
Social Worker (Clinical)
166 BUNN DR, SUITE 105
PRINCETON, NJ 08540
Mercer County (609) 921-2551
ANGELA INZERILLO MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
166 BUNN DR, STE 109
PRINCETON, NJ 08540
Mercer County (609) 921-1511
DR. SAMUEL SAUL LEVINE D.D.S.
Dentist (Oral and Maxillofacial Surgery)
166 BUNN DR, SUITE 103
PRINCETON, NJ 08540
Mercer County (609) 924-1621
MS. GLENDA MENDELSOHN MSW
Social Worker (Clinical)
166 BUNN DR, SUITE 105
PRINCETON, NJ 08540
Mercer County (609) 921-2551
MATTHEW D HAAR, PHD INC
Clinic/Center (Adult Mental Health)
166 BUNN DR, SUITE 101
PRINCETON, NJ 08540
Mercer County (609) 921-0755
PAMELA GAIL FEIG LCSW
Social Worker (Clinical)
166 BUNN DR
PRINCETON, NJ 08540
Mercer County (609) 933-6681
JOANNE DAILEY LCSW
Counselor (Mental Health)
166 BUNN DR
PRINCETON, NJ 08540
Mercer County (609) 683-0002

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 James Borthwick's NPI number?

The NPI number for James Borthwick is 1366655052. It was assigned to this individual provider in the NPPES registry on May 8, 2007.

Where is James Borthwick located?

James Borthwick practices at 166 Bunn Dr, Princeton, NJ 08540. The listed phone number is (609) 688-9800.

What is James Borthwick's specialty?

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

Is James Borthwick enrolled in Medicare?

No. James Borthwick has opted out of Medicare through November 23, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for James Borthwick was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.