Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Annie Derthick, PHD

Family Psychologist in Lewiston, ME · enumerated 2015.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1689039422

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Registry record

Entity type Individual (Type 1)

Name Annie Derthick

Credential PHD

Sex Female

Practice address 76 High St, Lewiston, ME, 04240

Phone (207) 795-2800

Enumeration date Dec 21, 2015

Last updated in NPPES Sep 13, 2018

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 107779 (AK) Secondary

103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License PS1563 (ME) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Annie Derthick?

Annie Derthick is registered in NPPES with the primary taxonomy of Family Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Dale Sotherland Pulmonary Disease Physician · Lewiston, ME NPI 1386637627 Edmund Claxton Family Medicine Physician · Lewiston, ME NPI 1881680072 Neil Duval Pulmonary Disease Physician · Lewiston, ME NPI 1669451217 Jenae Limoges Specialist · Lewiston, ME NPI 1679552244 Deana Albert Adult Health Nurse Practitioner · Lewiston, ME NPI 1578543278 Bruce Kenney Family Medicine Physician · Lewiston, ME NPI 1629058185 Catherine Clement Family Nurse Practitioner · Lewiston, ME NPI 1437139698 James Melloh Family Medicine Physician · Lewiston, ME NPI 1760453856

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-13.