Dr. Jan Chess, PH.D

Dr. Jan Chess is a Mental Health Counselor provider (Counselor) practicing in Davis, CA, registered in the NPPES registry with NPI 1568507572 since 2007. The credential PHD stands for Doctor of Philosophy.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1568507572
Entity type	Individual (Type 1)
Name	Dr. Jan Chess
Credential	PH.D
Sex	Female
Practice address	Davis, CA, 95616
Phone	5307581162
Fax	5307581162
Enumeration date	2007-02-20
Last updated in NPPES	2007-07-08

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
101YM0800X	Mental Health Counselor	Primary	MFT 23874	CA

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

Copy-ready billing details

Provider: Jan Chess, PH.D
NPI: 1568507572
Taxonomy: 101YM0800X (Mental Health Counselor)
Address: Davis, CA, 95616

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1578528386	Sally Wood	Individual	Psychologist	Davis, CA
1023033875	Cathy Neuhauser	Individual	Clinical Psychologist	Davis, CA
1881602258	James Meinert	Individual	Dentist	Davis, CA
1568500312	Ann-Catrin Van	Individual	Clinical Psychologist	Davis, CA
1346486305	Erica Wright	Individual	Marriage & Family Therapist	Davis, CA

Verify this record

Cross-check NPI 1568507572 against the authoritative CMS record: view Dr. Jan Chess on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Jan Chess?

Jan Chess is registered in NPPES with the primary taxonomy of Mental Health Counselor. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.