1. Home
  2. Directory
  3. New York
  4. New York New York
  5. Psychiatry Neurology
  6. NPI Profile

CAROLINE BORDEN WILLIAMS M.D.
NPI 1316145204
Psychiatry & Neurology - Addiction Psychiatry in New York, NY

Active since July 03, 2007Opted out of Medicare · through May 14, 2028
50 LEXINGTON AVE, SUITE LL2, NEW YORK, NY 10010(347) 306-2169 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Caroline Borden Williams M.d. NPPES

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

CAROLINE BORDEN WILLIAMS M.D. (NPI 1316145204) is an individual addiction psychiatry provider in New York, New York, licensed in New York (226467) and active in the NPI registry since July 2007. She has opted out of Medicare through May 14, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1316145204
Entity TypeIndividualFemale
Primary Taxonomy2084P0802X
Provider Legal NameCAROLINE BORDEN WILLIAMSCredential: M.D.
Location Address50 LEXINGTON AVE, SUITE LL2New York, NY 10010-2935
Mailing Address50 Lexington Ave, Suite Ll2New York, NY 10010-2935 · (347) 306-2169
Phone(347) 306-2169
Sole ProprietorYes
Enumeration DateJuly 3, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1316145204 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Addiction PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0802X
License✔ Licensed in NY · 226467
Definition
Addiction Psychiatry is a subspecialty of psychiatry that focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License 226467 (NY)
50 LEXINGTON AVE, New York, NY 10010
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Caroline Borden Williams 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 May 14, 2016 through May 14, 2028.

Opt-Out Effective DateMay 14, 2016
Opt-Out In Effect ThroughMay 14, 2028Opt-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.

Other Providers at the Same Location NPPES 13

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

FRANCINE MAIRE P.T.
Specialist
50 LEXINGTON AVE, SUITE LL3
NEW YORK, NY 10010
New York County (212) 213-8866
STEPHEN S WEINBERG D.C.
Chiropractor
50 LEXINGTON AVE, #LL3
NEW YORK, NY 10010
New York County (212) 995-1515
DR. INGA BLOM PHD
Psychologist
50 LEXINGTON AVE, SUITE LL3
NEW YORK, NY 10010
New York County (646) 522-9525
MR. JACQUES NIR LCSW
Social Worker (Clinical)
50 LEXINGTON AVE, PROFESSIONAL SUITES 101
NEW YORK, NY 10010
New York County (646) 662-8431
DR. MAIA JAMADI PH.D.
Psychologist (Clinical)
50 LEXINGTON AVE, STE LL3
NEW YORK, NY 10010
New York County (718) 501-2197
JENA OPTICAL
Technician/Technologist (Optician)
50 LEXINGTON AVE
NEW YORK, NY 10010
New York County (212) 477-4250
PHYSIOTHERAPY REHABILITATION ORGANIZATION, P.C.
Specialist
50 LEXINGTON AVE, STELL3
NEW YORK, NY 10010
New York County (212) 213-8866
DR. MOLLY L GRIMES PSY.D.
Psychologist
50 LEXINGTON AVE, LEVEL C
NEW YORK, NY 10010
New York County (347) 414-6629

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 Caroline Williams's NPI number?

The NPI number for Caroline Williams is 1316145204. It was assigned to this individual provider in the NPPES registry on July 3, 2007.

Where is Caroline Williams located?

Caroline Williams practices at 50 Lexington Ave Suite Ll2, New York, NY 10010. The listed phone number is (347) 306-2169.

What is Caroline Williams's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Psychiatry, with taxonomy code 2084P0802X.

Is Caroline Williams enrolled in Medicare?

No. Caroline Williams has opted out of Medicare through May 14, 2028. 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 Caroline Williams was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.