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We admire your work. You are helping to transform the wine industry and our view of accountants.

Linda Reiff, Executive Director, Napa Valley Vintners

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Erica Riddle, CPA is a partner in Brotemarkle Davis & Co. specializing in tax and assurance services, operational reviews and business consulting. Erica also serves as the firm's wine industry analyst, spearheading the firm's efforts to provide and share key insights into the wine business with our customers. Erica joined BDCo in 2013 and has both a Masters in Accounting from California State University, Sacramento and a Masters of Science in Taxation from Golden Gate University. She is also certified in Strategic Performance Management. Prior to joining BDCo, she was the Labor Optimization Manager at Six Flags Discovery Kingdom. Although her office was located right next to a roller coaster, Erica says her favorite attraction at the park was the tigers she first got to know as cubs. As a knitting hobbyist, Erica says the key to her success is patience and concentration, which also makes her a wizard at spreadsheets, programming, and all things accounting. She also holds the unprecedented distinction of being a candy maker and is a "third-generation Riddle Brittler". Erica is a CPA licensed by the California Board of Accountancy.

Erica RiddleExcelerator

A graduate of North Dakota State University, Summer majored in accounting and minored in fraud investigation, finding her way to the field of accounting almost by accident. Initially planning a career in law enforcement, everything changed when she took her first accounting class and discovered a new passion. Specializing in Individual and Business Tax, Summer is committed to finding tailored solutions for her clients through thoughtful communication. She firmly believes that a one-size-fits-all approach doesn’t work and takes pride in building strong client relationships to address unique needs. Outside of work, Summer is an avid traveler and finds joy in exploring new places and cultures. A proud animé enthusiast, she admires the profound teachings and life lessons delivered by its characters. Her hobbies also include Pokémon, reading (especially Stephen King novels), and spending time with her growing family. Summer cherishes the years she spent living in the beautiful country of Bahrain, which enriched her love for different cultures and experiences. Summer is a CPA licensed by the Montana Board of Public Accountants.

Summer ZitoAnimated Taxster

*Definition is here. When asked about her favorite part of her last job, Alex Castro was quick to respond "the view". An avid appreciator of both the beauties of nature and the essence of people, one of her favorite non-work activities is to head to the beach to watch the sunset. Alex is a Napa native with experience in the wine and sports training industries. Arriving for her first day of work in the middle of the Covid-19 stay at home order, Alex met the team online. Her upbeat energy and positive, infectious attitude are a great addition to our customer service team - both in person and online.

Alexandria CastroPhi-localist*

Erica Umphreyville has always been surrounded by numbers and accountants—from her parents to her siblings—but her true passion lies in making a meaningful impact on her community and for her clients. A graduate of Southern Methodist University in Dallas, Texas, Erica holds a Master of Science in Accounting. She honed her expertise at a Big 4 CPA firm, focusing on the governmental and non-profit sectors, and more recently served as a Controller, overseeing the financial operations of 24 Title I charter schools. Erica’s deep connection to her work is inspired by the powerful women in her life, especially her mother, who rose from an Accounts Payable Manager to a Director of Finance in the Biotech industry, embodying the hard work and dedication that Erica values. Though based in Texas, Erica is excited to work with wineries, leveraging her unique blend of analytical prowess and creative problem-solving to unravel complex accounting challenges and help clients achieve their goals. When she’s not delving into data or strategizing with clients, you might find Erica appreciating nature, whether it’s walking on a trail near her apartment or engaging in a competitive game of pickleball. She also enjoys exploring her culinary side, cooking Italian food, and growing her own herb and vegetable garden. Erica is a CPA, licensed by the Texas State Board of Public Accountancy

Erica UmphreyvilleAltruistic Auditor

Heather Sprauve is a native of Deer Park, California. She attended Pacific Union College (PUC) in Angwin, then transferred to their sister college, Atlantic Union College in South Lancaster, Massachusetts, before returning to Angwin to complete her degree. She started out as an art major but after taking her first business class, discovered an aptitude for accounting and made that her major. Heather moved to the Virgin Islands where she married and spent 18 years working for an accounting firm. She worked for BDCo part-time for a few years and then following the devastating impact of hurricanes Irma and Maria, returned to California. While she enjoys being back in California, Heather misses her daily view of the Caribbean Ocean from almost any spot on the 31 square mile island of St. Thomas. Her interests include hiking, traveling and exploring new places.

