DR. MICHAELA MENDELSOHN PH.D.
NPI 1003837097
Psychologist - Group Psychotherapy in Cambridge, MA

Q: What is Michaela Mendelsohn's NPI number?

The NPI number for Michaela Mendelsohn is 1003837097. It was assigned to this individual provider in the NPPES registry on July 22, 2006.

Q: What is Michaela Mendelsohn's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Group Psychotherapy, with taxonomy code 103TP2701X.

Q: Is Michaela Mendelsohn enrolled in Medicare?

No. Michaela Mendelsohn has opted out of Medicare through April 1, 2027. 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.

Active since July 22, 2006Opted out of Medicare · through Apr 1, 2027

1675 MASSACHUSETTS AVE, 2ND FLOOR, CAMBRIDGE, MA 02138(617) 429-3523 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Michaela Mendelsohn Ph.d. NPPES

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

DR. MICHAELA MENDELSOHN PH.D. (NPI 1003837097) is an individual group psychotherapy provider in Cambridge, Massachusetts, licensed in Massachusetts (8211) and active in the NPI registry since July 2006. She has opted out of Medicare through April 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1003837097

Entity TypeIndividualFemale

Primary Taxonomy103TP2701X

Provider Legal NameDR. MICHAELA MENDELSOHNCredential: PH.D.

Location Address1675 MASSACHUSETTS AVE, 2ND FLOORCambridge, MA 02138-1836

Mailing Address1675 Massachusetts Ave, 2nd FloorCambridge, MA 02138-1836 · (617) 429-3523

Phone(617) 429-3523

Sole ProprietorYes

Enumeration DateJuly 22, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1003837097 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychologist · Group PsychotherapyBehavioral Health & Social Service Providers

Taxonomy Code103TP2701X

License✔ Licensed in MA · 8211

Definition

A psychologist who specializes in group psychology and group psychotherapy that is an evidenced-based specialty that prepares group leaders to identify and capitalize on developmental and healing possibilities embedded in the interpersonal/intrapersonal functioning of individual group members as well as collectively for the group. Emphasis is placed on the use of group dynamics to assist and treat individual group members. The specialty is applicable to all age groups, children, adolescents, adults and older adults, for a wide variety of conditions and concerns, and in numerous and diverse settings.

Also ListedPsychologistTaxonomy 103T00000X · License 8211 (MA)

Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License 8211 (MA)

1675 MASSACHUSETTS AVE, Cambridge, MA 02138

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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. Michaela Mendelsohn Ph.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 April 1, 2015 through April 1, 2027.

Opt-Out Effective DateApril 1, 2015

Opt-Out In Effect ThroughApril 1, 2027Opt-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 4

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

DR. LORRAINE L. GRAY PH.D.

Psychologist (Clinical)

1675 MASSACHUSETTS AVE, SUITE 1B
CAMBRIDGE, MA 02138

Middlesex County (617) 816-4587

DR. MELISSA PALMER BRAND PSYD

Psychologist (Clinical)

1675 MASSACHUSETTS AVE, SUITE 1B
CAMBRIDGE, MA 02138

Middlesex County (617) 547-9777

LV MENTAL HEALTH COUNSELING, LLC

Counselor (Mental Health)

1675 MASSACHUSETTS AVE
CAMBRIDGE, MA 02138

Middlesex County (617) 925-6581

DR. DEBORAH ANN PECK PSY.D.

Psychologist (Clinical)

1675 MASSACHUSETTS AVE, SUITE 1 B
CAMBRIDGE, MA 02138

Middlesex County (617) 797-5971

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 Michaela Mendelsohn's NPI number?

The NPI number for Michaela Mendelsohn is 1003837097. It was assigned to this individual provider in the NPPES registry on July 22, 2006.

Where is Michaela Mendelsohn located?

Michaela Mendelsohn practices at 1675 Massachusetts Ave 2nd Floor, Cambridge, MA 02138. The listed phone number is (617) 429-3523.

What is Michaela Mendelsohn's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Group Psychotherapy, with taxonomy code 103TP2701X.

Is Michaela Mendelsohn enrolled in Medicare?

No. Michaela Mendelsohn has opted out of Medicare through April 1, 2027. 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 Michaela Mendelsohn 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 10 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.