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Peter Lennarson, MD

Peter Lennarson, MD

Clinical Interest for Patients

Degenerative and traumatic spinal disorders--from the base of the skull down to the neck and back as well as the tail bone and sacro-iliac joints. Cranio-vertebral junction disorders. (Arnold) Chiari Malformation. Carpal tunnel syndrome and Ulnar neuropathy. Minimal Access / minimally invasive surgical techniques.

Care Philosophy

While having practiced the full breadth of neurosurgery my work has increasingly focused on the many complicated spine problems that so many suffer from. From outpatient, minimally invasive surgeries to large complex deformity operations there is no problem too little nor too great that does not interest me. Even as a surgeon, it is still my hope to help you in non-surgical ways when possible, but I will be committed to developing whatever plan is required to solve your problems. I place great emphasis on helping you understand your problem in straight forward terms. I will respect you as a partner in maintaining your health and will listen and seek to understand your questions and concerns so that we can work together to make treatment plans that meet your needs.

Personal Interests

I have a passion for my work and continue to study and learn the science and art of neurosurgery and spine surgery even outside the traditional work environment. I am often engrossed in contemplating a new treatment or surgical procedure and figuring out how I can adopt it to better the lives of my patients. Outside of my profession I enjoy the Colorado outdoors including hiking, trail running, biking, skiing, fishing and camping. Best of all is when I can combine these activities with my wife and 5 boys.

2150 Stadium Drive
2nd Floor
Boulder, CO 80309


Phone Hours:
Monday - Friday 8am - 4pm
(off during lunch 12pm - 1pm)

Office Hours:
Monday - Thursday 7am - 7pm
Friday 6:30am - 6:30pm
Saturday 7am - 11:30am


Patients seeking sports medicine and orthopedic care can be seen in person Monday – Friday from 7am – 5pm. Please call (303)315-9900 to schedule an appointment. Tele-Health Visits are still available if preferred.

Patients seeking advanced medical imaging can be seen Monday – Friday 7am – 5:30pm. Please call (303) 315-9901 to schedule an appointment.

Physical therapy is available for in-person visits Monday – Friday from 7am – 7pm and Saturday 7am – 11:30am. If you would like to schedule a Physical Therapy appointment or to contact your Physical Therapist please call (303) 315-9917.

Phone hours are Monday - Friday 8:00am - 4:00pm (off during lunch 12pm - 1pm) .

Please park in the patient parking lot just north of the Champions Center and bring your license plate number to the second floor at check in.