School of Science & Mathematics Faculty & Staff To quickly jump to a section, select one of the tags below. Dean, School of Science & Mathematics Associate Dean, School of Science & Mathematics Administrative Assistant to the Dean Agricultural & Biological Sciences Computer & Data Sciences Health Science Mathematics Physical Sciences School of Science & Mathematics Staff Members Dean, School of Science & Mathematics Dr. Stephen Hudman Interim Dean, School of Science & Mathematics; Professor of Biology shudman@truman.edu (660) 785-4248 By Appointment. Personal Pronouns: he/him Associate Dean, School of Science & Mathematics Dr. Brian Lamp Interim Associate Dean; Professor of Chemistry blamp@truman.edu (660) 785-4638 Current office hours are at Personal Pronouns: him/his Administrative Assistant to the Dean Katie Dixson Administrative Assistant to the Dean kdixson@truman.edu (660) 785-4248 Agricultural & Biological Sciences Dr. Brett Berke Associate Professor of Biology (2015) bberke@truman.edu (660) 785-4609 Fall 2026 (Zoom and F2F; ) Mon 330-430 Tues 1-230 Wed 1030-1230 Fri 330-430 Appointments can also be scheduled upon request Personal Pronouns: he/him/his Dr. Sarah Berke Assistant Professor of Biology sberke@truman.edu (660) 785-7133 Tuesday: 9:30 - 11:30 am Wednesday: 1:30-3:30 pm Friday: 10:30 am - 12:30 pm Or by appointment Personal Pronouns: she/her Ms. Emily Costello Lecturer in Agricultural Science, Equestrian Show Team Coach ecostello@truman.edu (660) 785-7204 Fall 2026 My office hours are from 10:30-12:20 pm MF, 9:30-11:20am T, 9:30-1:20pm R, or by appointment. Office Hours can be done in person in MG 3078 or over zoom at ecostello2020 Personal Pronouns: She/Her Dr. Maria Beatriz De Souza Cortez Assistant Professor of Biology (2024) mbscortez@truman.edu (660) 785-4623 Monday: 3:30pm - 5:30pm Tuesday: 9:00am - 11:00am Wednesday: 3:30pm - 5:30pm Thursday: 11:30am - 1:30pm Friday: 10:30am - 12:30pm For Office Hours by appointment, please email me at mbscortez@truman.edu Personal Pronouns: she, her, hers Dr. Rachel Harman Assistant Professor of Agroecology rharman@truman.edu (660) 785-4278 TR 8:00 - 10:00, WF 1:30 - 2:30, or by appointment Personal Pronouns: She, Her, Hers Dr. Joanna Hubbard Associate Professor of Biology jhubbard@truman.edu (660) 785-4071 Fall 2026: Tues / Thur: 1:00 pm – 3:00 pm & Fri: 10:30 am – 12:00 pm By appointment: Personal Pronouns: she, her, hers Dr. Ariel Hughes Assistant Professor of Biology ahughes@truman.edu (660) 785-4624 T&R 10:30am-11:30am, 2:00pm-3:00pm, F 10:30am-11:50am, or by appointment Personal Pronouns: She/Her Dr. Bob Johnson Associate Professor of Agricultural Science bjohnson@truman.edu (660) 785-4281 MWF: 10:30 -12:20 or by appointment Personal Pronouns: he/him/his Josh Kraft Instructor in Agricultural Science jkraft@truman.edu (660) 785-4593 Dr. John Ma Professor of Biology (2005) johnma@truman.edu (660) 785-4619 Fall 2026 Office hours: Tue/Wed 12:30 pm – 2:30 pm; Thu 12:30 pm – 1:30 pm No office hours during the final’s week. Dr. Hajeewaka Mendis Assistant Professor of Biology (2021) hmendis@truman.edu (660) 785-4630 Office hours: M 3:30 PM - 4:30 PM T 1:30 PM - 4:30 PM W 3:30 PM - 4:30 PM R 1:30 PM - 4:30 PM, 9:00 AM - 10:00 AM F 9:00 AM - 10:00 AM (MG3030) Albert Meyers Biology Laboratory Technician II ameyers@truman.edu (660) 785-4607 Instr. Jeanne Mitchell Instructor in Biology (1992) jmitchel@truman.edu (660) 785-7662 Monday 9:30 - 10:20 and 11:30 - 12:20 and 1:30 to 2:20 Tuesday 1:30 to 2:20 Wednesday 