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

Dr. Karen Elaine Hayes, DO

Individual provider Obstetrics & Gynecology Physician · NPI 1578581195

Dr. Karen Elaine Hayes, DO practises Obstetrics/Gynecology in Fort Collins, Colorado. Graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1990, 36 years ago. Practices with Ob-Gyn Affiliates, a 66-clinician group and accepts Medicare assignment. Licensed in Colorado and Wyoming.

Years since qualifying
36
Trained at
Des Moines University of Osteopathic Medicine and Health Sciences
Licensed in
CO, WY
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1224 E Elizabeth St
Fort Collins, CO 80524-4007
Phone: (970) 221-4977
Fax: (970) 221-4980
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 37437 (CO)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence 14389C (WY)

Record details

NPI number1578581195
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedJuly 18, 2006
Last updated in NPPESJune 15, 2022
Certification dateJune 15, 2022

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolDES MOINES UNIVERSITY OF OSTEOPATHIC MEDICINE AND HEALTH SCIENCES
Graduated 1990 (36 years in practice)
Group practice Ob-Gyn Affiliates — 66 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients33
Services billed 74 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Poudre Valley Hospital Hospital · Fort Collins, CO

Colleagues at Ob-Gyn Affiliates

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 66 clinicians in the practice; 12 are shown here.

Other providers in Fort Collins