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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Timothy S. Johnston, M.D. PC

Primary Care Clinic/Center in Merced, CA · enumerated 2022 · authorized official Janette Purslow, Credentialing Coordinator.

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

National Provider Identifier

1427793371

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Registry record

Entity type Organization (Type 2)
Legal business name Timothy S. Johnston, M.D. PC
Other name <Unavail>
Parent organization Timothy S. Johnston MD, PC
Practice address 3180 Collins Dr Ste A, Merced, CA, 95348
Phone (209) 259-4301
Fax (209) 354-4932
Enumeration date May 4, 2022
Last updated in NPPES May 13, 2022

Taxonomy & classification

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Janette Purslow
Title Credentialing Coordinator
Phone (209) 349-8459

Other identifiers

Identifier Type State Issuer
1528097847 Medicaid CA -

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.

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Frequently asked questions

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2022-05-13. Verify at npiregistry.cms.hhs.gov.
Where is Timothy S. Johnston, M.D. PC located?
The practice location on file with NPPES is in Merced, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-13.