Don Blackburn, OD
Don Blackburn, OD is a provider specialising in Vision Therapy Optometrist in Wilmington, DE, registered under NPI 1639271216. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 3105 LIMESTONE RD STE 102, Wilmington, DE 19808. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| OEG000275 | PA | Optometrist |
| OEG000275 | PA | Vision Therapy Optometrist primary |
| OEG000275 | PA | Optician |
| I3-0001218 | DE | Vision Therapy Optometrist |
| I3-0001218 | DE | Optometrist |
| I3-0001218 | DE | Sports Vision Optometrist |
Licences are recorded in 2 states: PA, DE. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Optometry
- PAC ID
- 4183697261
- Enrollment ID
- I20040818000474
Medicare enrolment is recorded as approved under the provider type Practitioner - Optometry. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: Delaware and Pennsylvania. The practice address on file is in Wilmington, DE, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- I3-0001218
- Specialty
- Vision Therapy Optometrist
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Vision Therapy covers
Optometrists who specialize in vision therapy as a treatment process used to improve vision function. It includes a broad range of developmental and rehabilitative treatment programs individually prescribed to remediate specific sensory, motor and/or visual perceptual dysfunctions. NUCC Health Care Provider Taxonomy, code 152WV0400X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 152W00000X | Optometrist | OEG000275 | PA | |
| 152WV0400X | Vision Therapy Optometrist Vision Therapy | OEG000275 | PA | primary |
| 156FX1800X | Optician Optician | OEG000275 | PA | |
| 152WV0400X | Vision Therapy Optometrist Vision Therapy | I3-0001218 | DE | |
| 152W00000X | Optometrist | I3-0001218 | DE | |
| 152WS0006X | Sports Vision Optometrist Sports Vision | I3-0001218 | DE |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1639271216 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 2, 2006 |
| Last updated | Mar 17, 2014 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | OD |
| Practice address |
3105 LIMESTONE RD STE 102 Wilmington, DE 19808 (302) 998-1395 Fax (302) 998-6784 |
| Other identifiers |
13029981395
· Other 221393 · Other 258125 · Other (DE) 341988702 · Other (DE) 341988702 · Other 3684782 · Other 5178130 · Other DE03105 · Other |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 3 | 9 | 2 | 7 | 1 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 6 | 9 | 4 | 7 | 2 | 2 | 2 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.