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

Leonard R Zemel, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1447256045

Leonard R Zemel, MD is an Endocrinology, Diabetes & Metabolism Physician in Denver, Colorado. Licensed in Colorado. Registered with an NPI since 2005.

Licensed in
CO
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3464 S Willow St # 280
Denver, CO 80231-4531
Phone: (303) 755-2900
Fax: (303) 755-0404
Show map & directions

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

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 27647 (CO)

Record details

NPI number1447256045
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 28, 2005
Last updated in NPPESNovember 13, 2007

Other providers in Denver