School of Science & Mathematics
Dr. Stephen Hudman
Interim Dean, School of Science & Mathematics; Professor of Biology
By Appointment.
Dr. Brian Lamp
Interim Associate Dean; Professor of Chemistry
Current semester schedule is at http://blamp.sites.truman.edu/current-schedule/
Agricultural & Biological Sci
Dr. Brett Berke
Associate Professor of Biology (2015)
Spring 2026 (Zoom and F2F; https://truman-edu.zoom.us/j/3226642392)
Mon 230-420
Wed 1030-1120
Thurs 1030-1
Fri 230-330
Appointments can also be scheduled upon request
Dr. Sarah Berke
Assistant Professor of Biology
Monday 11:30 am - 12:20 pm
Wednesday: 11:30 am - 12:30 pm and 2:30-2:30 pm
Friday 11:30 am - 12:30 pm and 1:30 - 3:30 pm
Or by appointment
Ms. Emily Costello
Lecturer in Agricultural Science, Equestrian Show Team Coach
Spring 2026
9:30am-12:00 pm M-R and10am-12pm F in MG 3078, other times by appointment, office hours can be in person or over zoom (ecostello2020)
Dr. Maria Beatriz De Souza Cortez
Assistant Professor of Biology (2024)
Monday: 8:30am - 10:00am
Tuesday: 9:00am - 11:00am and 4:30pm - 5:30pm
Wednesday: 1:30pm - 3:00pm
Thursday: 11:30am - 1:30pm
Friday: 8:30am - 10:30am
For Office Hours by appointment, please email me at mbscortez@truman.edu
Dr. Laura Fielden-Rechav
Professor of Biology (1999)
Spring 2026 M,W,H,F 10.30 to 12.30 or by appointment.
Dr. Joanna Hubbard
Associate Professor of Biology
Fall 2025 & Spring 2026: I am on sabbatical this year. If you need to contact me, please reach out via email.
Dr. Bob Johnson
Assistant Professor of Agricultural Science
MWF: 10:30 -12:20 and 1:30 - 2:20
Thursday: By appointment
Dr. John Ma
Professor of Biology (2005)
Fall 2025 Office hours:
Tue/Wed 12:30 pm – 2:30 pm; Thu 12:30 pm – 1:30 pm
Dr. Stephanie Maiden
Associate Professor
Spring 2026
WRF 9-11am
(some Thursdays I have a meeting 9:30-10:20 am)
Dr. Hajeewaka Mendis
Assistant Professor of Biology (2021)
Office hours:
M - 2:30-3:30PM (By appointment only)
T - 11:30AM-12:00PM
W - 9:30AM-12:30PM, 1:30-3:00PM;
R - 10:30AM-12:00PM,
F - 9:30-11:00AM, 1:30-2:30PM
(MG3030)
Instr. Jeanne Mitchell
Instructor in Biology (1992)
Monday 11:30 - 12:20 and 1:30 to 2:20
Tuesday 9:00 - 11:00
Wednesday 8:30 - 10:20, 11:30 - 12:20, 1:30 - 2:20
Friday 11:30 - 12:20, 1:30 - 2:20
or by appointment.
Zoom ID 614-047-3210 (zoom open by arrangement)
Dr. Chad Montgomery
Professor of Biology (2007)
M 8:30-11:30, 1:30-4:30; W 11:30-1:30; T Th 12:00-1:00
And by appointment
Dr. Joyce Patrick
Associate Professor of Biology (2015)
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.
Dr. Michael Seipel
Professor of Agricultural Science
Spring 2026:
M W F 10:30 – 11:30; 1:30-2:30
T & Th 10:00-12:00
I would recommend setting office hour appointments in advance by email. I am available to meet in person in MG 3082 or via Zoom. Please email me for Zoom link.
