BENJAMIN EDMUND LANDWERSIEK MD
NPI 1386221513
Psychiatry & Neurology - Psychiatry in Cambridge, MA

Q: What is Benjamin Landwersiek's NPI number?

The NPI number for Benjamin Landwersiek is 1386221513. It was assigned to this individual provider in the NPPES registry on March 25, 2021.

Q: What is Benjamin Landwersiek's specialty?

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

Q: Is Benjamin Landwersiek enrolled in Medicare?

No. Benjamin Landwersiek has opted out of Medicare through December 17, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Active since March 25, 2021Opted out of Medicare · through Dec 17, 2027

1493 CAMBRIDGE ST, CAMBRIDGE, MA 02139(617) 665-1000 Get Directions Write a Review

NPPES record last updated: June 23, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jun 23, 2025, Mar 25, 2021 (2 updates tracked since 2021).

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About Benjamin Edmund Landwersiek Md NPPES

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

BENJAMIN EDMUND LANDWERSIEK MD (NPI 1386221513) is an individual psychiatry provider in Cambridge, Massachusetts, licensed in Massachusetts (1020436) and active in the NPI registry since March 2021. He has opted out of Medicare through December 17, 2027.

NPPES Registry Identity

NPI1386221513

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameBENJAMIN EDMUND LANDWERSIEKCredential: MD

Location Address1493 CAMBRIDGE STCambridge, MA 02139-1099

Mailing Address1493 Cambridge StCambridge, MA 02139-1099 · (617) 665-1000

Phone(617) 665-1000

Sole ProprietorNo

Enumeration DateMarch 25, 2021

Last NPPES UpdateJune 23, 20252 updates tracked since enumeration

NPPES CertifiedJune 23, 2025

✔ NPI 1386221513 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in MA · 1020436

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.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1493 CAMBRIDGE ST, Cambridge, MA 02139

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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.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

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Opted out of Medicare

Benjamin Edmund Landwersiek 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 December 17, 2025 through December 17, 2027.

Opt-Out Effective DateDecember 17, 2025

Opt-Out In Effect ThroughDecember 17, 2027Opt-out affidavits renew automatically every two years unless cancelled

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.

ZACHARY OLIFF DO

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