Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Louise Hom, M.D.

Q: What is the NPI number for Louise Hom?

The National Provider Identifier (NPI) for Louise Hom is 1649275330, a Type 1 (individual) record in the CMS NPPES registry.

Surgery Physician in Castro Valley, CA · enumerated 2005.

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

National Provider Identifier

1649275330

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Registry record

Entity type Individual (Type 1)

Name Dr. Louise Hom

Credential M.D.

Sex Female

Practice address 20130 Lake Chabot Rd, Ste 202, Castro Valley, CA, 94546

Phone (510) 583-8192

Enumeration date Jun 17, 2005

Last updated in NPPES Jun 27, 2019

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License G62353 (CA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Louise Hom?

The National Provider Identifier (NPI) for Louise Hom is 1649275330, a Type 1 (individual) record in the CMS NPPES registry.

Where does Louise Hom practice?

The practice location on file with NPPES is in Castro Valley, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-27.