LOUISA EILEEN MARTIN PMHCNS-BC
NPI 1669439337
Nurse Practitioner - Psychiatric/Mental Health in Waltham, MA
About Louisa Eileen Martin Pmhcns-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LOUISA EILEEN MARTIN PMHCNS-BC (NPI 1669439337) is an individual psychiatric/mental health provider in Waltham, Massachusetts, licensed in Massachusetts (238093) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2001).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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
Louisa Eileen Martin Pmhcns-bc 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 Reassignments
4Medicare enrollment records show Louisa Martin reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Waltham, MA 02451
- Reassigned Medicare billing, Massachusetts enrollment
- 11 clinicians in this Medicare group
Carlisle, MA 01741
- Reassigned Medicare billing, Massachusetts enrollment
Chelmsford, MA 01824
- Reassigned Medicare billing, Massachusetts enrollment
- 38 clinicians in this Medicare group
Lowell, MA 01852
- Reassigned Medicare billing, Massachusetts enrollment
- 51 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02451 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALTHAM, MA 02451
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 Louisa Martin's NPI number?
The NPI number for Louisa Martin is 1669439337. It was assigned to this individual provider in the NPPES registry on April 27, 2006. The provider is also known as Louisa Eileen Schlee Cns.
Where is Louisa Martin located?
Louisa Martin practices at 210 Bear Hill Rd Suite 202, Waltham, MA 02451. The listed phone number is (781) 966-0070.
What is Louisa Martin's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Louisa Martin enrolled in Medicare?
Yes. Louisa Martin 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 organizations bill Medicare for Louisa Martin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Louisa Martin reassigns Medicare benefits to 4 organizations: Waltham Behavioral Health LLC (Waltham, MA), Sage Mental Health (Carlisle, MA), Comprehensive Health Services LLC (Chelmsford, MA) and Bridgewell, Inc (Lowell, MA). Each 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 Louisa Martin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Louisa Martin accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Louisa Martin 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.
When was this NPI record last updated?
The NPPES record for Louisa Martin was last updated on January 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Louisa Eileen Martin, PMHCNS-BC · NPI 1669439337
Psychiatric/Mental Health physician in Waltham, Massachusetts. Individual provider, active in the CMS NPPES registry since April 27, 2006.
## Identity
- **NPI:** 1669439337 (Entity type: Individual)
- **Enumerated:** April 27, 2006
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 238093 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 210 BEAR HILL RD, SUITE 202, Waltham, MA 02451-1023
- **Phone:** (781) 966-0070 · **Fax:** (781) 915-0755
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Waltham Behavioral Health LLC (NPI 1427453000, Waltham, MA); Sage Mental Health (NPI 1275271058, Carlisle, MA); Comprehensive Health Services LLC (NPI 1053786236, Chelmsford, MA); Bridgewell, Inc (NPI 1033262860, Lowell, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** January 27, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1669439337) · Data from the CMS NPPES public registry.