9:30 - 10:20 and 11:30 - 12:20 and 1:30 to 2:20 Friday 9:30 - 10:20 and 11:30 - 12:20 and 1:30 to 2:20 or by appointment. Zoom ID 614-047-3210 (zoom open by arrangement) Personal Pronouns: she/her Dr. Chad Montgomery Professor of Biology (2007) chadmont@truman.edu (660) 785-4587 Office Hours: M 9:30-12:20, W 11:30-2:20, T/TH 10:30-1:20 And by appointment Wilkister Nakami Nabulindo nwilkister@truman.edu Liz O'Saurus Biology Lab Technician losaurus@truman.edu (660) 785-7110 Dr. Joyce Patrick Associate Professor of Biology (2015) jpatrick@truman.edu (660) 785-4601 My Office Hours for Spring 2026 are: Mondays 1:30-3:20 PM Tuesdays 9:30-10:20 AM and 12:30-1:20 PM Thursdays 9:30-10:20 AM Fridays 10:30 AM-12:20 PM Other hours available by appointment. Personal Pronouns: She/Her Dr. Drew Sieg Agricultural & Biological Sciences Chair and Associate Professor of Biology rsieg@truman.edu (660) 785-4605 Open Office Hours Via or in person (MG 3054) Tuesday / Friday 9-11am Other times by app't, send me an email! Mary Turner Instructor in Biology mturner@truman.edu (660) 785-4597 Dr. Anton Weisstein Professor of Biology (2004) weisstae@truman.edu (660) 785-4615 For Fall 2026: Tue: 10:00 a.m. – 11:30 a.m. Wed: 1:30 p.m. – 2:30 p.m. Thu: 11:30 a.m. – 1:30 p.m. ...or by appointment. Appointments recommended, but drop-ins welcome. Personal Pronouns: he/him/his Justin Wiles University Farm Manager jwiles@truman.edu (660) 785-7477 Mandi Wiser Administrative Assistant awiser@truman.edu (660) 785-4597 Personal Pronouns: She/Her Computer & Data Sciences Dr. Scott Alberts Computer & Data Sciences Chair and Professor of Statistics salberts@truman.edu (660) 785-7649 Fall 2026 MWF 9:00-10:20 AM Monday: 2:30-4:20 PM TTh 1:30-2:50 PM I'm also available by appointment, and I can turn on Zoom during any office hours if I know you're coming. Zoom link: E-mail me if Zoom isn't turned on at salberts@truman.edu Personal Pronouns: he/his Dr. Tetyana Beregovska Assistant Professor of Statistics and Data Science tberegovska@truman.edu (660) 785-5681 Monday 1:30 - 6:00 PM Tuesday 1:30 - 3:00 PM Wednesday 10:25-11:25 AM Thursday 11:00 AM – 12:00 PM, 1:30 – 2:30 PM Friday 10:25-11:25 AM or by appointment in VH 2170 or on Zoom Zoom: 374-869-1286 (Personal Meeting ID) Personal Pronouns: she/her Dr. Sunghoon Chung Assistant Professor of Statistics schung@truman.edu (660) 785-4682 Fall 2026 (Aug 17 - Dec 4) Monday: 9:20-11:00 AM, 1:30-2:25 PM and 3:20-5:00 PM Tuesday: 10:20-11:00 AM and 1:30-3:10 PM Wednesday: 9:20-11:00 AM and 1:30-2:25 PM Thursday: 10:20-11:00 AM Or by appointment Personal Pronouns: he/him/his Dr. Dean DeCock Professor of Statistics & Director of Assessment decock@truman.edu (660) 785-7367 M 10:00-10:50, 1:00-2:20 T 8:30-9:00 (MC), 10:30-11:20 W 9:30-10:50 R 8:30-9:00 (MC), 10:30-11:20 Or by appointment Dr. Mohamed Elsaeiti Assistant Professor of Statistics and Data Science melsaeiti@truman.edu - Tuesday: 4:30 PM-7:30 PM - Friday: 8:00 AM-11:00 AM - Friday: 1:30 PM – 5:30 PM Additional meetings outside these times may be arranged upon request and availability Personal Pronouns: He/him/his Dr. Mina Mahbub Hossain Assistant Professor of Statistics and Data Science mhossain@truman.edu (660) 785-4299 Dr. Wayne Johnson Assistant Professor of Mathematics and Data Science wjohnson@truman.edu (660) 785-4297 Fall 2026 Office Hours Monday: 8:30am-9:20am and 10:30am-12:20pm Tuesday: 9:30am-10:20am and 1:30pm-2:50pm Wednesday: 10:30am-12:20pm Thursday: 9:30am-10:20am and 1:30pm-2:50pm Personal