MARTHA BALDWIN
NPI 1891280855
Nurse Practitioner - Psychiatric/Mental Health in Waterville, ME
About Martha Baldwin NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARTHA BALDWIN (NPI 1891280855) is an individual psychiatric/mental health provider in Waterville, Maine, licensed in Maine (CNP181150) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
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
Martha Baldwin 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 Martha Baldwin reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Augusta, ME 04330
- Reassigned Medicare billing, Maine enrollment
- 59 clinicians in this Medicare group
Bangor, ME 04401
- Reassigned Medicare billing, Maine enrollment
- 28 clinicians in this Medicare group
Bangor, ME 04401
- Reassigned Medicare billing, Maine enrollment
- 348 clinicians in this Medicare group
Saco, ME 04072
- Reassigned Medicare billing, Maine enrollment
- 200 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 04901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Martha Baldwin's NPI number?
The NPI number for Martha Baldwin is 1891280855. It was assigned to this individual provider in the NPPES registry on June 22, 2018. The provider is also known as Kate Baldwin Pmhnp.
Where is Martha Baldwin located?
Martha Baldwin practices at 40 Waterville Commons Dr # 1017, Waterville, ME 04901. The listed phone number is (207) 573-2479.
What is Martha Baldwin's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Martha Baldwin enrolled in Medicare?
Yes. Martha Baldwin 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 Martha Baldwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martha Baldwin reassigns Medicare benefits to 4 organizations: State Of Maine (Augusta, ME), Acadia Healthcare, Inc (Bangor, ME), Acadia Hospital Corp (Bangor, ME) and Sweetser (Saco, ME). 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 Martha Baldwin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Martha Baldwin accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Martha Baldwin 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 Martha Baldwin was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Martha Baldwin · NPI 1891280855
Psychiatric/Mental Health physician in Waterville, Maine. Individual provider, active in the CMS NPPES registry since June 22, 2018.
## Identity
- **NPI:** 1891280855 (Entity type: Individual)
- **Enumerated:** June 22, 2018
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** CNP181150 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 40 WATERVILLE COMMONS DR # 1017, Waterville, ME 04901-4900
- **Phone:** (207) 573-2479 · **Fax:** (207) 544-5168
## 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): State Of Maine (NPI 1386887008, Augusta, ME); Acadia Healthcare, Inc (NPI 1568477297, Bangor, ME); Acadia Hospital Corp (NPI 1215940523, Bangor, ME); Sweetser (NPI 1538122445, Saco, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** January 14, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1891280855) · Data from the CMS NPPES public registry.