Dr. Robert Kleinberg
Dr. Robert Kleinberg is a Optometrist provider (Optometrist) practicing in Tustin, CA, registered in the NPPES registry with NPI 1598815052 since 2007. Practices at Kelly Tran Optometry, Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1598815052 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Robert Kleinberg |
| Sex | Male |
| Practice address | Tustin, CA, 92782 |
| Phone | 7147310215 |
| Enumeration date | 2007-01-10 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 152W00000X | Optometrist | Primary | 9781T | CA |
Copy-ready billing details
Provider: Robert Kleinberg NPI: 1598815052 Taxonomy: 152W00000X (Optometrist) Address: Tustin, CA, 92782
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1093783797 | Kelly Tran | Individual | Optometrist | Tustin, CA |
| 1306994041 | Kelly Tran Optometry, Inc | Organization | Optometrist | Tustin, CA |
Verify this record
Cross-check NPI 1598815052 against the authoritative CMS record: view Dr. Robert Kleinberg 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
How do I verify Robert Kleinberg's NPI record?
Is NPI 1598815052 active?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.