Active NPI
Karl Edward Hammermeister, M.D.
- Cardiovascular Disease Physician
- Denver, CO
National Provider Identifier
1194909390
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Cardiovascular Disease Physician
- License
- 25783
- Practice address
- 3000 East Cedar
#4 Polo Place
Denver, CO 80209 - Phone
- (303) 778-8014
- NPI assigned
- Dec 24, 2007
- Sex
- Male
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Cardiovascular Disease Physician | 207RC0000X | 25783 | CO | Primary |
Addresses
Primary practice location
3000 East Cedar
#4 Polo Place
Denver, CO 80209
Mailing address
3000 East Cedar
#4 Polo Place
Denver, CO 80209
Phone (303) 778-8014
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
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 25783 | CO | MD | Cardiovascular Disease Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1198454400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1785628800000",
"number": "1194909390",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3000 EAST CEDAR",
"address_2": "#4 POLO PLACE",
"city": "DENVER",
"state": "CO",
"postal_code": "80209",
"telephone_number": "303-778-8014"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3000 EAST CEDAR",
"address_2": "#4 POLO PLACE",
"city": "DENVER",
"state": "CO",
"postal_code": "80209",
"telephone_number": "303-778-8014"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HAMMERMEISTER",
"first_name": "KARL",
"middle_name": "EDWARD",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2007-12-24",
"last_updated": "2026-08-02",
"status": "A"
},
"taxonomies": [
{
"code": "207RC0000X",
"taxonomy_group": "",
"desc": "Internal Medicine, Cardiovascular Disease",
"state": "CO",
"license": "25783",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Denver, CO
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 2, 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.