Pronouns: he/him Dr. Hyun-Joo Kim Professor of Statistics; Department Chair of Health Sciences hjkim@truman.edu (660) 785-4693 M 9:00-12:00 TR 11:00-12:00 and 1:30-3:00 other times by appointment Personal zoom link Personal Pronouns: she/hers Dr. Kafi Rahman Associate Professor of Computer Science kafi@truman.edu (660) 785-4553 For additional office hours, please email and make an appointment In person office hours: TThu: 2:30pm - 3:20pm MW: 8:00am – 9:20am and 11:30am – 12:20pm Online only office hours via Zoom: TF: 8:00am – 9:20am Dr. Gayathri Sadanala Assistant Professor of Computer Science gsadanala@truman.edu (660) 785-4658 MW: 9:30 AM - 10:30 AM, 11:30 AM -12:30 PM, 2:30 PM-3:30 PM F: Virntual Hours, by appointment only. Diane Sandefur Administrative Assistant - Computer & Data Sciences and Mathematics sandefur@truman.edu (660) 785-4547 Monday - Friday 7:00AM to 4:00PM Office is open 8:00AM to 5:00PM (You are welcome to come in at 7:00AM as well. But official hours start at 8:00AM.) Dr. Nazmul Shahadat Assistant Professor of Computer Science nshahadat@truman.edu (660) 785-7234 My Office Hours (Fall 2026): MW: 10:30 AM - 11:30 AM & 2:30 PM - 3:00 PM Tuesday: 1:00 PM - 1:30 PM & 2:30 PM - 3:00 PM Wednesday: 3:00 PM - 5:00 PM (Online) Thursday: 11:30 AM - 1:30 PM (By Appointment) Friday: 10:30 AM - 11:30 AM & 12:30 PM - 1:30 PM Dr. Carol Thatcher Professor of Statistics clthatch@truman.edu (660) 785-7236 Office Hours for Fall 2026 MF 8:30-10:50 am W 10:00-10:50 am, 2:00-3:00 pm TuTh 10:30-noon Zoom only: Thurs. 6:30-7:30 pm (preference to PDAT 622 students) Personal Pronouns: she/her Dr. Scott Thatcher Professor of Statistics thatcher@truman.edu (660) 785-4552 Fall 2026 General Office Hours (in person and via Zoom): M 1:30--3:30; T 10:00--11:30; W 9:00--10:00, 1:30--2:30; Th 10:00--11:30, F 1:30--3:30, and by appointment. Note: If you join the Zoom meeting, please make sure your full name is used as your Zoom name, and be patient if it takes me a minute to let you in. I may be juggling in-person and Zoom students or having a private conversation with a student. Dr. Fujian Yan Assistant Professor of Computer Science fyan@truman.edu (660) 785-7233 Dr. Chen-Yeou Yu Assistant Professor of Computer Science cyyu@truman.edu (660) 785-4029 Fall 2026 Office Hours: Mon. to Fri. (By Appointment or walk-in) MWF: 11:00AM – 12:00PM; 13:00PM – 14:00PM; 16:00PM – 17:00PM TR: 14:00PM – 17:00PM Or you can email me your best avaialble time. Zoom meeting link: https://truman-edu.zoom.us/j/8547872384 The meeting ID: 854 787 238 Health Science Denice Blaine Administrative Assistant deniceb@truman.edu (660) 785-4460 Fall 2026 Hours of Availability: Denice will be available Monday -Friday: 8:00-12:00 p.m. in Pershing 2114 Lunch Break: 12:00-1:00 p.m. Monday -Thursday Denice will be available Monday -Thursday: 1:00-4:00 in Magruder 3072 Dr. Carolyn Cox Professor of Health Science ccox@truman.edu (660) 785-7256 Fall 2026 Office Hours: M-F=9:30-10:30 a.m. & 3:30-4:30 p.m. Dr. Hyun-Joo Kim Professor of Statistics; Department Chair of Health Sciences hjkim@truman.edu (660) 785-4693 M 9:00-12:00 TR 11:00-12:00 and 1:30-3:00 other times by appointment Personal zoom link Personal Pronouns: she/hers Dr. Nancy Daley Moore Associate Professor of Health Science ndmoore@truman.edu (660) 785-4455 Fall 2026: Mondays: 1:30 - 5:00 pm (changing October 19th to 8:30 - 10:00 am & 12:30 - 1:30 pm) Tuesdays: 8:30 - 10:30 am (adding an extra hour from 3:00 - 4:00 pm starting October 20th) Wednesdays: 