MARCELA HORVITZ-LENNON MD
NPI 1528189073
Psychiatry & Neurology - Psychiatry in Somerville, MA
About Marcela Horvitz-lennon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARCELA HORVITZ-LENNON MD (NPI 1528189073) is an individual psychiatry provider in Somerville, Massachusetts, licensed in Massachusetts (153879) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS, is affiliated with Cambridge Health Alliance, and is a graduate of Other (1987).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Marcela Horvitz-lennon Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Marcela Horvitz-lennon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cambridge, MA 02139
- Reassigned Medicare billing, Massachusetts enrollment
- 362 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cambridge Health Alliance
Acute Care Hospitals · Cambridge, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02145 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Marcela Horvitz-lennon's NPI number?
The NPI number for Marcela Horvitz-lennon is 1528189073. It was assigned to this individual provider in the NPPES registry on April 3, 2007.
Where is Marcela Horvitz-lennon located?
Marcela Horvitz-lennon practices at 26 Central Street Suite 1135-E, Somerville, MA 02145. The listed phone number is (617) 591-6300.
What is Marcela Horvitz-lennon's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Marcela Horvitz-lennon enrolled in Medicare?
Yes. Marcela Horvitz-lennon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Marcela Horvitz-lennon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marcela Horvitz-lennon reassigns Medicare benefits to Cambridge Public Health Commission (Cambridge, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marcela Horvitz-lennon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marcela Horvitz-lennon accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Marcela Horvitz-lennon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Marcela Horvitz-lennon affiliated with any hospitals?
According to CMS data, Marcela Horvitz-lennon is affiliated with Cambridge Health Alliance.
When was this NPI record last updated?
The NPPES record for Marcela Horvitz-lennon was last updated on August 20, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Marcela Horvitz-Lennon, MD · NPI 1528189073
Psychiatry physician in Somerville, Massachusetts. Individual provider, active in the CMS NPPES registry since April 3, 2007.
## Identity
- **NPI:** 1528189073 (Entity type: Individual)
- **Enumerated:** April 3, 2007
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 153879 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 26 CENTRAL STREET, SUITE 1135-E, Somerville, MA 02145
- **Phone:** (617) 591-6300
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Cambridge Public Health Commission (NPI 1487603585, Cambridge, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1987
## Record status
- **NPPES last updated:** August 20, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1528189073) · Data from the CMS NPPES public registry.