About Us
Allergy, Asthma, and Immunology was formed in 1975 in Lincoln, Nebraska by Dr. Fred Kiechel and subsequently Dr. Melvin Hoffman. Their dedication to excellence in patient care led to the expansion of clinics across Nebraska and Iowa.
Our team of board-certified allergists specializes in the diagnosis and treatment of allergies, asthma, and immune deficiencies in both children and adults of all ages.
Dr. James L. Friedlander
PRIMARY OFFICE
Westgate Professional Center
2808 South 80th Avenue, Suite 210
Omaha, NE 68124
Phone: (402) 391-1800
Fax: (402) 391-1563

Dr. James M. Tracy
PRIMARY OFFICE
Westgate Professional Center
2808 South 80th Avenue, Suite 210
Omaha, NE 68124
Phone: (402) 391-1800
Fax: (402) 391-1563

Dr. Petra Razdan
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Dr. Robert Szalewski
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Dr. Hannah Neuhaus
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Dr. Kirk A. Kinberg
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Dr. Roger H. Kobayashi,
emeritus
Dr. Kobayashi retired from clinical practice effective December 31st, 2021.

Dr. Suzan Pae
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Dr. Michael J. Sullivan, III
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Dr. Mitchell M. Pitlick
PRIMARY OFFICE
Westgate Professional Centre
2808 S 80th Ave, Suite 200
Omaha, NE 68124
Phone: (402) 391-1800
Fax: (402) 391-1563

Lindsay Groff MPAS, PA-C
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Angela Moser, MPAS, PA-C
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657

Amy Jo Wallingford, APRN
DNP, FNP-C, AE-C
PRIMARY OFFICE
Westgate Professional Centre
2808 South 80th Avenue, Suite 210
Omaha, NE 68124
Phone: (402) 391-1800
Fax: (402) 391-1563
Ashley Johnson, PA-C
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657
Read more about Ashley Johnson

Dara Schroeder, PA-C
PRIMARY OFFICE
Gateway Professional Building
600 N. Cotner Blvd., Suite 208
Lincoln, NE 68505
Phone: (402) 464-5969
Fax: (402) 464-3657
Read more about Dara Schroeder

Sarah E. Peters, PA-C
PRIMARY OFFICE
Westgate Professional Centre
2808 S 80th Ave, Suite 200
Omaha, NE 68124
Phone: (402) 391-1800
Fax: (402) 391-1563
