Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Auston Daniel Stiefer

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1356972053

Auston Daniel Stiefer is an Internal Medicine in Aurora, Colorado. Graduated from University of Oklahoma College of Medicine in 2022, 4 years ago. Licensed in Colorado.

Years since qualifying
4
Trained at
University of Oklahoma College of Medicine
Licensed in
CO
In the registry since
2020
Specialties on file
3

Practice location Address checks out

12700 E 19th Ave # 9C03
Aurora, CO 80045-2560
Phone: (303) 724-9287
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence DR.0077405 (CO)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence DR.0077405 (CO)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence DR.0077405 (CO)

Record details

NPI number1356972053
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJanuary 31, 2020
Last updated in NPPESMarch 26, 2026
Certification dateMarch 26, 2026
Mailing address12700 E 19th Ave # 9c03, Aurora, CO 80045-2560

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 2022 (4 years in practice)
Accepts Medicare assignment Not indicated
Practice locations3 on file with Medicare

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