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

Dr. Brian P O'Sullivan

Individual provider Internal Medicine Physician · NPI 1801926662

Dr. Brian P O'Sullivan is an Internal Medicine in Centennial, Colorado. Graduated from Geisel School of Medicine at Dartmouth in 1993, 33 years ago. Practices with Colorado Permanente Medical Group PC, a 1,325-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
33
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
CO
In the registry since
2007
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Practice location Address checks out

5555 E Arapahoe Rd
Centennial, CO 80122-2312
Phone: (303) 338-4545
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 43257 (CO)

Record details

NPI number1801926662
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 7, 2007
Last updated in NPPESJune 3, 2021
Certification dateJune 3, 2021
Mailing address10350 E Dakota Ave, Denver, CO 80247-1314

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 1993 (33 years in practice)
Group practice Colorado Permanente Medical Group Pc — 1325 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Centennial