oac allegy and asthma specialists

 Providing over 40 Years of Quality Allergy Care

Manoj Mohan, D.O.

Jessica Baird, DNP, FNP-BC

Lawrence Hennessey, M.D. (Retired)

Kamal Mohan, M.D. (Founder, Retired)

Provider Profiles

dr manoj mohan

Dr. Manoj Mohan

Doctor Mohan specializes in the treatment of allergy, asthma and immunology. He is Board Certified by the American Board of Allergy and Immunology and the American Board of Internal Medicine. Dr. Mohan is a native of Okemos, and a Michigan State University graduate. After graduating from MSU, Dr. Mohan attended Midwestern University in Chicago to obtain a degree in Osteopathic Medicine. After completing internships at Mt. Sinai Hospital and residency at Northwestern University in Internal Medicine, Dr. Mohan completed his Fellowship in Allergy and Immunology at the Medical College of Georgia.


Jessica Baird

Jessica Baird, DNP, FNP-BC

Jessica earned her undergraduate degree from Michigan State University in 2016. She earned her Doctorate in Nursing Practice from the University of Michigan and is a board-certified Family Nurse Practitioner who joined Okemos Allergy Center in 2023. Prior to becoming a Family Nurse Practitioner and completing her Doctorate, Jessica worked in the Pediatric Intensive Care Unit at C.S. Mott Children’s Hospital for over 6 years as a registered nurse. She is an active member of the American Association of Nurse Practitioners and Michigan Council of Nurse Practitioners. Additionally, she is a Lecturer in the School of Nursing at the University of Michigan.


Dr. Lawrence Hennessey, Retired

Doctor Hennessey earned his undergraduate degree at The University of Michigan. He is a 1986 graduate of Michigan State University College of Human Medicine. His residency training, in combined Internal Medicine and Pediatrics, also took place at M.S.U. He then went on to complete a Fellowship in Allergy and Clinical Immunology at the University of Michigan Hospitals, and joined Dr. Mohan's practice in 1993. Dr. Hennessey is certified by the American Boards of Internal Medicine, Pediatrics, and Allergy and Immunology. He is a Fellow of the American Academy of Pediatrics, the American College of Physicians, and the American Academy of Allergy, Asthma and Immunology. He is a member of the Ingham County and Michigan State Medical Societies and the Alpha Omega Alpha Medical Honor Society, and is an Assistant Clinical Professor in the College of Human Medicine at Michigan State University.



Dr. Kamal Mohan, Founder, Retired

Doctor Mohan is a 1970 graduate of the Government Medical College in Patila, India. His residency training in Pediatrics was at Michigan State University. Dr. Mohan completed his Fellowship in Pediatrics at M.S.U. in 1976 and completed his Allergy and Immunology Fellowship at Medical College of Wisconsin in 1981. He is a Fellow fo the American Academy of Allergy and Immunology. Dr. Mohan retired December, 2017.  He enjoys stopping by the office for a cup of coffee because he has nothing else to do.  


Qualified Allergy Specialists

physician profiles

Allergists are physicians who have completed at least nine years of intense study. After completing medical school, they have three years of training in internal medicine or pediatrics. Then these specialists must complete allergy and immunology training programs, called fellowships.

qualified allergy specialists

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