Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Isaac Trout Tullis, PA
Physician Assistant in Modesto, CA · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1326903824
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Registry record
Entity type Individual (Type 1)
Name Isaac Trout Tullis
Credential PA
Sex Male
Practice address 1409 E Briggsmore Ave, Modesto, CA, 95355
Phone (209) 544-6088
Enumeration date Dec 17, 2025
Last updated in NPPES Jun 29, 2026
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA67721 (CA) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA 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.
Frequently asked questions
What specialty is Isaac Tullis?
Isaac Tullis is registered in NPPES with the primary taxonomy of Physician Assistant. 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.
Other providers at this practice address
Browse all → Jaimie Cossey Surgical Physician Assistant · Modesto, CA NPI 1942290416 Raman Moradkhan Clinical Cardiac Electrophysiology Physician · Modesto, CA NPI 1427025766 Rodolfo Agbunag Surgery Physician · Modesto, CA NPI 1316995111 Tomasz Gutowski Surgery Physician · Modesto, CA NPI 1710935127 Gaspar Nazareno Gastroenterology Physician · Modesto, CA NPI 1326096603 Denise Wofford Medical Physician Assistant · Modesto, CA NPI 1265480768 Amar Pohwani Interventional Cardiology Physician · Modesto, CA NPI 1689622995 Mark Madsen Physician Assistant · Modesto, CA NPI 1407805757
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-29.