Please schedule academic advising appointments via this link:
Michael Seipel Advising Appointments
Dr. Drew Sieg
Agricultural & Biological Sciences Chair and Associate Professor of Biology
Open Office Hours Via Zoom or in person (MG 3054)
MWF 1:30-3, R 1-3
Other times by app't, send me an email!
Dr. Anton Weisstein
Professor of Biology (2004)
For Spring 2026:
Tue: 10:30 a.m. – 12:30 p.m.
Wed: 2:30 p.m. – 3:30 p.m.
Thu: 10:30 a.m. – 12:30 p.m.
Fri: 2:30 p.m. – 3:30 p.m.
Appointments recommended, but drop-ins welcome.
Agricultural & Biological Scie
Computer & Data Sciences
Dr. Scott Alberts
Computer & Data Sciences Chair and Professor of Statistics
Spring 2026
MWF 10:00-11:20 AM
TWTh 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: https://zoom.us/j/708734757
E-mail me if Zoom isn't turned on at salberts@truman.edu
Dr. Tetyana Beregovska
Assistant Professor of Statistics and Data Science
Monday: 11:25 AM-12:25 PM & 1:30-3:30 PM (in VH 2170)
Tuesday 12:00-3:00 PM (in VH 2170) and 6:00-7:00PM (on Zoom only, until Spring Break)
Wednesday 11:25 AM-12:25 PM & 1:30-3:30 PM (in VH 2170)
Thursday 11:15-11:45 AM (on Zoom only)
or by appointment in VH 2170 or on Zoom
Zoom: 374-869-1286 (Personal Meeting ID)
Dr. Sunghoon Chung
Assistant Professor of Statistics
Spring 2026 (Jan 12 - May 1)
Tue: 11:50 AM – 1:30 PM, 2:45 – 3:15 PM, 4:45 – 5:15 PM
Wed: 11:30 AM – 12:25 PM, 1:30 – 2:25 PM, 3:20 – 5:15 PM
Thu: 11:50 AM – 1:30 PM, 2:50 – 5:15 PM
Or by appointment — email: schung@
Dr. Dean DeCock
Professor of Statistics & Director of Assessment
I will be on sabbatical for spring 2026. You may contact me via email (I will be checking email occasionally) but if you need timely information please contact Dr. Scott Alberts the CDSC Chair. (or Jonathan Vieker for assessment inquires)
Dr. Mohamed Elsaeiti
Assistant Professor of Statistics and Data Science
- 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
Dr. Hyun-Joo Kim
Professor of Statistics; Department chair, Health Sciences; Program Director, Data Science
AT VH 2248 on MW 8:30 AM - 11:00 AM, R 11:00 AM - 12:00 PM
AT MG 3076 other times by appointment
Personal zoom link https://zoom.us/j/4193527593
Dr. Shanshan Lv
Assistant Professor of Statistics
2024 Fall Office Hours
M, W: 12:00pm - 3:00pm;
T, Th: 12:30pm - 3:00pm
or by appointment
Dr. Kafi Rahman
Associate Professor of Computer Science
In person office hours:
MW: 1:30pm–3:20pm
Tuesday: 8:00am–10:50am, 11am–11:50am (zoom), 1:30pm–2:20pm
Friday: 12:30pm–1:20pm (zoom)
Dr. Gayathri Sadanala
Assistant Professor of Computer Science
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.
Dr. Nazmul Shahadat
Assistant Professor of Computer Science
My Office Hours (Spring 2025):
Monday: 1:30 PM - 4:30 PM (In-person: Effective from 3/2/2026)
Tuesday: 1:00 PM - 3:00 PM (Online)
Wednesday: 2:30 PM - 4:30 PM (Online)
Dr. Carol Thatcher
Professor of Statistics
Office Hours for Spring 2026
MWF 8:30-10:30 am
TuTh 8:30-10:00 am
Zoom only: Mon 3:30-4:20 pm (preference to STAT 535 students)
Dr. Scott Thatcher
Professor of Statistics
Spring 2026 General Office Hours (in person and via Zoom):
MWF 11:30 a.m.-12:20 p.m., MWF 1:30-2:20 p.m., T 10:30-11:50 a.m., Th 1:00-2:20 p.m., and by appointment.
