Hi. We're Partners In Pediatrics. You can call us PIP.

We'd love to tell you a little bit about our practice so you can get to know us.

Partners In Pediatrics Metro Denver Colorado Doctor Pediatrician Child Health Prenatal Expecting Expectant Mother Family Father Baby Newborn Infant Hospital Care

From birth through young adulthood, PIP partners with you to provide whole-child care that supports your child’s health, growth, and happiness at every stage. Each family is different, and we work closely with you to create your child's best life from day one.

Naturally Healthy Kids Handbook

Every PIP family receives a copy of our handbook, Naturally Healthy Kids. This book - available in both spiral-bound and eBook format - is an A to Z guide for illness and wellness. Each common ailment listed in the book is covered in detail with a lengthy description, list of potential causes, expected course of the illness, information on its contagiousness, home care, prevention, homeopathic remedies and information on when to call a health-care provider.

It’s an invaluable resource for our families - especially for first-time parents!

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Meet Our Team

At Partners in Pediatrics, our providers work as a true team. We share patients, which means you never have to worry about a provider being “closed” to new families. Your child always has access to care when you need it.

For routine check-ups and ongoing care, you’re welcome to request continuity with a specific provider whenever possible. When urgent or same-day concerns come up, we prioritize getting your child seen quickly, which may mean seeing the first available provider from our trusted team.

All of our providers care for patients at both of our locations, allowing flexibility and access, though individual schedules vary. No matter who you see, you can feel confident knowing every provider is aligned in our approach and familiar with your child’s care.

Elspeth "Lisa" Miller, MD

Lisa was born in Delta, Colorado.

She received both her B.A. in Economics and her Medical Degree from Tulane University in New Orleans.

She returned to Colorado to complete her internship and residency at the University of Colorado Health Sciences Center.

Lisa is married and has two sons.

In her free time, she enjoys mountain biking, kayaking, and fly-fishing.

She is also an avid traveler and a diehard Bronco fan.

Lisa’s primary area of interests are newborn and toddler care.

Mike Simones, DO

Mike was born in Denver, Colorado.

He completed his undergraduate work at Western State College in Gunnison, Colorado and attended medical school at Kirksville College of Osteopathic Medicine in Kirksville, Missouri.

He completed his residency in pediatrics at Cardinal Glennon Children’s Medical Center in Saint Louis, Missouri, graduating in 2011.

Mike and his wife have a daughter and enjoy hiking, outdoor photography, music and sports.

His special pediatric areas of interest include osteopathic medicine and childhood obesity.

Emily Granath, MD

Emily was born in Visalia, California.

She grew up in Aurora, Colorado and has long loved the mountains.

She received her B.S. in Biomedical Sciences form Texas A&M University, graduating with honors.

She attended The University of Texas Medical School at Houston.

Emily completed her internship and residency in Pediatrics at UCLA.

She joined the Partners in Pediatric team in 2011.

She is married and has two children, whom she adores. Emily and her family enjoy biking, skiing, and anything outdoors. They are also avid travelers.

Emily’s primary areas of pediatric interest are newborn and adolescent care.

Meg Harline, MD

Meg was born and raised in Houston, Texas.

She earned her undergraduate degree in Microbiology from Brigham Young University, then graduated with honors from Texas A&M Health Science Center College of Medicine.

Meg completed her pediatric residency through Baylor College of Medicine at The Children’s Hospital of San Antonio. She then moved with her family to Colorado and joined Partners In Pediatrics in the fall of 2018.

Meg is married and has three children.

She enjoys running, snowboarding, traveling the world, volunteering in her community and spending time with her family.

Her special areas of interest in her practice include preventive care and working with children with special healthcare needs.

Ying Deng, MD

Ying was born and raised in Southern China. She became familiar and fell in love with Colorado when she worked as a Postdoctoral Fellow at the University of Colorado Anschutz Medical Campus in Aurora. Ying completed her medical school at Nanjing Medical University in Nanjing, China. She completed her residency in pediatrics at the Icahn School of Medicine at Mount Sinai, Brooklyn Hospital Center. She also finished a 2-year Integrative Medicine fellowship through the
Academy of Integrative Health & Medicine in La Jolla, California. She worked at San Luis Valley Health in Alamosa southern Colorado for 3 years before moving back to Centennial with her husband to be closer to family.

She enjoys spending time with family, gardening, traveling, hiking, and cooking in her free time.

She provides full scope of pediatric care. Her areas of special interest are integrative medicine, behavioral and developmental pediatrics.

Ariana Stewart, MD

Dr. Ariana Stewart is a Colorado native, born and raised in Golden. She earned a degree in engineering from the University of Colorado Boulder before completing her Master of Public Health and medical degree at the University of North Carolina at Chapel Hill and Duke University School of Medicine. Dr. Stewart was thrilled to return to Children’s Hospital Colorado for her pediatric internship and residency, fulfilling her long-held goal of coming home to practice medicine.

