Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Rowena Tessmann, PMH-NP, PHD

Individual provider Adult Psychiatric/Mental Health Clinical Nurse Specialist · NPI 1073531422

Rowena Tessmann, PMH-NP, PHD is an Adult Psychiatric/Mental Health Clinical Nurse Specialist in Waterville, Maine. Licensed in Maine. Registered with an NPI since 2006.

Licensed in
ME
In the registry since
2006
Specialties on file
3
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

58 Elm St
Waterville, ME 04901
Phone: (207) 680-2065
Fax: (207) 680-2068
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence AP 081192 (ME)
Adult Psychiatric/Mental Health Clinical Nurse Specialist Taxonomy 364SP0809X · Licence R038001 (ME)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence R038001 (ME)

Record details

NPI number1073531422
Entity typeIndividual (Type 1)
GenderFemale
Credentials PMH-NP , PHD
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESJuly 13, 2009