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

Karen Ratner, MD

Individual provider Internal Medicine Physician · NPI 1740391739

Karen Ratner, MD is an Internal Medicine Physician in Littleton, Colorado. Licensed in Colorado. Registered with an NPI since 2006.

Licensed in
CO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7750 S Broadway Ste 100
Littleton, CO 80122-2623
Phone: (303) 347-9897
Fax: (303) 347-9912
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 20266 (CO)

Record details

NPI number1740391739
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 31, 2006
Last updated in NPPESJuly 21, 2015
Mailing address7750 S Broadway, Suite 100, Littleton, CO 80122-2623

Other providers in Littleton