Jim Miller

Founder & President
Blog Posts

Jim Miller founded Momentum Communications Group in 2012 to specialize in nonprofit PR. He and his team seed stories of positive change for nonprofits at the forefront of health, education, sustainability, the arts and a wide range of social services, including Big Brothers Big Sisters of New York City, The Fresh Air Fund, Charity Navigator, National Eating Disorders Association and New York Society for Ethical Culture. In 2019, Jim and his team led a year-long campaign celebrating the 50th anniversary of the Woodstock Festival for Bethel Woods Center for the Arts.

Jim was honored in 2023 as one of City & State’s Responsible 100, an annual list recognizing New York’s most outstanding corporate citizens setting new standards of excellence, dedication and leadership in improving their communities. His firm was named to Observer’s PR Power List of The Top PR Firms for Nonprofits and Causes and won Nonprofit PR Agency Team of the Year at the Nonprofit PR Awards.

Jim has been featured on NBC-TV, Forbes, PR Week and PR Daily. He is a founding member of Mission Up, an alliance of nonprofit specialists. Jim began his PR career at Burson-Marsteller in the 1990s and was Managing Director of Dentsu Communications before launching Momentum. He is a graduate of the John F. Kennedy Schule in Berlin, Germany, and holds a BFA from New York University. He lives with his husband and son in Westchester County, New York.

In the Media

PR Daily: A Day in the Life

Fun Fact: Jim is a tenor and board member of the Hudson Valley Singers, one of Westchester County's oldest choral groups.

Kylee Siaw

Account Director
Blog Posts

Kylee joined Momentum in 2017 and has since led the creation, management and implementation of strategic public relations campaigns for clients including Charity Navigator, the National Eating Disorders Association, Helen Keller Intl, American Brain Foundation and The Fresh Air Fund. In 2024, Kylee was named a PRSA 15 Under 35 Honoree, a recognition of the most inspirational and ambitious young talent working in and serving the communications industry in the New York City metro area. Kylee is a graduate of Columbia University’s Graduate School of Journalism and former breaking news reporter for CNN. Her writing has been published in the New York Daily News, Crain’s New York Business, City Limits, USA Today, The Hill and on CNN.com. She uses her reporting experience to establish strong relationships with reporters and editors at top-tier outlets like The Wall Street Journal, The New York Times, The Washington Post, TIME, CNBC and USA Today, as well as on air on CNN, NBC Nightly News, CBS, NPR, and New York’s local media.

In the Media

Bucket List: Kylee hopes to run a half marathon in every US state... she has a long, long way to go

Book Worm: She is the author of a children's book called The Golden Crayon

Zachary Halper

Media Supervisor
Blog Posts

Zach joined Momentum in 2016 after a career that saw him work in journalism and marketing, all in pursuit of a larger passion for nonprofits and writing. He started his career in earnest drafting social media and eNewsletter copy for The NonProfit Times, a magazine dedicated to covering the nonprofit sector. The editor-in-chief soon realized Zach had a knack for journalism, and assigned him his first story. He wrote many more during his four years at the magazine, covering topics ranging from fundraising to management.

At Momentum, Zach helps craft the overall media strategy for accounts, pitches media and writes and places opinion pieces. Over the years, he’s placed stories in major national outlets including The Wall Street Journal, USA Today, MSNBC, The TODAY Show and Bloomberg. Zach has helped scores of clients build their national profile, including the American Ethical Union, Generation Citizen, Bethel Woods Center for the Arts, and Education Through Music. Zach led a webinar on writing and pitching op-eds for Candid, a national resource for professional development and best practices for nonprofits.

