Jon L Siems MD Inc
Jon L Siems MD Inc is a healthcare organization registered as Ophthalmologic Surgery Clinic/Center in Temecula, CA, holding Type 2 (organization) NPI 1194243394 since 2017. The authorized official on file is Mary Porter, Practice Manager.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1194243394 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Jon L Siems MD Inc |
| Practice address | 31515 RANCHO PUEBLO RD STE 103, Temecula, CA, 92592 |
| Phone | 9513036111 |
| Fax | 9513024448 |
| Enumeration date | 2017-09-07 |
| Last updated in NPPES | 2023-03-07 |
Authorized official
| Name | Mary Porter |
|---|---|
| Title | Practice Manager |
| Phone | 9513036111 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 261QS0132X | Ophthalmologic Surgery Clinic/Center | Primary | 54383 | CA |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 54383 | Other | CA | CA MEDICAL LICENSE |
Copy-ready billing details
Provider: Jon L Siems MD Inc NPI: 1194243394 Taxonomy: 261QS0132X (Ophthalmologic Surgery Clinic/Center) Address: 31515 RANCHO PUEBLO RD STE 103, Temecula, CA, 92592
Verify this record
Cross-check NPI 1194243394 against the authoritative CMS record: view Jon L Siems MD Inc on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-03-07.