(Meeting ID: 998 5317 5322, PW: 952751)
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. Chen-Yeou Yu
Assistant Professor of Computer Science
Spring 2026 Office Hours:
Mon. to Fri. (By Appointment or walk-in)
MWF: 10:30am – 12:00pm; 13:30PM – 17:00PM
TR: 13:30pm – 17:20pm
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
Dr. Carolyn Cox
Professor of Health Science
Spring 2026 Office Hours:
M-F=9:30-10:30 a.m. & 3:30-4:30 p.m.
Dr. Roberta Donahue
Professor of Health Science
Spring 2026
Tuesday- 3:30-5:00 p.m.
Wednesday- 9:30 a.m. - noon
Thursday: 3:30-4:30 p.m.
Additional hours available by appointment
Dr. Nancy Daley Moore
Associate Professor of Health Science
Spring 2026:
Mondays: 8:30 - 9:30 am, 12:30 - 3:30 pm
Tuesdays: 2:00 - 5:00 pm
Thursdays: 2:00 - 5:00 pm (online only)
For office hours, you can drop by my office or sign up for an appointment on Calendly.
Dr. Rolena Stephenson
Associate Professor of Health Science
Spring 2026:
Mondays: 8:00 - 9:20 am, 10:30 am - 12:00 pm, 1:00 - 2:30 pm
Wednesdays: 8:00 - 9:20 am, 10:30 am - 11:45 am
Tuesdays & Thursdays (by appointment only): 1:00 - 2:30 pm
Mathematics
Dr. Don Bindner
Assistant Professor of Mathematics
Contrary to rumor, my office is actually VH2258 and not VH2252....
Office Hours Spring 2026:
MTWR 9:30am-10:20am at VH2258
MW 1:30pm-2:50pm at VH2258
TR: 11:30am-12:50pm at VH2258
Or by appointment
Zoom link: https://www.zoom.us/meeting/87879004083
(Let me know ahead of time if you want a Zoom meeting.)
Dr. David Garth
Mathematics Department Chair; Professor of Mathematics
Office Hours (In person or via Zoom)
Monday: 10:30-11:20
Tuesday: 1:30-3:20
Wednesday: 10:30-11:20 and 1:30-3:20
Thursday: 1:30-3:20
Friday: 10:30-11:20
Zoom: You can log in using the link
Dr. Ian Gossett
Assistant Professor of Mathematics
Office hours:
M/T/W/F 3:30-5:00 pm
T/R 7:00 -9:00 am
Dr. Anna Halfpap
Assistant Professor of Mathematics
Spring 2026 Office Hours
Monday: 9:30-10:20 and 3:30-4:20
Tuesday: 9:30-10:20 and 2:30-4:20
Wednesday: 9:30-10:20 and 2:30-4:20
Friday: 10:30-12:20
Dr. Wayne Johnson
Assistant Professor of Mathematics and Data Science
Spring 2026 Office Hours
Monday: 9:30am-11:20am
Tuesday: 8:30am-9:20am and 1:30pm-2:20pm
Wednesday: 9:30am-11:20pm and 1:30pm-2:20pm
Thursday: 8:30am-11:20am
Dr. Stephen Lacina
Assistant Professor of Mathematics
Monday 1:30-2:20pm
Tuesday 10:30am-12pm and 1:30-2:20pm
Wednesday 11:30am-12:20pm and 1:30-2:20pm and 3:30-5:30pm
Thursday 12:30-2pm
Friday 11:30am-12:20pm
Diane Sandefur
Administrative Assistant - Computer & Data Sciences and Mathematics
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. Steven Smith
Professor of Mathematics
M T W & H 9:30 AM -10:30 AM, M T & H, 11:30 AM - 12:30 PM, M, W 12:30 PM -1:30 PM or by appt
Dr. Derek Sparrius
Assistant Professor of Mathematics
