Elisa Ignatius, MD, MSc
Infectious DiseasesHospital Medicine
Highlights
Age Groups Seen
- Infant 0-2
- Child 3-12
- Adolescent 13-17
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- French
- English
In-Network Plans
View All Accepted Plans (12)Gender
FemaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Elisa Ignatius
Professional Titles
Program Director, Johns Hopkins Center for Nontuberculosis Mycobacteria and Bronchiectasis Center
Primary Academic Title
Assistant Professor of Medicine
Johns Hopkins Physician
Background
Dr. Elisa H. Ignatius is an infectious diseases and clinical pharmacology specialist at the Johns Hopkins University School of Medicine. She is an expert in the care of patients with nontuberculous mycobacterial (NTM) infections, tuberculosis (TB), bronchiectasis, HIV/AIDS, and other general infectious diseases. Additionally, she provides teaching for medical students, residents, and fellows at the Johns Hopkins University School of Medicine.
Dr. Ignatius earned her M.D. and completed Internal Medicine residency at Emory University School of Medicine. She also obtained a Masters of Science in the Control of Infectious Diseases from the London School of Hygiene and Tropical Medicine, where her research focused on drug-resistant tuberculosis in South Africa. After completing residency, she worked as a co-investigator on HIV prevention clinical trials in Atlanta, Georgia. She then came to Johns Hopkins University where she completed fellowships in both Infectious Diseases and Clinical Pharmacology.
Dr. Ignatius’s research interests focus on treatment optimization strategies for mycobacterial infections (NTM and TB), including regimens of novel and standard drugs.
Find a Clinical Trial
View all trials by this principal investigator.
Additional Academic Titles
Assistant Professor of Physiology, Pharmacology and Therapeutics
Research Summary
Dr. Ignatius’s research focuses on clinical pharmacology of anti-mycobacterial regimens, for both tuberculosis and nontuberculous mycobacteria infections. This includes clinical trials of drug-drug interactions, pharmacokinetics-pharmacodynamics, and pharmacokinetics-toxicodynamics. By applying clinical trials framework and experience from the study of tuberculosis to the field of nontuberculous mycobacteria, Dr. Ignatius aims to improve the treatment of both diseases with both novel and standard of care regimens.
PubMed - Publications
https://www.ncbi.nlm.nih.gov/myncbi/1jg0fTikgP05g/bibliography/public/
Selected Publications
Ignatius EH, Abdelwahab MT, Hendricks B, Gupte N, Narunsky K, Wiesner L, Barnes G, Dawson R, Dooley KE, Denti P. Pretomanid Pharmacokinetics in the Presence of Rifamycins: Interim Results from a Randomized Trial among Patients with Tuberculosis. Antimicrob Agents Chemother. 2021 Jan 20;65(2):e01196-20. doi: 10.1128/AAC.01196-20. PMID: 33229425; PMCID: PMC7849006
Ignatius EH, Cohen KA, Bishai WR. Getting to the point in point-of-care diagnostics for tuberculosis. J Clin Invest. 2020 Nov 2;130(11):5671-5673. doi: 10.1172/JCI142497. PubMed PMID: 32986020; PubMed Central PMCID: PMC7598045.
Ignatius EH, Dooley KE. New Drugs for the Treatment of Tuberculosis. Clin Chest Med. 2019 Dec;40(4):811-827. doi: 10.1016/j.ccm.2019.08.001. Review. PubMed PMID: 31731986
Ignatius EH, Wang K, Karaba A, Robinson M, Avery RK, Blair P, Chida N, Jain T, Petty BG, Siddiqui Z, Melia MT, Auwaerter PG, Xu Y, Garibaldi BT. Tocilizumab for the Treatment of COVID-19 Among Hospitalized Patients: A Matched Retrospective Cohort Analysis. Open Forum Infect Dis. 2021 Jan;8(1):ofaa598. doi: 10.1093/ofid/ofaa598. eCollection 2021 Jan. PubMed PMID: 33537364; PubMed Central PMCID: PMC7798657.
Pietersen E, Ignatius E, Streicher EM, Mastrapa B, Padanilam X, Pooran A, Badri M, Lesosky M, van Helden P, Sirgel FA, Warren R, Dheda K. Long-term outcomes of patients with extensively drug-resistant tuberculosis in South Africa: a cohort study. Lancet. 2014 Apr 5;383(9924):1230-9. doi: 10.1016/S0140-6736(13)62675-6. Epub 2014 Jan 17. PubMed PMID: 24439237
Honors
Clinician Scientist Award, Johns Hopkins
Memberships
- American Society for Clinical Pharmacology & Therapeutics (ASCPT)
- Infectious Diseases Society of American (IDSA)
- The International Union Against Tuberculosis and Lung Disease (The Union)
Locations
- Johns Hopkins Bayview Medical Center
- 5501 Hopkins Bayview Circle, Allergy & Asthma Center, 2nd Floor, Baltimore, MD 21224
- Get Directions
- phone: 410-550-5864
- fax: 410-367-2376
Expertise
Education
- Fellowship: Johns Hopkins University School of Medicine, Clinical Pharmacology, 2021
- Fellowship: Johns Hopkins University School of Medicine, Infectious Diseases, 2020
- Residency: Emory University School of Medicine, Internal Medicine, 2016
- Medical Education: Emory University School of Medicine, MD, 2013
- Graduate School: London Foundation School, MSc, 2012
Board Certifications
- Infectious Disease: American Board of Internal Medicine, 2019
- Internal Medicine: American Board of Internal Medicine, 2016
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
- Veteran Affairs Community Care Network (Optum-VACCN)
Ratings & Reviews
5 out of 5
66 ratings, 30 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 3/20/2026
Dr Ignatius is a great provider and I feel I can get her opinion on things other doctors want to do.
