DR. JOHN J MARIANI M.D.
NPI 1245383405
Psychiatry & Neurology - Addiction Medicine in New York, NY

Q: What is John Mariani's NPI number?

The NPI number for John Mariani is 1245383405. It was assigned to this individual provider in the NPPES registry on January 19, 2007.

Q: What is John Mariani's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Medicine, with taxonomy code 2084A0401X.

Q: Is John Mariani enrolled in Medicare?

No. John Mariani has opted out of Medicare through November 14, 2027. 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 John Mariani was last updated on February 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since January 19, 2007Opted out of Medicare · through Nov 14, 2027

51 E 25TH ST STE 7E, NEW YORK, NY 10010(646) 609-6771(646) 588-1984 Get Directions Write a Review

NPPES record last updated: February 22, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 22, 2020, Mar 17, 2018, Jul 21, 2017 (3 updates tracked since 2017).

On this page

About Dr. John J Mariani M.d. NPPES

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

DR. JOHN J MARIANI M.D. (NPI 1245383405) is an individual addiction medicine provider in New York, New York, licensed in New York (199048) and active in the NPI registry since January 2007. He has opted out of Medicare through November 14, 2027 and maintains a secondary practice location in New York.

NPPES Registry Identity

NPI1245383405

Entity TypeIndividualMale

Primary Taxonomy2084A0401X

Provider Legal NameDR. JOHN J MARIANICredential: M.D.

Location Address51 E 25TH ST STE 7ENew York, NY 10010-2945

Mailing Address51 E 25th St Ste 7eNew York, NY 10010-2945 · (646) 609-6771 · Fax (646) 588-1984

Phone(646) 609-6771

Fax(646) 588-1984

Sole ProprietorYes

Enumeration DateJanuary 19, 2007

Last NPPES UpdateFebruary 22, 20203 updates tracked since enumeration

✔ NPI 1245383405 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Addiction MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2084A0401X

License✔ Licensed in NY · 199048

Definition

A doctor of osteopathy board eligible/certified in the field of Psychiatry by the American Osteopathic Board of Neurology and Psychiatry is able to obtain a Certificate of Added Qualifications in the field of Addiction Medicine

51 E 25TH ST STE 7E, New York, NY 10010

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Secondary Practice Location 1

Location 11051 Riverside Dr, Division on Substance Abuse, Unit 66New York, NY 10032-1007 · Phone (212) 543-5987

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. John J Mariani 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 November 14, 2021 through November 14, 2027.

Opt-Out Effective DateNovember 14, 2021

Opt-Out In Effect ThroughNovember 14, 2027Opt-out affidavits renew automatically every two years unless cancelled

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 Mariani's NPI number?

The NPI number for John Mariani is 1245383405. It was assigned to this individual provider in the NPPES registry on January 19, 2007.

Where is John Mariani located?

John Mariani practices at 51 E 25th St Ste 7E, New York, NY 10010. The listed phone number is (646) 609-6771.

What is John Mariani's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Medicine, with taxonomy code 2084A0401X.

Is John Mariani enrolled in Medicare?

No. John Mariani has opted out of Medicare through November 14, 2027. 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 John Mariani was last updated on February 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.