Dr. Greg J Blash, DDS
Dr. Greg J Blash is a Dentist provider (Dentist) practicing in Corona, CA, registered in the NPPES registry with NPI 1215139704 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Seth Bernstein Od and Lisa Benham Od Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1215139704 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Greg J Blash |
| Credential | DDS |
| Sex | Male |
| Practice address | 2791 GREEN RIVER RD, #104, Corona, CA, 92882 |
| Phone | 9512793939 |
| Fax | 9512790914 |
| Enumeration date | 2007-06-05 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | DG33910 | CA |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: Greg Blash, DDS NPI: 1215139704 Taxonomy: 122300000X (Dentist) Address: 2791 GREEN RIVER RD, #104, Corona, CA, 92882
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1518936947 | Lisa Benham | Individual | Optometrist | Corona, CA |
| 1881653954 | Seth Bernstein | Individual | Optometrist | Corona, CA |
| 1659405058 | Seth Bernstein Od and Lisa Benham Od Inc | Organization | Optometrist | Corona, CA |
| 1689845984 | Adriana Benton | Individual | Mental Health Counselor | Corona, CA |
| 1235306630 | Jose Meza | Individual | Mental Health Counselor | Corona, CA |
| 1154558112 | Craig Mclaughlin | Individual | Marriage & Family Therapist | Corona, CA |
Verify this record
Cross-check NPI 1215139704 against the authoritative CMS record: view Dr. Greg J Blash 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 2007-07-08.