9:00 - 11:30 am Thursdays: 3:00 - 5:00 pm (online only) For office hours, you can drop by my office or sign up for an appointment on . Personal Pronouns: She/Her/Hers Dr. Rolena Stephenson Associate Professor of Health Science rstephenson@truman.edu (660) 785-4309 Fall 2026: Mondays: 8:00 - 10:00 am, 1:30 - 3:30 pm Wednesdays: 8:00 - 10:00 am, 2:00 - 4:00 pm Tuesdays & Thursdays (by appointment only): 12:30 - 1:30 pm Mathematics Dr. David Garth Mathematics Department Chair; Professor of Mathematics dgarth@truman.edu (660) 785-4044 Office Hours (In person or via Zoom) MWR 1:30-3:30 TF 9:30-11:30 Zoom: You can log in using the link Dr. Ian Gossett Assistant Professor of Mathematics igossett@truman.edu (660) 785-4592 Fall 2026 office hours: Mon/Tue/Wed 2:30-5:30 pm & Fri 2:30-3:30 pm Dr. Anna Halfpap Assistant Professor of Mathematics ahalfpap@truman.edu (660) 785-4029 Fall 2026 Office Hours Monday: 10:30-11:20 Tuesday: 10:30-11:20 and 1:30-3:20 Wednesday: 10:30-11:20 Thursday: 10:30-11:20 and 1:30-3:20 Friday: 9:00-10:00 and 11:00-12:00 Dr. Wayne Johnson Assistant Professor of Mathematics and Data Science wjohnson@truman.edu (660) 785-4297 Fall 2026 Office Hours Monday: 8:30am-9:20am and 10:30am-12:20pm Tuesday: 9:30am-10:20am and 1:30pm-2:50pm Wednesday: 10:30am-12:20pm Thursday: 9:30am-10:20am and 1:30pm-2:50pm Personal Pronouns: he/him Dr. Stephen Lacina Assistant Professor of Mathematics slacina@truman.edu (660) 785-4554 Monday 2:30-4:30pm Wednesday 9:30-11:20am and 2:30-4:30pm Thursday 12:30-1:20pm and 3-5pm Friday 9:30-10:20am Diane Sandefur Administrative Assistant - Computer & Data Sciences and Mathematics sandefur@truman.edu (660) 785-4547 Monday - Friday 7:00AM to 4:00PM Office is open 8:00AM to 5:00PM (You are welcome to come in at 7:00AM as well. But official hours start at 8:00AM.) Dr. Derek Sparrius Assistant Professor of Mathematics dsparrius@truman.edu (660) 785-7829 Monday: 9:00-10:30 AM Tuesday: 9:30 AM - 12:00 PM, 3:30-4:30 PM Wednesday: 9:30-10:30 AM Thursday: 10:30 AM - 12:00 PM, 3:30-4:30 PM Friday: 9:00-10:30 AM Dr. Dana Vazzana Professor of Mathematics and Director of Academic Professional Development dvazzana@truman.edu (660) 785-4547 Office Hours Spring 2026 VH 2144 Monday: 2:30-3:20 Tuesday: 12:30-1:20, 2:30-3:20 Friday: 11:30-2:30 Personal Pronouns: she/her/hers Dr. Tony Vazzana Professor of Mathematics tvazzana@truman.edu (660) 785-4547 Personal Pronouns: He / Him / His Mrs. Vanessa Williams Instructor of Mathematics vwilliams@truman.edu (660) 785-4090 Campus Office Hours MWF: 12:15pm - 1:15pm TR: 12:00pm - 2:30pm Zoom Office Hours Wednesday and Thursday: Meeting ID: 820 7168 0058 Passcode: 917088 Physical Sciences Dr. Debashis Basu Assistant Professor of Chemistry dbasu@truman.edu (660) 785-4634 Office Hours (Fall 2026): Mon, Tue, Wed: 3:00 PM – 5:00 PM (MG 3112) Tue: 1:30 – 3:00 PM (CCC – MG3090) Personal Pronouns: he/him/his Ian Clark Assistant Professor of Physics iclark@truman.edu (660) 785-4316 General Office Hours: MWF 1:30 PM - 2:30 PM; R 10:30 AM - 11:30 AM Dedicated PHYS 132 Office Hour: M 2:30 PM - 3:30 PM Dedicated PHYS 185 Office Hour: W 2:30 PM - 3:30 PM You can also stop by any time my office door is open. Other times can also be arranged by appointment. Dr. Colin DeGraf Assistant Professor of Physics cdegraf@truman.edu (660) 785-4070 Fall 2026 (subject to change): Mon: 10:30-11:20, 1:30-2:20 Wed: 10:30-11:20, 1:30-2:20 Thur: 1:30-3:20 Fri: 10:30-11:20, 1:30-2:20 Personal Pronouns: He/Him Dr. Taner Edis Professor of