THERESA A. SIMPSON LCSW
NPI 1376778449
Social Worker - Clinical in Portland, ME
About Theresa A. Simpson Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THERESA A. SIMPSON LCSW (NPI 1376778449) is an individual clinical provider in Portland, Maine, licensed in Maine (LC6842) and active in the NPI registry since May 2009. She is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 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
Theresa A. Simpson Lcsw 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
2Medicare enrollment records show Theresa Simpson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, ME 04101
- Reassigned Medicare billing, Maine enrollment
- 3,140 clinicians in this Medicare group
Nashua, NH 03064
- Reassigned Medicare billing, Maine enrollment
- 125 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 2
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 04101 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Theresa Simpson's NPI number?
The NPI number for Theresa Simpson is 1376778449. It was assigned to this individual provider in the NPPES registry on May 19, 2009. The provider is also known as Theresa Anne Martin.
Where is Theresa Simpson located?
Theresa Simpson practices at 84 Marginal Way, Portland, ME 04101. The listed phone number is (207) 774-5816.
What is Theresa Simpson's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Theresa Simpson enrolled in Medicare?
Yes. Theresa Simpson 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 Theresa Simpson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Simpson reassigns Medicare benefits to 2 organizations: Mainehealth (Portland, ME) and The Counseling Center Of Nashua Inc (Nashua, NH). 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 Theresa Simpson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Theresa Simpson accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Theresa Simpson 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 Theresa Simpson was last updated on May 22, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Theresa A. Simpson, LCSW · NPI 1376778449
Clinical provider in Portland, Maine. Individual provider, active in the CMS NPPES registry since May 19, 2009.
## Identity
- **NPI:** 1376778449 (Entity type: Individual)
- **Enumerated:** May 19, 2009
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** LC6842 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 84 MARGINAL WAY, Portland, ME 04101-2443
- **Phone:** (207) 774-5816 · **Fax:** (207) 523-8595
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mainehealth (NPI 1265912067, Portland, ME); The Counseling Center Of Nashua Inc (NPI 1144275389, Nashua, NH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** May 22, 2019
- **Other identifiers:** Medicaid 432087899 (ME)
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Source: [NPI Profile](https://npiprofile.com/npi/1376778449) · Data from the CMS NPPES public registry.