Monday: 11:30-12:20 PM, 2:30-3:00 PM
Tuesday: 9:30-10:20 AM, 2:30-3:00 PM
Wednesday: 11:30-12:20 PM, 2:30-3:00 PM
Thursday: 9:30-10:20 AM, 12:30-1:20 PM, 2:30-3:00 PM
Friday: 11:30-12:20 PM, 2:30-3:00 PM
Dr. Dana Vazzana
Professor of Mathematics and Director of Academic Professional Development
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
Dr. Tony Vazzana
Professor of Mathematics
Mrs. Vanessa Williams
Instructor of Mathematics
On campus office hours:
Monday, Wednesday, Friday: 12:15pm - 2:30pm
Tuesday, Thursday: 1:30pm - 2:30pm
Zoom Office Hours
Wednesday: 4:00pm - 5:15pm
Meeting ID: 882 1071 6744
Passcode: 568909
Physical Sciences
Dr. Colin DeGraf
Assistant Professor of Physics
Spring 2026 Office Hours:
Monday: 11:30-12:20, 4:30-5:20
Tuesday: 11:30-12:20
Wednesday: 11:30-12:20
Thursday: 2:00-3:50
Friday: 11:30-12:20
In addition, please feel free to stop in anytime I'm around!
Dr. Hanbo Hong
Assistant Professor of Chemistry
Spring 2026:
Mon: 3 ~ 5 PM, MG 3090 (Chemistry Contact Center, "C3").
Tue: 9:30 ~ 11:30 AM, MG 3144
Wed, Thu, Fri: 3 ~ 5 PM, MG 3144
Dr. Tim Humphry
Associate Professor of Chemistry
For FA23, my office hours are MWF 10:30-11:30. For students in my classes, my office hours are effectively 24h a day via GroupMe. As always, 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
M 10.30 -12.30 and 2.30 - 3.30
T 11.30 – 12.30
W 10.30 -12.30 and 2.30 - 3.30
R 11.30 - 12.30
F 10.30 -11.30
and as arranged by an appointment
Dr. Barbara Kramer
Professor of Chemistry
Current office hours are at http://bkramer.sites.truman.edu/schedule/
Dr. Brian Lamp
Interim Associate Dean; Professor of Chemistry
Current semester schedule is at http://blamp.sites.truman.edu/current-schedule/
Dr. James McCormick
Associate Professor of Chemistry
Monday: 1:30 PM - 5:00 PM.
Wednesday: 1:30 PM - 5:00 PM Physical Chemistry Study Hall in Contact Center MG 3090.
Thursday: 2:30 PM - 5:00 PM.
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 https://truman-edu.zoom.us/j/3051031380. Please let me know if you would like to attend via Zoom, so that I can get things set up.
Dr. Anne Moody
Professor of Chemistry
SPRING 2026:
Monday in MG 3140: 3:30 to 5 pm
Tuesday in MG 1000: 10:30 am to 12:30 ("study hall")
Thursday in C3 (MG 3090): 11:00 to 12:30 pm
Friday in MG 3140: 9:30 am
AND by appointment!
ZOOM also available via https://zoom.us/j/6642628009. BE SURE TO SCHEDULE ZOOM W ME, so I know to open the zoom room!
Dr. Peter Ramberg
Professor of History of Science
MTWF: 10:30-12:00 (Monday in the Chemistry Contact Center, 11:00-12:20)
Or by appointment. Zoom or in-person.
Dr. Tim Wiser
Interim Chair of Physical Sciences; Associate Professor of Physics
(Spring 2026)
Open Office Hours:
MW 2:30p–3:20p
T 3p-4:20p
For 1-on-1 office hours or advising:
Book time with Dr. Wiser