Physics edis@truman.edu (660) 785-4583 . Heather Ervin Chemistry Technician and Laboratory Coordinator hervin@truman.edu (660) 785-7254 Dr. Vayujeet Gokhale Professor of Physics gokhale@truman.edu (660) 785-4594 Personal Pronouns: He/Him/His Dr. John Grutsch Assistant Professor of Chemistry jgrutsch@truman.edu (660) 785-4524 Dr. Hanbo Hong Assistant Professor of Chemistry hhong@truman.edu (660) 785-4625 Fall 2026: Mon: 3 ~ 4:30 PM, MG 3090 (Chemistry Contact Center, "C3"). Tue, Wed, Thu, Fri: 3 ~ 5 PM, MG 3144 Open to PChem students only: Mon, 5 ~ 6:30 PM, MG 1090 Personal Pronouns: he/him/his Dr. Tim Humphry Associate Professor of Chemistry humphry@truman.edu (660) 785-4606 For FA26, my office hours are MWF 9:30-10:30 and 11:30-12:30, and thursday 12:30-1:30. For students in my classes, my office hours are effectively 24h a day via GroupMe. If you want to meet on a different time or day, send me an email or a GroupMe and we will set it up. Dr. Rasanjali Jayathissa Assistant Professor of Physics rjaya@truman.edu (660) 785-4613 M 11.30 -12.30 and 3.30 - 5.00 W 11.30 -12.30 and 3.30 - 5.00 R 3.30 - 5.00 F 12.30 -1.30 and 3.30-5.00 Personal Pronouns: She/ her Dr. Andrew Kauffmann Assistant Professor of Chemistry akauffmann@truman.edu (660) 785-7736 MWF: 9:00 AM - 10:00 AM T: 9:00 AM - 12:00 PM WF: 3:30 PM - 4:30 PM Dr. Barbara Kramer Professor of Chemistry bkramer@truman.edu (660) 785-7608 Current office hours are at Personal Pronouns: She/her Dr. Brian Lamp Interim Associate Dean; Professor of Chemistry blamp@truman.edu (660) 785-4638 Current office hours are at Personal Pronouns: him/his Dr. James McCormick Associate Professor of Chemistry jmccormi@truman.edu (660) 785-4315 Monday, Wednesday, Friday: 9:00 AM - 12:00 PM. Wednesday: 3:00 PM - 4:30 PM Chemsistry Contact Center MG 3090. Any other time when I am not in class or otherwise scheduled is available to meet with students. Email or call me to set up a time. All office hours are in person, but can also be via Zoom at . Please let me know if you would like to attend via Zoom, so that I can get things set up. Dr. Peter Ramberg Professor of History of Science ramberg@truman.edu (660) 785-4620 M: 9:30-11:00 (Chemistry Contact Center hours in MG 3090, but available for anything) T: 1:00-2:30 Th: 1:00-2:30 F: 9:30-11:00 Or by appointment. or in-person. Dr. Jay Sibbitts Assistant Professor of Chemistry jsibbitts@truman.edu (660) 785-4604 Dr. Urvashi Urvashi Assistant Professor of Chemistry urvashi@truman.edu (660) 785-4591 Office (MG 3140): We want to support your success! Don’t hesitate to reach out with any questions or concerns. M: 9:30-10:30 AM, 3:00-5:00 PM; F: 1:30-2:30 PM; W: 9:30-10:30 AM, 3:00-4:00 PM; W (C^3): 1:30-3:00 PM Appointments are also available! Zoom sessions are encouraged Personal Pronouns: She/Hers/herself Nathaniel Webber Chemistry Technician nwebber@truman.edu (660) 785-4411 Personal Pronouns: he/him/his Dr. Tim Wiser Interim Chair of Physical Sciences; Associate Professor of Physics tdwiser@truman.edu (660) 785-4603 (Fall 2026) Open Office Hours: MTW 9:30a–10:20a MW 1:30p–3:20p RF by appointment For 1-on-1 office hours or advising: Personal Pronouns: he/him Stacey Xander Administrative Assistant - Physical Sciences sxander@truman.edu (660) 785-7599 8:00am - 5:00pm (closed for lunch) School of Science & Mathematics Staff Members Juan Coronado Materials Manager jcoronado@truman.edu (660) 785-4631 Amanda Montgomery Gaber Garden Caretaker amontgomery@truman.edu School of Science and Mathematics