Active NPI
Gregory David Hansen, O.D.
- Optometrist
- Dubuque, IA
National Provider Identifier
1487616736
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Optometrist
- License
- 1941
- Practice address
- 4200 Dodge St
Dubuque, IA 52003-2624 - Phone
- (563) 582-3458
- NPI assigned
- Apr 3, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Optometrist | 152W00000X | 1941 | IA | Primary |
Addresses
Primary practice location
4200 Dodge St
Dubuque, IA 52003-2624
Mailing address
2920 Kristen CT
Dubuque, IA 52001-9010
Phone (563) 583-3173
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: No
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 1941 | IA | MD | Speech-Language Pathologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1144022400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1487616736",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2920 KRISTEN CT",
"city": "DUBUQUE",
"state": "IA",
"postal_code": "520019010",
"telephone_number": "563-583-3173",
"fax_number": "563-582-3558"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4200 DODGE ST",
"city": "DUBUQUE",
"state": "IA",
"postal_code": "520032624",
"telephone_number": "563-582-3458"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HANSEN",
"first_name": "GREGORY",
"middle_name": "DAVID",
"name_prefix": "Dr.",
"credential": "O.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-04-03",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "152W00000X",
"taxonomy_group": "",
"desc": "Optometrist",
"state": "IA",
"license": "1941",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Dubuque, IA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.