- 5 out of 5 starsReviewed on 3/20/2026
Dr Ignatius is a very professional and knowledgeable doctor, She has helped me get my health back!
- 5 out of 5 starsReviewed on 2/27/2026
Dr. Ignatius is an exceptional physician. She is knowledgeable, kind, caring and listen to all your concerns. She even did research on her own time ( weekend) about a drug interaction that another provider (rheumatologist) is considering using for my care. She is the best. Very lucky to be under her care
- 5 out of 5 starsReviewed on 2/27/2026
Dr Ignatius is always very thorough, conscientious and caring. She takes the time to make sure all of my concerns are addressed during my visit and never makes me feels rushed.
- 5 out of 5 starsReviewed on 2/27/2026
Dr. Ignatius is thorough, patient, and knowledgeable. She explores every avenue as she seeks a diagnosis. She takes notes and collects data meticulously. She orders appropriate tests and diagnostic exams to help determine diagnosis. She is considerate and personable.
- 5 out of 5 starsReviewed on 2/13/2026
I feel very confident about my care and my doctor's expertise!
- 5 out of 5 starsReviewed on 2/6/2026
Very good
- 5 out of 5 starsReviewed on 1/30/2026
Dr. Ignatius is great. She listens carefully and explains things well. She always spends adequate time with me.
- 5 out of 5 starsReviewed on 1/23/2026
Dr. Ignatius is the best. She is very knowledgeable and caring physician.
- 5 out of 5 starsReviewed on 1/16/2026
Dr. Ignatius is outstanding. She is aware of my condition and the latest medical treatments for it. She clearly explains how medical treatments work and discusses her reasons for the best medical options for my situation.
- 5 out of 5 starsReviewed on 1/9/2026
Dr Ignatius is always very knowledgeable and straightforward in her approach. I appreciate your expertise.
- 5 out of 5 starsReviewed on 12/12/2025
Very professional, knowledgeable and caring. My daughter and I love Dr Ignatius.
- 5 out of 5 starsReviewed on 12/11/2025
Very thorough and professional
- 5 out of 5 starsReviewed on 12/5/2025
Dr. Ignatius is an expert in my condition and attentive to my needs. She is both professional and personable. I feel lucky to be under her excellent care.
- 5 out of 5 starsReviewed on 11/14/2025
She is outstanding. Sharp, explains, addresses questions, very knowledgeable. Cares abt my well being. Very smart and explains next steps. Writes the report as we talk...very efficient.
- 5 out of 5 starsReviewed on 10/31/2025
Dr Ignatius is a thorough ID doctor
- 5 out of 5 starsReviewed on 10/17/2025
Excellent
- 5 out of 5 starsReviewed on 10/10/2025
The team work is excellent.
- 5 out of 5 starsReviewed on 10/3/2025
She is excellent, intelligent and a good listener. She is open and caring
- 5 out of 5 starsReviewed on 9/12/2025
Dr Ignatius is an outstanding provider who carefully and compassionately listens to me. She makes me feel like I'm a member of the team! I'm bowled over by her generosity and patience. She wants me to understand my diagnosis and her treatment decisions. I saw multiple specialists elsewhere before my first appointment with Dr Ignatius. She is the one doctor who correctly diagnosed me and prescribed effective treatment, never even mentioned by previous consultants.
- 5 out of 5 starsReviewed on 9/5/2025
Dr Ignatious is thorough. She explains, listens & answer any questions with kindness & patience.
- 5 out of 5 starsReviewed on 9/5/2025
Very personable, knowledgeable, and kind
- 5 out of 5 starsReviewed on 8/15/2025
Doctor Ignatius always explains things well and listens well! I believe I am in excellent care with her in person and on My Chart when needed
- 5 out of 5 starsReviewed on 8/15/2025
Very thorough and professional
- 5 out of 5 starsReviewed on 7/18/2025
Well prepared, a true expert in her field, excellent communication skills
- 5 out of 5 starsReviewed on 7/11/2025
Dr. Ignatius is the best of the best! I am so grateful that I am under her care.
- 5 out of 5 starsReviewed on 6/13/2025
My provider was well-informed and very helpful.
- 5 out of 5 starsReviewed on 6/6/2025
Dr. Ignatius is incredibly knowledgeable entirely in her search for answers from my health concerns.
- 5 out of 5 starsReviewed on 5/23/2025
Dr. Ignatius is very thorough and knowledgeable. I have total trust in her expertise.
- 5 out of 5 starsReviewed on 5/12/2025
She is very through and is thoughtful about the next steps in my care.