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Dr. Sean R. O'Brien, MD

Allergy & Immunology

  • (410) 358-3000

Dr. O'Brien's Overview

Dr. Sean R. O'Brien graduated from the University of Chicago Pritzker School of Medicine in 1975. He works in Baltimore, MD and specializes in Allergy & Immunology and Pediatric Allergy/Immunology. Dr. O'Brien is affiliated with Sinai Hospital Of Baltimore.

Dr. O'Brien's Experience

Years in Practice: 40

Procedures Performed by Dr. O'Brien

Dr. O'Brien's Specialties

Allergy & Immunology, Pediatric Allergy/Immunology

Dr. O'Brien's Education & Training

Medical School: University of Chicago Pritzker School of Medicine; Graduated 1975

Dr. O'Brien'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. O'Brien's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Select
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO
  • CareFirst BlueChoice Advantage
  • CareFirst BlueChoice Ntwk POS
  • CareFirst BluePreferred PPO
  • CareFirst Maryland POS
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Dr. O'Brien's Office Information & Appointments

Office Locations

Sherman & Obrien Mds PA

6810 Park Heights Ave Ste C5
Baltimore, MD 21215
(410) 358-3000


Office Hours and Information

Fax: (410) 358-3146

Practice Website: Not Available

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: No

Monday 10:00 AM - 3:00 PM
Tuesday 11:00 AM - 7:00 PM
Wednesday 10:00 AM - 12:00 PM
Thursday 11:00 AM - 7:00 PM
Friday 10:00 AM - 1:00 PM
Saturday Closed
Sunday Closed

Other Physicians in Dr. O'Brien's Practice

  • Not Available

Dr. O'Brien's Hospital Affiliations

Office Locations

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