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

Catherine A. Ryan, MD

Individual provider Gynecology Physician · NPI 1730295940

Catherine A. Ryan, MD is an Obstetrics/Gynecology in Boulder, Colorado. Qualified in 1998, 28 years ago. Practices with Obstetrix Medical Group of Colorado P C, a 34-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
28
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

4745 Arapahoe Ave Ste 110
Boulder, CO 80303-1082
Phone: (303) 444-5110
Fax: (303) 444-7457
Show map & directions

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

Specialties & licences

Gynecology Physician (primary) Taxonomy 207VG0400X · Licence 40191 (CO)

Record details

NPI number1730295940
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 21, 2006
Last updated in NPPESApril 6, 2017
Mailing address4745 Arapahoe Ave Ste 110, Boulder, CO 80303-1082

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Obstetrix Medical Group Of Colorado P C — 34 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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