Meet Our Team
Andrew Hemmerich

Andrew Hemmerich | Founder & President

Andrew, aka “The Hammer,” holds a BA in Economics from Stanford where he played soccer for the Cardinal (it’s a color, not a bird). Not long after getting released by the San Jose Earthquakes of the MLS, Andrew started Hammer Prep with his 1986 VW Jetta and one client. In just over 12 years, Hammer […]

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Erin Effmann

Erin Effmann Robison | Program Manager

Erin spends countless hours at Hammer Prep helping students and parents navigate through the college admissions and preparation process. She’s strongly invested in the success of every student that comes through our doors, and does a pretty amazing job of keeping up with each student’s progress. She graduated from the University of Iowa with a […]

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Allison Perez

Allison graduated from Wellesley College, where she earned a BA in Chemistry and a minor in Biology. While in college she received a grant from the National Science Foundation to present her undergraduate research at the annual National American Chemical Society Meeting. Allison is a California Governor’s Scholar and was also invited membership into Sigma […]

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Dan Elconin

Dan holds a BA in Communications from UCLA. He published his first novel at 17 years old and is currently working on a novel for a major publisher which we can’t mention. When he’s not tutoring or writing, he’s probably watching F.C. Barcelona.

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David Linderman

David Linderman

David graduated from UC San Diego with a BS in Biology and Psychology. Entering college, he was awarded the Regents Scholarship, the most prestigious scholarship awarded to University of California undergraduate students. In high school, he scored a perfect 5 on seven AP exams. Raised in a bilingual home of English and German, David also […]

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Jamie Kunkle

Jamie holds a BS in Engineering from Harvey Mudd and MS in Nuclear Engineering from Penn State. She has been tutoring since 1999 in all disciplines from math (through Calculus) and all of the sciences to English. She has taught English in China and math at Penn State. In her free time, Jamie likes to make […]

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Janice Pappas

Janice graduated cum laude from Georgetown University with a BS in Finance and Marketing. She worked on Wall Street for several years before moving to San Diego. In addition to being a tutor, Janice is a yoga instructor and a professional artist specializing in acrylic paintings, portraits, and murals. You can check out her paintings […]

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Jessica Vanderhoff

Jessica graduated cum laude from Boston University with a degree in Psychology and has completed premedical coursework. She worked at Johns Hopkins University for five years, focusing on pharmacological and substance-abuse treatment protocols. Since then, she has tutored K-12 students in reading and math, and taught a variety of subjects. Jessica enjoys adapting her tutoring […]

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Joe Wong

Joe holds a BA in Human Development from UC San Diego. Since graduating, Joe has worked as an SAT instructor, substitute teacher, and private English and math tutor. Currently, he is attending University of Saint Augustine in San Marcos to pursue a Doctor of Physical Therapy degree. As a Bay Area native, Joe loves to cheer for the Golden State […]

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Justin Papreck

Justin graduated cum laude with a BS in Physics and Biology from Illinois Wesleyan University and an MS in Biomedical Engineering from Emory University and Georgia Tech. He has been tutoring physics, math, and biological sciences since 2001. Justin has additionally studied/worked as a scientist at UC San Diego, University of Queensland (Brisbane), Washington University […]

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Larry Fraser

Larry holds a BA in Political Science from American University and MA in Political Science from San Diego State University. He grew up in San Diego and attended Saint Augustine High School.  Larry is currently in his ninth season with Hammer Prep. Larry regularly practices Kung Fu, has a German Shepherd named Lucy and loves watching the NFL.

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Rachel Frank

Rachel graduated from the University of California, San Diego with a BS in Bioengineering. She has been tutoring for the last 10 years, focusing on all levels of math and science including AP courses. She loves teaching and helping students not only do better in school, but also develop their drive and passion for learning. […]

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Mimi Kiang

Mimi holds a BS in Mathematics from the University of Utah and M.Eng. in Bioengineering from UC San Diego. Mimi grew up in Utah and was a National Merit Scholar and Presidential Scholar.  She is a member of the Society of Women Engineers, Pi Mu Epsilon and was a Kennecott Scholar. In her free time, Mimi enjoys […]

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Rishi Iyengar

 Rishi graduated from the University of Maryland, College Park with a BS in Finance, after scoring a 2370 on his SAT. He tutored for families in the DC area for four years, covering a wide range of subjects: all levels of math, AP Biology, honors Chemistry, and economics and finance. He is currently pursuing a master’s degree […]

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Wynneth Requieron

Wynneth graduated from UCSD with a BS in Chemical Engineering. At UCSD, she served as president of a biofuels research group and a global outreach program. She has been tutoring a variety of subjects since 2012, including chemistry and math up through Calculus. In her free time, she likes to watch sports and eat chips, […]

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