From medical service in Rwanda to breastfeeding medicine certification, research, and health policy work, Dr. Stewart has consistently been devoted to improving healthcare delivery. An especially meaningful chapter in her journey as a pediatrician began last year with the arrival of her identical twin daughters, deepening her perspective on caring for children and supporting families.

Dana McHale, PA-C

Dana was born in Portland, Oregon.

She completed her undergraduate studies in Chemistry and German at The University of Denver.

She graduated from the Child Health Associate/Physician Assistant Program at the University of Colorado School of Medicine and joined Partners In Pediatrics in 2003.

Dana is married and has four daughters.

She enjoys hiking and skiing with her family, running with her dog, doing art projects with her girls, and volunteer work.

Her areas of special interest are childhood behavior, adolescents, and diabetes.

Ben Jessen, PA-C

Ben is a Colorado native, receiving his undergraduate degree from the University of Northern Colorado in Human Biology and his graduate degree in physician assistant studies at Midwestern University, Glendale. Ben has almost 20 years of experience as a physician assistant in pediatrics and is the author of Obvious Parenting: Seven Simple Keys to Supporting Wellness. His areas of special interest include preventative medicine, ADHD, and allergies.

Ben is married with two teenage boys and enjoys all the outdoor activities Colorado has to offer, working out, and spirituality.

Greg Bingham, PA-C

Greg was born in Antioch, California.

He received his undergraduate degree in business administration from San Francisco State University in 2004.

Shortly after, he moved to Colorado to work with at risk youth in a residential treatment facility where he led wilderness trips.

He went on to complete a Masters of Physician Assistant Studies in the Child Health Associate/ Physician Assistant Program at the University of Colorado School of Medicine.

Greg‘s primary pediatric interests include promoting a healthy lifestyle and adolescent care.

In his free time, you may find him mountain biking, snowboarding, traveling abroad or strumming on his mandolin.

Jimmy Amettis, PA-C

Jimmy was born in Illinois and fell in love with Colorado when his family moved to the little mountain town of Salida when he was 10.

He graduated with a Bachelor of Science degree in Psychology from the University of Denver in 2008.

He went on to complete the Physician Assistant program at Red Rocks Community College and earned his Master of Medical Science degree from St. Francis University in 2014.

Jimmy is passionate about working in children’s health and is interested in the holistic approach to medicine.

He loves to laugh and does his best to make kids smile every day.

In his free time, he enjoys exploring the Denver restaurant scene, hiking, being outside, art, cinema, cooking, and spending time with his family and friends.

He has yet to hear Greg play the mandolin despite his many requests.

Stephanie Lavigne, PA-C

Stephanie was born and raised in small town Idaho.

Her passion for volleyball took her to Portland, Oregon where she competed for Portland State University while earning her Bachelor’s degree in biology and community health.

While working in orthopedic research she chose to pursue a career in medicine and went on to graduate from the University of Iowa Carver College of Medicine Physician Assistant program.

Since then she has worked in the urgent care setting where her love of caring for children blossomed.

She is most interested in orthopedic injuries as well as general health and is excited to help kids of all ages learn to make healthy choices.

She has found a home in Colorado with her husband and baby girl.

In her spare time, Stephanie most enjoys being with family and friends, spending time outdoors, cooking, baking, and playing volleyball.

Kaci Day, CPNP

Kaci is a Colorado native and a Certified Primary Care Pediatric Nurse Practitioner.

After completing her bachelor’s degree in neuroscience at the University of Colorado, she moved to Baltimore, Maryland to pursue a career in nursing where she graduated from Johns Hopkins University School of Nursing with both her Bachelors and Masters of Science in Nursing. Kaci worked as a Registered Nurse in Pediatric Oncology at the Johns Hopkins Hospital for several years before moving back to Colorado to start her career as a pediatric nurse practitioner. 

She loves kids, developing strong relationships with her patients and family members, and promoting health through patient education. In her free time she enjoys running, hiking, skiing, and spending time with family and friends!

Cristee Cramer, PA-C

Cristee was born and raised in Grand Rapids, Michigan.

She quickly found a love for springboard diving and was able to be a part of Michigan State University’s Swimming and Diving team, while also earning her Bachelor’s degree in Kinesiology with a specialization in Health Promotions.

Her love for the mountains moved her and her husband to Denver, CO where she completed her Child Health Associate/Physician Assistant program at University of Colorado School of Medicine in 2022.

She enjoys backpacking, climbing and skiing. She also loves to bake and do random crafts.

Cristee loves making connections with her patients and families with a focus on building a healthy lifestyle.

Jessy Boon, LPCC

Jessy is originally from Northern Virginia, where she was born and raised. She graduated from East Carolina University with a Bachelors in Elementary Education and earned a Masters in Counselor Education. After graduation, she moved to Colorado and has loved it ever since.

Jessy worked as an elementary school counselor for two years before becoming a therapist for a private practice where she worked primarily with children and adolescents. Working with children is her passion. She loves helping others find their most successful self by listening to them and advocating for them.

In her free time, Jessy enjoys being creative in many ways like painting, writing, and coloring. She also enjoys taking her two dogs, Leo and Daisy Grace, to the dog park or on walks in the park.

