Active NPI
Katherine Diem Anh Loi, OD
- Optometrist
- Bel Air, MD
National Provider Identifier
1689558272
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Optometrist
- License
- ORT011227
- Practice address
- 2316 Arthurs Woods Dr
Bel Air, MD 21015-8926 - Phone
- (410) 569-8258
- NPI assigned
- Aug 5, 2025
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Optometrist | 152W00000X | 3105 | MD | |
| Optometrist | 152W00000X | ORT011227 | NY | Primary |
Addresses
Primary practice location
2316 Arthurs Woods Dr
Bel Air, MD 21015-8926
Mailing address
2316 Arthurs Woods Dr
Bel Air, MD 21015-8926
Phone (410) 569-8258
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 3105 | MD | MD | Optometrist |
| ORT011227 | NY | MD | Optometrist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1754352000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1754352000000",
"number": "1689558272",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2316 ARTHURS WOODS DR",
"city": "BEL AIR",
"state": "MD",
"postal_code": "210158926",
"telephone_number": "410-569-8258"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2316 ARTHURS WOODS DR",
"city": "BEL AIR",
"state": "MD",
"postal_code": "210158926",
"telephone_number": "410-569-8258"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LOI",
"first_name": "KATHERINE",
"middle_name": "DIEM ANH",
"name_prefix": "Dr.",
"credential": "OD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2025-08-05",
"last_updated": "2025-08-05",
"certification_date": "2025-08-05",
"status": "A"
},
"taxonomies": [
{
"code": "152W00000X",
"taxonomy_group": "",
"desc": "Optometrist",
"state": "MD",
"license": "3105",
"primary": false
},
{
"code": "152W00000X",
"taxonomy_group": "",
"desc": "Optometrist",
"state": "NY",
"license": "ORT011227",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Bel Air, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 5, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.