In the Media

Bucket List: Zachary hopes to visit New Zealand one day (and not just because The Lord of the Rings was filmed there).
Favorite Star Wars Movie: Return of the Jedi

Stephanie Gentile

Account Supervisor
Blog Posts

Stephanie Gentile is an Account Supervisor at Momentum Communications Group. She leads media and social strategy for some of Momentum’s top nonprofit clients, including the Lymphoma Research Foundation and Charity Navigator, spanning fields from education and healthcare to philanthropy and military family support. Before joining Momentum in 2022, she worked in government and infrastructure communications for New York State Sen. Todd Kaminsky and the MTA’s Long Island Rail Road Expansion Project. Those experiences taught her to translate complex issues — from public policy to public works — into human-centered stories that inspire understanding and action.

At Momentum, Stephanie is known for her creative instincts, calm leadership and collaborative spirit. She has led campaigns that earned national attention and helped Momentum become a 2025 PR Platinum Awards finalist for Best Nonprofit Media Relations Campaign. She believes great PR starts with empathy and thrives on connection. A graduate of SUNY Cortland with a bachelor’s degree in communications, Stephanie lives in Astoria and brings the same curiosity that drives her work to her personal life: taking photographs, listening to podcasts that explore our connections to each other and the universe and planning her next trip to Italy.

Lisa Quirindongo

Senior Media Strategist
Blog Posts

A native New Yorker, Lisa has always loved a great story. As a child, she remembers being enthralled by her many aunts who would mix humor with a sprinkle of fright when sharing episodes from their childhood in Puerto Rico. Lisa developed her inner storyteller as a student at Columbia University. After graduating, she zeroed in on a television broadcast career. As a reporter, she would often admire the PR people who were especially good at turning out media.

In the Media

Never Too Late: Lisa learned how to swim as an adult, telling all it's never too late to learn.
On Her Bookshelf: She owns over 100 cookbooks and countless food magazines.

Ogo Sylla

Senior Account Executive
Blog Posts

Ogo is passionate about leveraging the power of storytelling to drive social impact and promote advocacy efforts. Prior to joining Momentum, Ogo graduated from Syracuse University to become a sports journalist and then Baruch College to bring his communications skills to the nonprofit sector.

Outside of work, he indulges in storytelling around a virtual table where he crafts high-fantasy adventures alongside his Dungeons & Dragons group.

Andrew Smith

Senior Editor & Strategist
Blog Posts

Andrew brings more than two decades of experience as a newspaper journalist to his role at Momentum Communications Group, where his work includes crafting opinion pieces for clients, maintaining the high standard of written work that Momentum produces, client messaging and strategy and more. Earlier, he worked at The Times-Picayune in New Orleans and Newsday in New York, where he was part of a team that won a Pulitzer Prize for spot news. His work included stories that explained why there’s no easy way to dispose of nuclear waste and others that showed how a prosecutor’s office prevented defendants from getting fair trials by withholding evidence from them. He also helped a new generation of reporters learn how to find information and explain it when he taught at the Stony Brook University School of Journalism.

The commitment to fairness that buttressed his work in journalism drew Andrew to Momentum. He has a proven track record of writing and placing opinion pieces for clients, including Ackerman Institute for the Family, Great Jobs KC, American Brain Foundation, Blue Star Families and numerous others. Andrew has a degree in journalism from Syracuse University.

Davin Turkewitz

Senior Social Media Strategist
Blog Posts


Caroline Hughes

Assistant Account Executive
Blog Posts

Caroline is a writer who brings her lifelong love of language and storytelling to Momentum. She studied at Fordham University, where she double majored and earned a B.A. in English and History. She went on to earn a Master’s degree in Creative Writing from Royal Holloway, University of London, where she solidified her passion for writing and travel. Prior to Momentum, she interned at a public relations firm and helped manage social media for Fordham’s study abroad program in London. She pairs her creative writing skills with her passion for social media to craft compelling and unique content for clients such as the Moore Family Charitable Foundation.

In her free time, Caroline works on her series of fantasy novels, which she began writing in college. When not reading or writing, she can be found at the barn with her horse, who is coincidentally named Read. (How’s that for consistent branding?)