Heather SprauveGlobal Gallivanter

Known as 'The Nordic Decoder' for his heritage and talent for simplifying complex systems, Daigen Afdahl brings technical expertise and personal insight to the BDCo team as Tax Manager. With roots on a Wisconsin dairy farm and a passion for uncovering the stories behind numbers, he specializes in helping businesses and individuals navigate tax code sections while leveraging data to support informed decision-making. Daigen earned his Bachelor of Science in Business Administration and Master of Professional Accountancy from Montana State University in Bozeman, where he honed his problem-solving skills and practical expertise. He gained hands-on experience as a volunteer preparing tax returns for residents of remote Alaskan villages, followed by advancing roles in public accounting, where he developed extensive skills in tax return preparation, staff management, and strategic financial planning. Beyond the office, Daigen’s creativity extends to the kitchen, where he crafts gluten-free and dairy-free meals inspired by a recent lifestyle change. A lifelong learner and problem solver, he thrives on helping clients optimize their tax strategies, tackle operational challenges, and achieve their business goals in complex industries.

Daigen AfdahlNordic Decoder

Rebekah Kramer, CPA is a partner in Brotemarkle Davis & Co. specializing in assurance services and business consulting. She is originally from Napa, California and is a Justin-Sienna High School alumnus. She is a graduate of Concordia University, Irvine where she majored in Business Administration with a dual emphasis in Marketing and Accounting. She spent three years working for a Southern California accounting firm before returning to the Napa Valley. While she may not find many opportunities to apply her SoCal yacht-counting expertise (she once had to count yachts docked in ports from San Diego to Newport), her diverse audit skills honed from working with customers in Oil and Gas, Manufacturing, and Real Estate are a big plus. Rebekah first stretched her entrepreneurial muscles when she founded a chapter of co-ed business fraternity, Delta Sigma Pi, at Concordia. She hopes to apply what she learned not only to her role as an auditor but also to some day opening an animal shelter. When she is not busy auditing, you might find Rebekah exploring a new trail or revisiting one of her favorite national parks – Denali in Alaska. Rebekah is a CPA licensed by the California Board of Accountancy.

Rebekah KramerGoddess of GAAP

Diane Leenders is a graduate of Saint Mary's College in Moraga, California. She is an experienced tax professional who has previously held audit positions in both public accounting and industry. Diane is an open water swimmer who regularly competes, along with members of her family, in masters swimming events. She enjoys the feeling of gliding through the waves and the resulting sense of calm. Water is a recurring theme in her life, as she met her husband on a water skiing adventure. Diane is an early riser and her daily ritual begins with coffee and a view of the rising sun. Diane cherishes this time alone and feels that "each day provides an opportunity to make that day meaningful." Diane is a CPA, licensed by the California Board of Accountancy.

Diane LeendersIlluminator

Dawn Marshall is a Napa native. She briefly left the Napa Valley for a sojourn to Miami, Florida but returned to Napa to begin her professional career. Her first job was in a florist, before moving to high-end hospitality, then winery accounting and for the past 17 years she has been serving in a number of different roles in city government, culminating in the role of Human Resources and Administrative Manager. She is a two time recipient of “Award of Financial Reporting” by the Government Finance Officers Association. When she’s not helping “humans with resources”, she is likely to be gardening, quilting, or arranging items in her home to be more aesthetically pleasing. Dawn is the mother of 3 children – 2 sons and a daughter who all seem to have inherited some of her creative abilities. As a young woman, Dawn went off to purchase her first automobile, a Renault, at a local Napa automobile dealer. While she was unsuccessful in securing her dream automobile, she ultimately walked away with a first date with her now husband of 29 years.

Dawn MarshallTeam Harmonizer

Guy Carl has been a CPA with BDCo since 1992 and a partner since 2005. He specializes in helping small wineries with tax preparation and planning, financial statements, forecasting, and accounting software guidance. Guy enjoys helping business owners understand how their businesses work and perform, and empowering them to be more successful. Born and raised in the Napa Valley, Guy holds an accounting degree from St. Mary's College. He is a past-active member of the Napa Active 20-30 Club, an organization dedicated to helping children in the community. An avid outdoorsman, Guy can often be found alongside a mountain stream or floating on a lake with a fishing pole nearby. Guy is a CPA licensed by the California Board of Accountancy.

Guy CarlProfit Prophet, CFO

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1000 Main Street, Suite 250
Napa, CA 94559

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707-963-4466

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email  :  info@bdcocpa.com

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