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

ROBERT K TITTMANN M.D.
NPI 1881641561
Psychiatry & Neurology - Psychiatry in Cambridge, MA

Q: What is Robert Tittmann's NPI number?

The NPI number for Robert Tittmann is 1881641561. It was assigned to this individual provider in the NPPES registry on May 28, 2006.

Q: What is Robert Tittmann's specialty?

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

Q: Is Robert Tittmann enrolled in Medicare?

No. Robert Tittmann has opted out of Medicare through October 1, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Q: When was this NPI record last updated?

The NPPES record for Robert Tittmann was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 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 May 28, 2006Opted out of Medicare · through Oct 1, 2026

14A ELIOT ST, CAMBRIDGE, MA 02138(617) 489-4015 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Robert K Tittmann M.d. NPPES

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

ROBERT K TITTMANN M.D. (NPI 1881641561) is an individual psychiatry provider in Cambridge, Massachusetts, licensed in Massachusetts (76965) and active in the NPI registry since May 2006. He has opted out of Medicare through October 1, 2026.

NPPES Registry Identity

NPI1881641561

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameROBERT K TITTMANNCredential: M.D.

Location Address14A ELIOT STCambridge, MA 02138-5706

Mailing Address14a Eliot StCambridge, MA 02138-5706 · (617) 489-4015

Phone(617) 489-4015

Sole ProprietorNo

Enumeration DateMay 28, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1881641561 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 · 76965

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.

14A ELIOT ST, Cambridge, MA 02138

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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

Robert K Tittmann M.d. 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 October 1, 2020 through October 1, 2026.

Opt-Out Effective DateOctober 1, 2020

Opt-Out In Effect ThroughOctober 1, 2026Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES

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

DR. MICHAEL VINCENT MILLER PH.D.

Psychologist (Psychoanalysis)

14A ELIOT ST, THIRD FLOOR
CAMBRIDGE, MA 02138

Middlesex County (617) 818-7002

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 Robert Tittmann's NPI number?

The NPI number for Robert Tittmann is 1881641561. It was assigned to this individual provider in the NPPES registry on May 28, 2006.

Where is Robert Tittmann located?

Robert Tittmann practices at 14A Eliot St, Cambridge, MA 02138. The listed phone number is (617) 489-4015.

What is Robert Tittmann's specialty?

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

Is Robert Tittmann enrolled in Medicare?

No. Robert Tittmann has opted out of Medicare through October 1, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Robert Tittmann was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 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.