Dr. William Kenneth Tom, D.D.S., M.S.

Dr. William Kenneth Tom is a Oral and Maxillofacial Surgery (Dentist) provider (Dentist) practicing in Ukiah, CA, registered in the NPPES registry with NPI 1720206899 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Northern California Medical Assoc Inc (listed at the same practice address in NPPES).

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NPI	1720206899
Entity type	Individual (Type 1)
Name	Dr. William Kenneth Tom
Credential	D.D.S., M.S.
Sex	Male
Practice address	620 S DORA ST, SUITE 205, Ukiah, CA, 95482
Phone	7074626983
Enumeration date	2007-04-23
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223S0112X	Oral and Maxillofacial Surgery (Dentist)	Primary	37747	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: William Tom, D.D.S., M.S.
NPI: 1720206899
Taxonomy: 1223S0112X (Oral and Maxillofacial Surgery (Dentist))
Address: 620 S DORA ST, SUITE 205, Ukiah, CA, 95482

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1639134638	Anthony Morris	Individual	Acupuncturist	Ukiah, CA
1568573327	George Morarasu	Individual	General Practice Dentistry	Ukiah, CA
1558580324	Steven Boettger	Individual	Oral and Maxillofacial Surgery (Dentist)	Ukiah, CA
1598067720	Northern California Medical Assoc Inc	Organization	Pulmonary Disease Physician	Ukiah, CA

Verify this record

Cross-check NPI 1720206899 against the authoritative CMS record: view Dr. William Kenneth Tom 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

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 William Tom?

William Tom is registered in NPPES with the primary taxonomy of Oral and Maxillofacial Surgery (Dentist). The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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