Active NPI
Bryan C Gieszl, MD
- Internal Medicine Physician
- Aspen, CO
National Provider Identifier
1881644649
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 44470
- Practice address
- 101 Founders PL Ste 109
Aspen, CO 81611-1476 - Phone
- (970) 920-0104
- Fax
- (970) 920-0124
- NPI assigned
- May 11, 2006
- 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 |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 44470 | CO | Primary |
Addresses
Primary practice location
101 Founders PL Ste 109
Aspen, CO 81611-1476
Mailing address
101 Founders PL Ste 109
Aspen, CO 81611-1476
Phone (970) 920-0104
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 57428361 | Medicaid | CO |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CO
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Internal Medicine
- Education
- University of California, Geffen School of Medicine, 2003
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
401 Castle Creek Rd
Aspen, CO 81611-1159
Phone (970) 544-1120
Hospital & facility affiliations
- Aspen Valley Hospital District
- Valley View Hospital Association
Merit-based Incentive Payment System (MIPS)
- Final score
- 7.27 of 100
- Quality
- 0
- Improvement activities
- 0
- Cost
- 24.24
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Removal of skin lesions | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 44470 | CO | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Aspen Medical Care, PC | Current | Accepting new patients |
Locations
101 Founders Pl
Ste 109
Aspen, CO 81611
Phone (970) 279-4111
Interoperability endpoints
- bryangieszl@amcc.allscriptsdirect.net
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.
-
- Multi-Specialty Clinic/Center
- Aspen, CO
- NPI 1003306168
-
- Family Medicine Physician
- Aspen, CO
- NPI 1154451367
Hospital & facility affiliations 6
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Critical Access Hospital
- Aspen, CO
- NPI 1518960814
-
- Durable Medical Equipment & Medical Supplies
- Aspen, CO
- NPI 1942357363
Hospital
-
- Ambulatory Surgical Clinic/Center
- Basalt, CO
- NPI 1649885849
Hospital
-
- General Acute Care Hospital
- Glenwood Springs, CO
- NPI 1982668133
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147305600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1763683200000",
"number": "1881644649",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "101 FOUNDERS PL STE 109",
"city": "ASPEN",
"state": "CO",
"postal_code": "816111476",
"telephone_number": "970-920-0104",
"fax_number": "970-920-0124"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "101 FOUNDERS PL STE 109",
"city": "ASPEN",
"state": "CO",
"postal_code": "816111476",
"telephone_number": "970-920-0104",
"fax_number": "970-920-0124"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GIESZL",
"first_name": "BRYAN",
"middle_name": "C",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-05-11",
"last_updated": "2025-11-21",
"certification_date": "2025-11-21",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "CO",
"license": "44470",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "57428361",
"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 Nov 21, 2025; 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.