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Physician Directory

Dr. Gregory P. Hahn, MD


  • 1505 Saint Alphonsus Way
    Alamo, CA 94507
  • 1 Location
  • (925) 838-7337

Dr. Hahn's Overview

Dr. Gregory P. Hahn graduated from the University of California, San Francisco School of Medicine in 1973. He works in Alamo, CA and specializes in Pediatrics and Adolescent Medicine. Dr. Hahn is affiliated with John Muir Medical Center Walnut Creek. He speaks English and Spanish.

Gender: Male

Languages Spoken: English, Spanish

Dr. Hahn's Experience

Years in Practice: 42

Conditions Treated by Dr. Hahn

  • Acne
  • Acute bronchitis
  • Acute conjunctivitis
  • Acute pharyngitis
  • Acute sinusitis
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Procedures Performed by Dr. Hahn

  • Audiology Evaluation
  • Destruction of benign/premalignant skin lesions
  • Immunization administration
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Dr. Hahn's Specialties

Pediatrics, Adolescent Medicine

Dr. Hahn's Education & Training

Medical School: University of California, San Francisco School of Medicine; Graduated 1973

Dr. Hahn's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna HMO Deductible Plan CA members only
  • Aetna Managed Choice POS Open Access
  • BCBS Blue Card PPO
  • Blue Cross CA CaliforniaCare HMO
  • Blue Cross CA PPO
  • Blue Cross CA Select Plus HMO
  • Blue Shield CA Access Plus Savenet
  • Blue Shield CA Basic EPO Bronze level HIX
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Dr. Hahn's Office Information & Appointments

Office Locations

John Muir Medical Group
John Muir Physician Network

1505 Saint Alphonsus Way
Alamo, CA 94507
(925) 838-7337


Office Hours and Information

Fax: (925) 838-5775

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: No

Medicaid Accepted: No

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

Other Physicians in Dr. Hahn's Practice

Dr. Hahn's Hospital Affiliations

Office Locations