Tasha Whatley, Practice Manager

Tasha is a Colorado native, born and raised in Denver.

She attended South High School and Metropolitan State University of Denver.

Tasha has been with Partners In Pediatrics for 12 years, and supervises our staff of 20 employees at Jasmine, including the billing department.

She is an avid soccer fan and an active soccer player year round, indoors and outdoors.

Tasha is married and her son works in the billing department at Partners in Pediatrics.

Michael Battock, Director of Operations

Michael has been in medical management for over 25 years in operational and financial roles working with cardiology, anesthesia and infectious disease groups prior to joining Partners in Pediatrics as the Director of Operations in 2024. He went to school at the University of Colorado – Boulder for his undergraduate degree and the University of Colorado – Denver for his MBA.

Michael is married with two grown children who are both in the medical field and in his free time he enjoys being outdoors, exercising and watching all the Colorado sports teams.

Our History

Partners In Pediatrics was formed in 1977 by Dr. Jordan Klein, Dr. Jerry Rubin, Dr. Dean Prina, and Dr. Nancy Lataitis with the primary goal of providing the highest quality and most comprehensive pediatric health care available in a private-practice setting. While all of our founding partners are now retired from the practice, Partners in Pediatrics continues to provide care in the spirit of the founders’ vision for the practice: nurturing the whole child and treating our patients with the same care and compassion as we do our own children.

Many of our PIP patients are legacies whose families have been PIP patients for multiple generations.

Dr. Jordan Klein

Dr. Jordan Klein was born and raised in New York. He attended Case Western Reserve University for his premedical studies and graduated from medical school at the University of Louisville in 1974. He completed his internship and residency in pediatrics at the University of Miami in 1977. In that same year, he moved to Denver and established Partners in Pediatrics. Dr. Klein is married and has two grown children. He enjoys tennis, the arts, sports, and traveling with his wife. His areas of special interest were preemie babies, allergy and asthma. Dr Klein retired from the practice in 2007.

Dr. Jerry Rubin

Dr. Jerry Rubin was born in Ogden, Utah. He finished his premedical education at Weber State College. He attended medical school at the University of Utah, graduating in 1977, and completed his internship and residency in pediatrics at the University of Colorado Health Sciences Center. In 1980 he joined Dr. Jordan Klein (our now retired founding doctor) in practice. He is married and has three married children and two grandchildren. He enjoys sports (especially triathlons), wood-working and gardening. His areas of special interest are integrated medicine and behavior management. Dr. Rubin retired from the practice in Summer 2023.

Dr. Dean Prina

Dr. Dean Prina was born in Reno, Nevada. He completed his undergraduate premedical work at Stanford University and attended medical school at the University of California, San Diego, graduating in 1979. After completing his pediatric internship and residency at the University of Colorado Health Sciences Center, he joined Partners in Pediatrics in 1982. He enjoys music, travel, the arts and has been a remarkable force in Denver with his outstanding non-profit board service and volunteer work. His areas of special interest were newborns, special-needs children, writing education materials and holistic care. Dr. Prina retired from the practice in 2017.

Dr. Nancy Lataitis

Dr. Nancy Lataitis was born in Pigeon Forge, Tennessee near the beautiful Great Smoky Mountains. She was inspired to become a pediatrician after watching her grandfather, a general practitioner, care for families. She completed her undergraduate work at the University of Tennessee in Knoxville, then graduated from Vanderbilt University Medical School. She completed her internship and residency at the University of Colorado Health Sciences Center in Denver where she met the Partners In Pediatrics ‘family’ in 1987. Dr. Lataitis is married and has two children. She enjoys skiing, travel, and time with her family and two dogs. She has been an active volunteer in the community and serves on the Board of Directors for Adam’s Camp, a Colorado non-profit providing intensive therapy for children. Her special interests are adolescents, asthma, and children with special needs. Dr. Lataitis retired from the practice in 2024.

You’ve got questions. We’ve got answers.

Does PIP offer lactation support?

We are deeply committed to supporting nursing families and helping breastfeeding be successful for those who choose it. Partners In Pediatrics maintains strong relationships with trusted community lactation consultants and resources, many of whom provide in-home support. We have found that this personalized, one-on-one approach often offers the most meaningful help during the early days, while our providers continue to support you and your baby at every visit.

What if I have additional questions?

We’ve done our best to thoughtfully address the most common questions expectant parents have as they prepare to welcome a new baby. That said, we understand that every family and every situation is unique, and we are here to support you. If there are specific prenatal diagnoses or individual medical concerns, we are happy to offer a complimentary call with one of our owner physicians to review your questions and help guide next steps.

Partners In Pediatrics Metro Denver Colorado Doctor Pediatrician Child Health Prenatal Expecting Expectant Mother Family Father Baby Newborn Infant Hospital Care

It's easy to become a PIP patient.

Here's how.

We have two Metro Denver locations to make it easy for you.

I-25 & Colorado Blvd.
I-25 & Lincoln Ave.