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TIMOTHY S. JOHNSTON, M.D. PC
NPI 1972483493
Otolaryngology in Merced, CA

Active since September 04, 2025
410 E YOSEMITE AVE STE B, MERCED, CA 95340(209) 934-8077 Get Directions Write a Review

NPPES record last updated: November 3, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 3, 2025, Sep 4, 2025 (2 updates tracked since 2025).

About Timothy S. Johnston, M.d. Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TIMOTHY S. JOHNSTON, M.D. PC (NPI 1972483493), doing business as Yosemite Ent, is a healthcare organization registered as an otolaryngology in Merced, California and active in the NPI registry since September 2025. The organization lists Janette Purslow, Credentialing Coordinator, as its authorized official.

NPPES Registry Identity

NPI1972483493
Entity TypeOrganization
Primary Taxonomy207Y00000X
Legal Business NameTIMOTHY S. JOHNSTON, M.D. PC
Location Address410 E YOSEMITE AVE STE BMerced, CA 95340-8220
Mailing Address3349 G St Ste FMerced, CA 95340-0978 · (209) 349-8459 · Fax (209) 580-4138
Phone(209) 934-8077
Organization SubpartYes
Authorized OfficialJanette PurslowCredentialing Coordinator · (209) 349-8459
Enumeration DateSeptember 4, 2025
Last NPPES UpdateNovember 3, 20252 updates tracked since enumeration
NPPES CertifiedNovember 3, 2025
✔ NPI 1972483493 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
Definition

An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

410 E YOSEMITE AVE STE B, Merced, CA 95340
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Other Names 1

Doing Business AsYosemite Ent

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. SHERRI ANN PRISAZNIK MA
Audiologist
410 E YOSEMITE AVE STE B
MERCED, CA 95340
Merced County (209) 722-9272
NICOLETTE PINOCCHIO FNP-C
Nurse Practitioner
410 E YOSEMITE AVE STE B
MERCED, CA 95340
Merced County (209) 934-8077
MARK STEVEN SPITZER
Otolaryngology
410 E YOSEMITE AVE STE B
MERCED, CA 95340
Merced County (209) 934-8077

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Timothy S. Johnston, M.D. PC's NPI number?

The NPI number for Timothy S. Johnston, M.D. PC is 1972483493. It was assigned to this organization in the NPPES registry on September 4, 2025. The provider is doing business as Yosemite ENT.

Where is Timothy S. Johnston, M.D. PC located?

Timothy S. Johnston, M.D. PC is located at 410 E Yosemite Ave Ste B, Merced, CA 95340. The listed phone number is (209) 934-8077.

What is Timothy S. Johnston, M.D. PC's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

When was this NPI record last updated?

The NPPES record for Timothy S. Johnston, M.D. PC was last updated on November 3, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.