Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Melanie M Trowbridge, MD

Prescribing (Medical) Psychologist in Jackson, CA · enumerated 2008.

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

National Provider Identifier

1861644635

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Registry record

Entity type Individual (Type 1)

Name Melanie M Trowbridge

Credential MD

Sex Female

Practice address Jackson, CA, 95642

Phone (209) 257-0177

Fax (209) 257-0176

Enumeration date Oct 10, 2008

Last updated in NPPES Oct 10, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TP0016X Prescribing (Medical) Psychologist Behavioral Health & Social Service Providers · License G78564 (CA) Primary

103TP2701X Group Psychotherapy Psychologist Behavioral Health & Social Service Providers · License G78564 (CA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

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.

What specialty is Melanie Trowbridge?

Melanie Trowbridge is registered in NPPES with the primary taxonomy of Prescribing (Medical) Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Robert Young Obstetrics & Gynecology Physician · Jackson, CA NPI 1790777662 David Stone Pediatric Adolescent Medicine Physician · Jackson, CA NPI 1871566323 Denise Lack Nurse Practitioner · Jackson, CA NPI 1104839414 Vikram Kumar Pediatrics Physician · Jackson, CA NPI 1477656932 Amy Appleton Pediatrics Physician · Jackson, CA NPI 1134293459 Rachel Clay Women's Health Nurse Practitioner · Jackson, CA NPI 1679742951 Yosemite Pathology Medical Group, Inc Clinical Medical Laboratory · Jackson, CA NPI 1760657720 Aye Moe Pediatrics Physician · Jackson, CA NPI 1295053833

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-10.