Dr. Steven S Chase, DDS

Dr. Steven S Chase is a General Practice Dentistry provider (Dentist) practicing in San Rafael, CA, registered in the NPPES registry with NPI 1639398092 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Jacqueline Kotula, DDS, Inc. (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1639398092
Entity type	Individual (Type 1)
Name	Dr. Steven S Chase
Credential	DDS
Sex	Male
Practice address	San Rafael, CA, 94903
Phone	4154997700
Fax	4154997769
Enumeration date	2007-04-24
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
1223G0001X	General Practice Dentistry	Primary	37319	CA

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: Steven Chase, DDS
NPI: 1639398092
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: San Rafael, CA, 94903

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1457008179	Jacqueline Kotula, DDS, Inc.	Organization	Dental Clinic/Center	San Rafael, CA

Verify this record

Cross-check NPI 1639398092 against the authoritative CMS record: view Dr. Steven S Chase 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 Steven Chase?

Steven Chase is registered in NPPES with the primary taxonomy of General Practice Dentistry. 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.