ROCKY MOUNTAIN PULMONARY AND CRITICAL CARE MEDICINE - CONSULTANTS IN SLEEP, PULMONARY, AND CRITICAL CARE
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Pulmonary, Critical Care, and Sleep Physicians

John Ferguson, MD, MPH, FCCP

​Leah Wydro, DO

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Dr. Ferguson joined Rocky Mountain Pulmonary after completing his fellowship at the University of Colorado and National Jewish.  He is board certified in internal medicine, pulmonary medicine, neurocritical care, and critical care.  He has been recognized in 5280 magazine for pulmonary medicine, and by peak performers in hospital medicine for critical care medicine.  He has been awarded the collaborative practice award at Lutheran by the nursing staff in 2016, and the physician of the year by the medical staff in 2017.  Dr. Ferguson serves as the medical director of medical/cardiac and neurocritical care units at Lutheran Medical Center. 

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Dr. Wydro completed her pulmonary and critical care training at Parkview Medical Center, where she was chief fellow.  She was awarded the fellow of the year in 2021, as well as resident of the year in 2017.  She is currently board certified in internal medicine, pulmonary medicine, and critical care medicine. She has been nominated for physician of the year at Lutheran Hospital in 2023. Dr. Wydro serves as the pulmonary director at Lutheran Medical Center.

Todd Schlossman, MD

Daniil Gekhman, DO

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Dr. Schlossman completed his training in pulmonary and critical care medicine at Baylor University.  He is board certified in internal medicine, pulmonary medicine, and critical care medicine.

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Dr. Gekhman completed his training in internal medicine at Drexel (Hahnemann University Hospital) and the Hospital of the University of Pennsylvania in Philadelphia. He subsequently completed training in pulmonary and critical care medicine at Baylor College of Medicine in Houston, Texas where he served as chief fellow.  He is board certified in internal medicine, pulmonary medicine, and board-eligible in critical care medicine. He is passionate about patient-centered, efficient care. His professional interests include lung cancer screening and diagnosis, and pulmonary hypertension. His hobbies include DJ-ing, skiing, and weightlifting.


Maryann Sudmeier, NP

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Maryann has been a nurse practitioner since 2000. She practiced internal medicine for 15 years, followed by urgent care, and is happy to have joined Rocky Mountain Pulmonary and Critical Care. Prior to her nurse practitioner training, Maryann was an intensive care unit nurse at St. Anthony's central hospital. She completed her BSN program at Regis University in 1995, and returned to Regis for her Master's degree as a nurse practitioner.

RJ Balzen, NP

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RJ received his Bachelors of Science Nursing from Regis University.  He previously was an experienced intensive care unit nurse at Lutheran Medical Center and obtained his Master's degree from the University of Northern Colorado.  He currently works as a hospital-based nurse practitioner for Rocky Mountain Pulmonary and Critical Care

Robyn Cope, NP

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Robyn is an adult gerontology acute care nurse practitioner, working as a hospital-based practitioner for Rocky Mountain Pulmonary and Critical Care.  She graduated in 2019 with her Bachelor's degree in nursing and in 2019 with her Master's degree of nursing from the University of Northern Colorado.  She has years of experience in surgical and trauma intensive care units.

Linda Longcrier, NP

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Linda is the latest member to join our team at Rocky Mountain Pulmonary and Critical Care.  Linda has more than 20 years of intensive care unit experience as an Associate Degree Nursing graduate.  In 2017, she completed her Bachelors of Science in Nursing from the University of Texas at Arlington.  She went on to complete her Masters of Science Nursing in 2022 and joins our team as a hospital-based acute care Nurse Practitioner.

Brook Stevens, NP

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Brook is an Adult-Gerontology Acute Care Nurse Practioner, who obtained her Master's degree at the University of Colorado in 2021. Her background includes experience in inpatient and outpatient pulmonology, intensive care, surgery, and trauma.  She has over eight years of ICU nursing experience and is working as a hospital-based practitioner for Rocky Mountain Pulmonary and Critical Care.


5730 Ward Rd, Suite 201.  Arvada, CO 80002 
​Phone: 303-940-1661  Fax: 303-431-8708
  • Home
  • Meet Our Team
  • Sleep Services
  • Services/Resources
    • Services Provided
    • Procedure Information
    • Disease Information
    • Clinical Research
  • Referrals/Contact/Location
    • Patient Referral
    • Directions/Contact Information
    • Billing Disclosure
  • Patient Portal