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

Ryan Constancio Alonzo

Individual provider Internal Medicine Physician · NPI 1184253445

Ryan Constancio Alonzo is an Internal Medicine in Denver, Colorado. Graduated from University of Colorado School of Medicine, Denver in 2023, 3 years ago. Practices with Denver Health and Hospital Authority, a 829-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
3
Trained at
University of Colorado School of Medicine, Denver
Licensed in
CO
In the registry since
2020
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Practice location Address checks out

777 Bannock St
Denver, CO 80204-4597
Phone: (303) 436-4949
Fax: (303) 602-8176
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 13001 East 17th Place, Aurora, CO 80045 — (303) 724-1784

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence DR.0070181 (CO)

Record details

NPI number1184253445
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 7, 2020
Last updated in NPPESMarch 31, 2025
Certification dateMarch 31, 2025
Mailing address777 Bannock St, Denver, CO 80204-4597

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated 2023 (3 years in practice)
Group practice Denver Health And Hospital Authority — 829 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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