Active NPI
Nelson Stephen Delgado, O.D.
- Optometrist
- Columbia, MD
National Provider Identifier
1770601106
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Optometrist
- License
- MD1273
- Practice address
- 10300 Little Patuxent Pkwy
Suite 1005-B
Columbia, MD 21044-3341 - Phone
- (410) 740-9952
- Fax
- (410) 740-9731
- NPI assigned
- Mar 26, 2007
- 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 | MD1273 | MD | Primary |
Addresses
Primary practice location
10300 Little Patuxent Pkwy
Suite 1005-B
Columbia, MD 21044-3341
Mailing address
10300 Little Patuxent Pkwy
Suite 1005-B
Columbia, MD 21044-3341
Phone (410) 740-9952
Other names 1
- Dr. N. Stephen Delgado
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 |
|---|---|---|---|
| MD1273 | MD | MD | Optometrist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Katzen Medical Associates, PC | Optometrist | Past | Accepting new patients |
| Delgado & Associates LLC | Optometrist | Past | Accepting new patients |
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Corneal and Contact Management Optometrist
- Owings Mills, MD
- NPI 1588875637
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1174867200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1762387200000",
"number": "1770601106",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "10300 LITTLE PATUXENT PKWY",
"address_2": "SUITE 1005-B",
"city": "COLUMBIA",
"state": "MD",
"postal_code": "210443341",
"telephone_number": "410-740-9952",
"fax_number": "410-740-9731"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "10300 LITTLE PATUXENT PKWY",
"address_2": "SUITE 1005-B",
"city": "COLUMBIA",
"state": "MD",
"postal_code": "210443341",
"telephone_number": "410-740-9952",
"fax_number": "410-740-9731"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DELGADO",
"first_name": "NELSON",
"middle_name": "STEPHEN",
"name_prefix": "Dr.",
"credential": "O.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2007-03-26",
"last_updated": "2025-11-06",
"certification_date": "2025-11-06",
"status": "A"
},
"taxonomies": [
{
"code": "152W00000X",
"taxonomy_group": "",
"desc": "Optometrist",
"state": "MD",
"license": "MD1273",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "N. STEPHEN",
"last_name": "DELGADO",
"prefix": "DR.",
"credential": "O.D.",
"code": "5",
"type": "Other Name"
}
]
}Other providers in Columbia, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 6, 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.