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

MS. Michelle Ann O'Brien, DO

Individual provider Psychiatry Physician · NPI 1144601618

MS. Michelle Ann O'Brien, DO is a Psychiatry in Fort Collins, Colorado. Qualified in 2015, 11 years ago. Practices with Summitstone Health Partners, a 113-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
11
Licensed in
CO
In the registry since
2015
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.

See every abbreviation used in this directory →

Practice location Address checks out

2260 W Trilby Rd
Fort Collins, CO 80526-9650
Phone: (970) 494-4200
Fax: (844) 270-1824
Show map & directions

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

Additional practice locations (1)

  • 3655 E Grant Rd, Tucson, AZ 85716-2933 — (520) 670-3909

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence DR.0075316 (CO)

Record details

NPI number1144601618
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 10, 2015
Last updated in NPPESJuly 16, 2025
Certification dateJuly 16, 2025
Mailing address4856 Innovation Dr, Fort Collins, CO 80525-5539

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Also practisesADDICTION MEDICINE
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Summitstone Health Partners — 113 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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