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Specialties
Board Certification
American Board of Internal Medicine (Internal Medicine)American Board of Internal Medicine (Sub: Critical Care Medicine)American Board of Internal Medicine (Sub: Pulmonary Disease)American Board of Internal Medicine (Sub: Sleep Medicine)American Board of Sleep MedicineNational Board of Medical ExaminersPatient Rating
5.0 /5( out of 133 reviews )The patient rating score is an average of all responses on our patient experience survey. The rating averages scores for all questions about care from our providers.
The scale on which responses are measured is 1 to 5 with 5 being the best score.
Patient Comments
Patient comments are gathered from our patient experience survey and displayed in their entirety. For the convenience of our visitors, some patient comments have been translated from their original language into English while preserving their original meaning as accurately as possible. Patients are de-identified for confidentiality and patient privacy.
October 26, 2025UNIVERSITY HOSPITALDr. Keenan is one of the best Drs I have seen! She is caring, knowledgeable, compassionate, thorough, and takes time to explain things so you can understand, she is a great Doctor!
October 12, 2025UNIVERSITY HOSPITALDr Keenan is smart and kind, always very helpful!
October 12, 2025UNIVERSITY HOSPITALShe's the best doctor! She cares about the patient.
September 20, 2025UNIVERSITY HOSPITALShe is the best. I feel I have a personal relationship with a doctor committed to providing me with the very best care possible. I trust her and appreciate how she works with me ¿ a nd for me.
September 09, 2025UNIVERSITY HOSPITALDr. Keenan is THE best pulmonologist I have ever been to and that includes several in NYC established and highly recommended practices.
September 07, 2025UNIVERSITY HOSPITALDr Keenan is wonderful, professional and knowledgeable. We are extremely happy with her management of my daughter's lung disorder and would highly recommend her.
September 07, 2025UNIVERSITY HOSPITALShe will answer all questions honestly and with patience
August 29, 2025UNIVERSITY HOSPITALDr.Keenan is one of the best DR I have had she is a caring person and professional always keeps me updated on my condition
August 24, 2025UNIVERSITY HOSPITALDr. Keenan doesn't just go by the computer test results. She physically examines your body. Then she takes time to make sure you understand everything. She also listens carefully .
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Board Certification and Academic Information
Academic Departments Internal Medicine -Associate Professor (Clinical)
Academic Divisions Public Health
Board Certification American Board of Internal Medicine (Internal Medicine)American Board of Internal Medicine (Sub: Critical Care Medicine)American Board of Internal Medicine (Sub: Pulmonary Disease)American Board of Internal Medicine (Sub: Sleep Medicine)American Board of Sleep MedicineNational Board of Medical ExaminersEducation history
Fellowship Critical Care Medicine - University of Washington Fellow Fellowship Pulmonary Disease - Madigan Army Medical Center Fellow Residency Internal Medicine - Madigan Army Medical Center Resident Internship Internal Medicine - Madigan Army Medical Center Intern Professional Medical Medicine - Jefferson Medical College M.D. Undergraduate Biology and Religion - La Salle University B.A. Selected Publications
Journal Article
- Aberegg SK, Cirulis MM, Maddock SD, Freeman A, Keenan LM, Pirozzi CS, Raman SM, Schroeder J, Mann H, Callahan SJ (2020). Clinical, Bronchoscopic, and Imaging Findings of e-Cigarette, or Vaping, Product Use-Associated Lung Injury Among Patients Treated at an Academic Medical Center. JAMA Netw Open, 3(11), e2019176. (Read full publication)
- Keenan LM, Hoffman TL (2019). Refractory Status Asthmaticus: Treatment With Sevoflurane. Fed Pract, 36(10), 476-479. (Read full publication)
Letter
- Maddock SD, Cirulis MM, Callahan SJ, Keenan LM, Pirozzi CS, Raman SM, Aberegg SK (2019). Pulmonary Lipid-Laden Macrophages and Vaping. [Letter to the editor]. N Engl J Med, 381(15), 1488-1489. (Read full publication)
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