Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Donald Lee Hillock Jr., DDS

General Practice Dentistry in Modesto, CA · enumerated 2007 · practices at Modesto Urgent Care Inc.

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

National Provider Identifier

1356497499

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Registry record

Entity type Individual (Type 1)

Name Dr. Donald Lee Hillock Jr.

Credential DDS

Sex Male

Practice address 1908 Coffee Rd., Bldg. 4, Modesto, CA, 95355

Phone (209) 522-8800

Fax (209) 522-5126

Enumeration date Jan 25, 2007

Last updated in NPPES Apr 14, 2015

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 30787 (CA) Primary

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

Is NPI 1356497499 active?

Yes, as of the latest NPPES snapshot, NPI 1356497499 is active (record last updated 2015-04-14).

How do I verify Donald Hillock's NPI record?

Cross-check NPI 1356497499 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Modesto Urgent Care Inc Urgent Care Clinic/Center · Modesto, CA NPI 1780816017 Ashley Hillock General Practice Dentistry · Modesto, CA NPI 1548953557

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-14.