About Us

Cathy Montgomery, RN | Roger Manning | Sandy Berreth, RN, CASC

Cathy Montgomery, RN

Position: President / Managing Partner

Cathy has over 20 years in healthcare services management. During her position as a Regional Manager for Barnes Hospital, she transitioned 6 physician practice groups to the newly purchased West County Hospital to stabilize hospital admissions. She also acquired and developed a rheumatology practice to further expand service lines.

As Regional Administrator for NovaMed, she oversaw operations of the physician practices as well as surgery centers, and optical shops in the metro St.Louis/Illinois area. Under her direction a state of the art refractive surgery center was designed and opened. Cathy obtained a large vision care contract that tripled the volume of procedures for the refractive physicians in her market.

Cathy is President and Founder of Excellentia Advisory Group, a consulting and development company serving both the surgical industry through ASC'S as well as surgical hospitals and the outpatient industry through physician practices and ancillary centers. Her vision is to offer services that will be cost effective for her clients and fill those gaps that occur due to immediate needs. She has hired employed consultants that are knowledgeable and follow TJC, AAAASF and/or AAAHC standards.

Roger Manning

Position: Managing Partner

Roger Manning has over 30+ years of health care management experience. Roger has had a full career of interfacing with physician decision-makers while working within the pharmaceutical, home health care, staffing and ambulatory surgery center industries. Roger started his career in territorial sales for 3-1/2 years calling upon physicians with Adria Laboratories. The remaining 30 years has consisted of human capital management positions ranging from single site Administrator management to multi-site national management roles with Adria Laboratories, Norrell Healthcare, Lincare, and LAB Healthcare. Roger has a strong operational business background and entrepreneural spirit creating several new companies....high-risk perinatal nursing home healthcare company, an executive search & recruitment firm and finally a healthcare consulting company focused upon the ambulatory surgery center and physician practice management industries.

Roger is a Managing Partner and Co-Founder of Excellentia Advisory Group and acts in the capacity of Managing Partner and VP of Development. Roger's main focus is the backdoor technical operations of Excellentia as well as new ASC business development opportunities.

Sandy Berreth, RN, BS, MS, CASC

Position: ASC Consultant

Sandy Berreth has 30+ years experience working in hospital operating rooms and surgery centers holding positions of clinical leadership and ASC Administrator roles.  For the past 13 years, Sandy has been a AAAHC Medicare Surveyor and has done a large volume of surgery center surveys around the United States.  Sandy has been a go-to person in the years past for speaking engagements at our conferences as well as for consultation on AAAHC accreditation guidelines.

Sandy joins Excellentia Advisory Group as an ASC Consultant and will be involved doing ASC mock surveys among other projects.