Active NPI
Nathan Cornwall
- Optometrist
- Spirit Lake, IA
National Provider Identifier
1316876576
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Optometrist
- License
- 139000
- Practice address
- 2312 23Rd St
Spirit Lake, IA 51360-1044 - Phone
- (712) 336-1960
- NPI assigned
- May 14, 2026
- 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 | 139000 | IA | Primary |
Addresses
Primary practice location
2312 23Rd St
Spirit Lake, IA 51360-1044
Mailing address
2312 23Rd St
Spirit Lake, IA 51360-1044
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: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: No
- Hospice: Yes
Care Compare profile
Medicare Care Compare- Specialty
- Optometry
- Education
- Other, 2026
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
2312 23Rd St
Spirit Lake, IA 51360-1044
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 139000 | IA | MD | Optometrist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1778716800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1778716800000",
"number": "1316876576",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2312 23RD ST",
"city": "SPIRIT LAKE",
"state": "IA",
"postal_code": "513601044"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2312 23RD ST",
"city": "SPIRIT LAKE",
"state": "IA",
"postal_code": "513601044",
"telephone_number": "712-336-1960"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CORNWALL",
"first_name": "NATHAN",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-05-14",
"last_updated": "2026-05-14",
"certification_date": "2026-05-14",
"status": "A"
},
"taxonomies": [
{
"code": "152W00000X",
"taxonomy_group": "",
"desc": "Optometrist",
"state": "IA",
"license": "139000",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Spirit Lake, IA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 14, 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.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.