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

Individual provider Obstetrics & Gynecology Physician · NPI 1659746477

Dr. Kassandra Kay McMillen, MD is an Obstetrics/Gynecology in Castle Rock, Colorado. Graduated from University of Arkansas College of Medicine in 2014, 12 years ago. Practices with Portercare Adventist Health System, a 767-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
12
Trained at
University of Arkansas College of Medicine
Licensed in
CO
In the registry since
2015
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

2350 Meadows Blvd
Castle Rock, CO 80109-8405
Phone: (720) 455-0350
Fax: (720) 455-0351
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 10350 E Dakota Ave, Denver, CO 80247-1314 — (303) 338-4545

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence DR0060302 (CO)

Record details

NPI number1659746477
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 4, 2015
Last updated in NPPESFebruary 26, 2025
Certification dateFebruary 26, 2025

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF ARKANSAS COLLEGE OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Portercare Adventist Health System — 767 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Castle Rock