Summary

Dr. Mark Simmons specializes in internal medicine and pediatrics, providing comprehensive care for patients of all ages. He earned his medical degree from the University of Kansas School of Medicine, where he also completed his residency training. With 34 years of experience in practice, Dr. Simmons brings extensive knowledge to patient care. He communicates with patients in English.

Dr. Simmons practices at several locations including Poudre Valley Hospital and UCHealth Medical Center of the Rockies in Fort Collins and Loveland, Colorado, as well as Oro Valley Hospital in Arizona. His clinical expertise includes treating conditions such as rhinitis and various allergies. He offers specialized treatments including allergen immunotherapy and sublingual immunotherapy to help patients manage their allergic reactions. Patients have given him an average rating of 5.0, reflecting their confidence in his care.

AI-generated from data on this provider profile.

Quick Facts

  • 5
  • 34 years of experience
  • speaks English
  • University Of Kansas School Of Medicine
  • 2 specialties
  • 8 areas of expertise
  • 2 board certifications
  • 4 hospital affiliations
  • 3 office locations
  • Male

Office Locations

Dr. Mark Stuart Simmons has 3 locations

Poudre Valley Hospital

1024 S Lemay AveFort Collins, CO 80524

Uchealth Medical Center Of The Rockies

2500 Rocky Mountain AveLoveland, CO 80538

Oro Valley Hospital

1551 E Tangerine RdOro Valley, AZ 85755

Compare with Similar Doctors

Dr. Mark Stuart Simmons, MD
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Dr. Mark Stuart Simmons, MDDr. Julia Cuervo, MDEric HarkerDr. Michelle Xiao Song, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients
3.8 
3.9 
34 Years of Experience 23 Years of Experience 25 Years of Experience 6 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available Virtual Visit Available
Speaks English Speaks Spanish, German Speaks English Speaks English, Mandarin, Spanish
Fort Collins , COBerthoud , COLyons , CODenver , CO
Med School: University Of Kansas School Of Medicine Med School: Univ Of Tx Hlth Sci Ctr At San Antonio Joe R & Teresa Lozano Long Schof Med Med School: Duke University School Of Medicine Med School: UCLA's David Geffen School of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Mark Stuart Simmons

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Mark Stuart Simmons has the following 2 specialties

Specialty Expertise

Dr. Mark Stuart Simmons has the following 8 areas of expertise

  • Check-up
  • Heartburn
  • Immunization
  • Pediatrics
  • Physical
  • Vaccination
  • Weight Loss
  • Weight Loss (non-surgical)

Certifications, License, & Education

34 Years Experience

MEDICAL LICENSE

Medical Doctor, Colorado, 2025, Expired
Medical Doctor, Arizona, 2026, Active

EDUCATION & TRAINING

Residency

University Of Kansas School Of Medicine

Medical School

University Of Kansas School Of MedicineGraduated in 1992

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Frequently Asked Questions

Is Dr. Mark Simmons accepting new patients?
Dr. Mark Simmons has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Mark Simmons speak?
Dr. Mark Simmons speaks English.
Does Dr. Mark Simmons accept my insurance?
You can see the insurance plans that Dr. Mark Simmons accepts on their Vitals profile.
Does Dr. Mark Simmons accept virtual/telehealth appointments?
Dr. Mark Simmons has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Mark Simmons?
You can find contact information for Dr. Mark Simmons here on Vitals.

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