Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. MARILYN DENISE RITHOLZ PH.D.
NPI 1295789642
Psychologist - Counseling in Boston, MA

Active since May 20, 2006PECOS Enrolled
1 JOSLIN PL, BOSTON, MA 02215(617) 732-2594(617) 713-3410 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Marilyn Denise Ritholz Ph.d. NPPES

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

DR. MARILYN DENISE RITHOLZ PH.D. (NPI 1295789642) is an individual counseling provider in Boston, Massachusetts, licensed in Massachusetts (4198) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295789642
Entity TypeIndividualFemale
Primary Taxonomy103TC1900X
Provider Legal NameDR. MARILYN DENISE RITHOLZCredential: PH.D.
Location Address1 JOSLIN PLBoston, MA 02215-5306
Mailing Address33 Bedford St, Suite 20Lexington, MA 02420-4319 · (781) 863-1439 · Fax (781) 863-2646
Fax(617) 713-3410
Sole ProprietorNo
Enumeration DateMay 20, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1295789642 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologist · CounselingBehavioral Health & Social Service Providers
Taxonomy Code103TC1900X
License Licensed in MA · 4198
Definition

A psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and physical health concerns people may have at different stages in their lives, focusing on typical life stresses and more severe issues with which people may struggle as individuals and as a part of families, groups and organizations. Counseling psychologists help people with physical, emotional and mental health issues improve their sense of well-being, alleviate feelings of distress and resolve crises. They also provide assessment, diagnosis, and treatment of more severe psychological symptoms.

1 JOSLIN PL, Boston, MA 02215

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Marilyn Denise Ritholz Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

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

Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, ROOM 470
BOSTON, MA 02215
Dietitian, Registered
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, JOSLIN DIABETES CENTER
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL, THE JOSLIN CLINIC
BOSTON, MA 02215
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1 JOSLIN PL
BOSTON, MA 02215
Ophthalmology
1 JOSLIN PL
BOSTON, MA 02215
Internal Medicine (Nephrology)
1 JOSLIN PL
BOSTON, MA 02215
Social Worker (Clinical)
1 JOSLIN PL, ROOM 360
BOSTON, MA 02215

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1295789642, enumerated as an "individual" on May 20, 2006.

The provider is located at 1 JOSLIN PL BOSTON, MA 02215 and the phone number is (617) 732-2594.

Psychologist with taxonomy code 103TC1900X and a focus in Counseling.

The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield and Harvard. Please consult your insurance carrier or call the provider to verify.