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Dr. William C. Lillydahl, MD


  • (303) 440-3000

Dr. Lillydahl's Overview

Dr. William C. Lillydahl graduated from the Duke University School of Medicine in 1974. He works in Boulder, CO and specializes in Otolaryngology. Dr. Lillydahl is affiliated with Avista Adventist Hospital and Boulder Community Hospital.

Dr. Lillydahl's Experience

Years in Practice: 41

Procedures Performed by Dr. Lillydahl

Dr. Lillydahl's Specialties


Dr. Lillydahl's Education & Training

Medical School: Duke University School of Medicine; Graduated 1974

Dr. Lillydahl's Rating

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Overall Rating


  • Explains conditions & treatments
  • Takes time to answer my questions
  • Provides follow-up as needed
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Dr. Lillydahl's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • Anthem Pathway X Enhanced Ind Direct Access CO
  • Anthem PPO
  • BCBS Blue Card PPO
  • Cofinity PPO
  • LifeWise Connect
  • Multiplan PPO
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Dr. Lillydahl's Office Information & Appointments

Office Locations

Boulder Medical Center

2750 Broadway St
Boulder, CO 80304
(303) 440-3000


Office Hours and Information

Fax: (303) 449-9380

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 8:30 AM - 5:00 PM
Tuesday 8:30 AM - 5:00 PM
Wednesday 8:30 AM - 5:00 PM
Thursday 8:30 AM - 5:00 PM
Friday 8:30 AM - 5:00 PM
Saturday Closed
Sunday Closed

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Dr. Lillydahl's Hospital Affiliations

Office Locations

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