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DR. AMY RUTH GERSON PHD
NPI 1316087901
Psychologist - Health Service in Lexington, MA

Active since February 06, 2007Opted out of Medicare · through Jan 18, 2028
21A MUZZEY ST, LEXINGTON, MA 02421(781) 862-5623(781) 860-5268 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Amy Ruth Gerson Phd NPPES

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

DR. AMY RUTH GERSON PHD (NPI 1316087901) is an individual health service provider in Lexington, Massachusetts, licensed in Massachusetts (4753) and active in the NPI registry since February 2007. She has opted out of Medicare through January 18, 2028.

NPPES Registry Identity

NPI1316087901
Entity TypeIndividualFemale
Primary Taxonomy103TH0100X
Provider Legal NameDR. AMY RUTH GERSONCredential: PHD
Location Address21A MUZZEY STLexington, MA 02421-5202
Mailing Address12 Clematis RdLexington, MA 02421-7117 · (781) 862-5623 · Fax (781) 860-5268
Phone(781) 862-5623
Fax(781) 860-5268
Sole ProprietorYes
Enumeration DateFebruary 6, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1316087901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 6

★ Primary SpecialtyPsychologist · Health ServiceBehavioral Health & Social Service Providers
Taxonomy Code103TH0100X
License✔ Licensed in MA · 4753
Definition
A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).
Also ListedPsychologistTaxonomy 103T00000X · License 4753 (MA)
Also ListedPsychologist · Adult Development & AgingTaxonomy 103TA0700X · License 4753 (MA)
Also ListedPsychologist · CounselingTaxonomy 103TC1900X · License 4753 (MA)
Also ListedPsychologist · Clinical Child & AdolescentTaxonomy 103TC2200X · License 4753 (MA)
Also ListedPsychologist · FamilyTaxonomy 103TF0000X · License 4753 (MA)
21A MUZZEY ST, Lexington, MA 02421
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Other Names 1

Former Name (1)Amy Ruth Cohen

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. Amy Ruth Gerson Phd 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 January 18, 2020 through January 18, 2028.

Opt-Out Effective DateJanuary 18, 2020
Opt-Out In Effect ThroughJanuary 18, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 2

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

HILZENRATH AND LEVINE ORTHODONTICS, LLC
Dentist (Orthodontics and Dentofacial Orthopedics)
21A MUZZEY ST
LEXINGTON, MA 02421
Middlesex County (781) 860-9473
DR. ANTONIA HALTON
Psychologist
21A MUZZEY ST
LEXINGTON, MA 02421
Middlesex County (781) 862-5623

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 Amy Gerson's NPI number?

The NPI number for Amy Gerson is 1316087901. It was assigned to this individual provider in the NPPES registry on February 6, 2007. The provider is also known as Amy Ruth Cohen.

Where is Amy Gerson located?

Amy Gerson practices at 21A Muzzey St, Lexington, MA 02421. The listed phone number is (781) 862-5623.

What is Amy Gerson's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Health Service, with taxonomy code 103TH0100X.

Is Amy Gerson enrolled in Medicare?

No. Amy Gerson has opted out of Medicare through January 18, 2028. 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 Amy Gerson was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.