Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Martha Baldwin

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1891280855

Martha Baldwin is a Nurse Practitioner in Waterville, Maine. Qualified in 2018, 8 years ago. Practices with Sweetser, a 138-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maine.

Years since qualifying
8
Licensed in
ME
In the registry since
2018
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Practice location Address checks out

40 Waterville Commons Dr # 1017
Waterville, ME 04901-4900
Phone: (207) 573-2479
Fax: (207) 544-5168
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence CNP181150 (ME)

Record details

NPI number1891280855
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJune 22, 2018
Last updated in NPPESJanuary 14, 2026
Certification dateJanuary 14, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Sweetser — 138 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients15
Services billed 141 a service is one billed item, such as a visit, a test or a procedure
Average patient age52

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Sweetser

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 138 clinicians in the practice; 12 are shown here.

Other providers in Waterville