Active NPI
David Jacob Singer, MD, FACS
- Ophthalmology Physician
- Aspen, CO
National Provider Identifier
1902801806
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Ophthalmology Physician
- License
- 19894
- Practice address
- Eye Care Institute of Aspen, PC
402 West Main Street
Aspen, CO 81611-1616 - Phone
- (970) 920-2500
- Fax
- (970) 920-0024
- NPI assigned
- Jun 16, 2005
- 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 |
|---|---|---|---|---|
| Ophthalmology Physician | 207W00000X | 19894 | CO | Primary |
Addresses
Primary practice location
Eye Care Institute of Aspen, PC
402 West Main Street
Aspen, CO 81611-1616
Mailing address
Eye Care Institute of Aspen, PC
402 West Main Street
Aspen, CO 81611-1616
Phone (970) 920-2500
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01198944 | Medicaid | CO |
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)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 19894 | CO | MD | Ophthalmology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1118880000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1902801806",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "EYE CARE INSTITUTE OF ASPEN, PC",
"address_2": "402 WEST MAIN STREET",
"city": "ASPEN",
"state": "CO",
"postal_code": "816111616",
"telephone_number": "970-920-2500",
"fax_number": "970-920-0024"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "EYE CARE INSTITUTE OF ASPEN, PC",
"address_2": "402 WEST MAIN STREET",
"city": "ASPEN",
"state": "CO",
"postal_code": "816111616",
"telephone_number": "970-920-2500",
"fax_number": "970-920-0024"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SINGER",
"first_name": "DAVID",
"middle_name": "JACOB",
"credential": "MD, FACS",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-06-16",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207W00000X",
"taxonomy_group": "",
"desc": "Ophthalmology",
"state": "CO",
"license": "19894",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "01198944",
"state": "CO"
}
],
"endpoints": [],
"other_names": []
}Other providers in Aspen, CO
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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.