Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Silvia Susana Grindle, PHYSICIAN ASSISTANT
Physician Assistant in Poway, CA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598056392
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Registry record
Entity type Individual (Type 1)
Name Ms. Silvia Susana Grindle
Credential PHYSICIAN ASSISTANT
Sex Female
Practice address 13525 Midland Rd, Suite F, Poway, CA, 92064
Phone (858) 486-9100
Fax (858) 486-9101
Enumeration date Apr 27, 2011
Last updated in NPPES Apr 27, 2011
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA21499 (CA) Primary
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 Silvia Grindle?
Silvia Grindle 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
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-27.