DR. LAWRENCE DAVID MASS M.D.
NPI 1609090349
Internal Medicine - Addiction Medicine in New York, NY

Q: What is Lawrence Mass's NPI number?

The NPI number for Lawrence Mass is 1609090349. It was assigned to this individual provider in the NPPES registry on April 12, 2007.

Q: What is Lawrence Mass's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Q: When was this NPI record last updated?

The NPPES record for Lawrence Mass was last updated on December 3, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 April 12, 2007

435 2ND AVE, NEW YORK, NY 10010(212) 726-6823 Get Directions Write a Review

NPPES record last updated: December 3, 2012. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Lawrence David Mass M.d. NPPES

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

DR. LAWRENCE DAVID MASS M.D. (NPI 1609090349) is an individual addiction medicine provider in New York, New York, licensed in New York (127475) and active in the NPI registry since April 2007.

NPPES Registry Identity

NPI1609090349

Entity TypeIndividualMale

Primary Taxonomy207RA0401X

Provider Legal NameDR. LAWRENCE DAVID MASSCredential: M.D.

Location Address435 2ND AVENew York, NY 10010-3101

Mailing Address435 2nd AveNew York, NY 10010-3101 · (212) 726-6823

Phone(212) 726-6823

Sole ProprietorNo

Enumeration DateApril 12, 2007

Last NPPES UpdateDecember 3, 2012

✔ NPI 1609090349 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Addiction MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RA0401X

License✔ Licensed in NY · 127475

Definition

An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine.

435 2ND AVE, New York, NY 10010

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Other Providers at the Same Location NPPES

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

MR. KARL WAYNE MILLER PHYSICIAN ASSISTANT

Physician Assistant (Medical)

435 2ND AVE
NEW YORK, NY 10010

New York County (212) 726-6824

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 Lawrence Mass's NPI number?

The NPI number for Lawrence Mass is 1609090349. It was assigned to this individual provider in the NPPES registry on April 12, 2007.

Where is Lawrence Mass located?

Lawrence Mass practices at 435 2nd Ave, New York, NY 10010. The listed phone number is (212) 726-6823.

What is Lawrence Mass's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

When was this NPI record last updated?

The NPPES record for Lawrence Mass was last updated on December 3, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.