Highlights
Age Groups Seen
- Infant 0-2
- Child 3-12
- Adolescent 13-17
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- English
Gender
MaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Andrew L. Mammen
Primary Academic Title
Adjunct Professor of Neurology
Independent Clinician
Additional Academic Titles
Adjunct Professor of Medicine
Locations
- Johns Hopkins Bayview Medical Center
- 4940 Eastern Avenue, Bayview Medical Offices, Level 01 (G), Clinic 5, Baltimore, MD 21224
- Get Directions
- phone: 443-997-1552
- fax: 410-550-1033
Expertise
Education
- Fellowship: Johns Hopkins University School of Medicine, Neurophysiology, 2006
- Residency: Johns Hopkins University School of Medicine, Neurology, 2004
- Medical Education: Johns Hopkins University School of Medicine, MD PhD, 2000
Board Certifications
- Neuromuscular Medicine: American Board of Psychiatry and Neurology, 2012
- Neurology: American Board of Psychiatry and Neurology, 2006
Ratings & Reviews
5 out of 5
37 ratings, 17 reviewsThe Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.
- 5 out of 5 starsReviewed on 3/11/2026
Dr Mammen is the best
- 5 out of 5 starsReviewed on 3/6/2026
Very caring and knowledgeable
- 5 out of 5 starsReviewed on 1/16/2026
Dr. Andrew Mammen is absolutely the very best doctor in every category. He is smart! He is kind! He is a great listener! He is great about explaining things! He never makes you fell rushed! I feel so unbelievably lucky that he has been my guiding light throughout my journey with Myositis!
- 5 out of 5 starsReviewed on 1/16/2026
Dr Mammen is one of the best in the country to see for my extremely rare neuromuscular disease. He is my last hope for a diagnosis as he truly understands rare atypical disease related to myositis. My presentation is more atypical than anyone has encountered including Dr Mammen.
- 5 out of 5 starsReviewed on 11/7/2025
Honest, listens well, explains things well. Not hurried. Smiles.
- 5 out of 5 starsReviewed on 11/7/2025
Dr. Mammen has expertly and warmly managed my rare myopathy condition since May 2019. I am very fortunate to be his patient.
- 5 out of 5 starsReviewed on 10/3/2025
Very good care
- 5 out of 5 starsReviewed on 10/3/2025
He has provided excellent care backed by trustworthy research in this rare autoimmune disorder.
- 5 out of 5 starsReviewed on 10/3/2025
Dr Mammen has been my Doctor since 2007 when the Myositis center opened at JH. He returned quality of life back to me I was very ill with Dermatomyositis at the onset of the disease and was not effectively treated for it until I arrived at JH myositis center. Dr Mammen is the best doctor in the Universe. Its not only his knowledge and skill but his amazing personality.
- 5 out of 5 starsReviewed on 9/5/2025
I feel he's the best in his feel and he's always kind and nice
- 5 out of 5 starsReviewed on 8/1/2025
Very engaged and interested in my perspective
- 5 out of 5 starsReviewed on 8/1/2025
My doctor is caring and listens to what I have to say. He is concerned for my well being!
- 5 out of 5 starsReviewed on 7/11/2025
Dr. Mammen is an excellent physician who listens to my concerns during my visits, asks if I'm comfortable with his treatment suggestions, and very effectively communicates with me.
- 5 out of 5 starsReviewed on 6/6/2025
Simply the best! Dr Mammen is an extraordinary diagnostician who developed a treatment plan that has helped me enormously. He is a great communicator and caregiver.
- 5 out of 5 starsReviewed on 6/6/2025
All good
- 5 out of 5 starsReviewed on 5/9/2025
Dr. Mammen is fantastic, I know that I may be a difficult case, but I still appreciate the effort, care, and digestible explanations to my non-PHD questions.
- 5 out of 5 starsReviewed on 5/9/2025
Dr Mammen is terrific