Mei Tang

Mei Tang, Pharm.D., MBA, has comprehensive retail, specialty, and mail pharmacy, managed care, and PBMexperience. She held various positions in fortune 500 companies as well as private and startup pharmacy companies. Ms. Tang currently works as President at Two Trees Consulting where she is responsible to help healthcare companies grow and succeed. She provides client assistance in pharmacy accreditation (ACHC, URAC, NABP, and other accreditation organizations), operational efficiency, policy and procedure development, startup, project management, business development, infrastructure build out, system implementation,and staff training and development.

Prior to starting her own consulting business, Ms. Tang served as Vice President of Operations at ModernHEALTH Specialty Pharmacy (now Kroger Specialty Pharmacy) responsible for specialty pharmacy operations, and patient care/call center management.

Ms. Tang also worked as Director of Pharmacy at OptumRx, Director of Formulary Management at MedImpact, and Director of Pharmacy at Anthem Blue Crossfor 10 years. Her previous experiences also include drug data management at First DataBank, pharmacy network management at Blue Cross Blue Shield of Michigan, hospital and retail pharmacies.

A graduate of Wayne State University College of Pharmacy, Ms. Tang earned her from University of Colorado and her MBA degree from University of California, Irvine.

Ms. Tang enjoys spending her spare timelearning and advocating for women’s health. She loves spending time with family and friends, outdoor adventures, yoga, reading, and travel.

John McMillen

John McMillen, Vice President of Business Development

For more than 20 years, John has engaged with inpatient, retail and specialty pharmacies serving hospitals, long term care facilities, Federally Qualified Health Centers (FQHC)and other health care providers.  His focus is to provideenhanced patient outcome solutionsbalanced with resource issues, staffingconstraints, software solutions and cost containment strategies.

John has abackground in finance and accounting in addition to his operations, sales, and analytics roles.  He focuses on pharmacyoperations and leadership, financial performance, proformas and capital expense needs, 340B program impacts,Employer PBM reviews and technology gap assessments.

Past roles include National Operations Director for Outpatient and Specialty Pharmacy, Director ofBusiness Development and Analytics, Sales, and leading Operations for Remote Pharmacy.

In 2023, John became part of Two Trees Consulting, Inc., assuming the role of VP of Business Development, where he plays a critical role in the company’s growth and development.

John Barrett

John Barrett, RPh, MBA, CHC – Pharmacist Consultant at Two Trees Consulting, is a registered pharmacist with an extensive professional background spanning nearly four decades. He has accumulated diverse experience across various pharmacy sectors, including community, mail order, pharmacy benefit management (PBM), and accreditation. Before joining Two Trees Consulting, John held key positions including Associate Vice President of Compliance and Quality, Associate Vice President of Operations, and Vice President of Account Management and Business Development at PerformRx. Prior to that, John served as an accreditation surveyor at URAC.

John holds a Master of Business Administration from LaSalle University and a Bachelor of Science in Pharmacy from the Philadelphia College of Pharmacy. He serves as the Vice-Chairman of URAC’s accreditation committee and holds certification in Healthcare Compliance from the Compliance Certification Board.

Outside of his professional commitments, John dedicates his leisure time to volunteering at Martha’s Choice Marketplace and Community Farm. He also serves as an appointed member of the East Norriton Planning Commission. Passionate about music, John is a pianist and a member of the Bethany Music Ministry, a local contemporary Christian band. He further contributes to his parish church as a cantor. Alongside his wife Melissa, John enjoys traveling and cherishing moments with their family, which includes three dogs, and a circle of friends.

Maribel Chan

Maribel Chan, RPh, received her California Pharmacy License in 1999.  Her experience ranges from the fast paced and high-volume retail pharmacy setting to patient-focused specialty pharmacies.  Maribel has held various positions of staff pharmacist, Pharmacist In Charge and senior clinical pharmacist responsible for medication dispensing, clinical review, disease management, and quality improvement.  She has experience in ACHC and URAC accreditation and successfully led the team to full accreditation. She is passionately committed to the care and well-being of her patients and the success of the companies that she worked for.

Maribel joined Two Trees Consulting, Inc in 2023 as a pharmacist consulting helping client achieve URAC and ACHC accreditation.

She lives in Los Angeles with her husband and son.  She enjoys gardening, taking walks and is actively involved in local community projects.

Jennifer Wester

Jennifer Wester, RN, Accreditation Consultant, has nearly 30 years of experience in the healthcare industry. She began her career as a clinical nurse and excelled at promoting quality, excellence, inspiring evidence-based change while cultivating an environment of learning.  In 2010 she joined a healthcare consulting company, where she worked with a team of expert consultants guiding health plans and medical management organizations (Health Plans, Pharm, IRO’s, UM/WCUM,CM,CVO’s) through initial accreditation and reaccreditation. Jennifer also sub-contracted with Innovative Healthcare Consulting, Inc. as a health care consultant working with CVO’s, IRO’s and Telemedicine organizations to attain accreditation. In the fall of 2013, Jennifer began working with URAC, as a contracted and certified URAC reviewer.


Jennifer joined Two Trees Consulting as the URAC Accreditation Consultant in 2022. She brings her years of experience and expertise in standards interpretation, policies and procedure development, business development, and the talent to create an infrastructure to support the program and maintain ongoing compliance with accreditation standards.

Irina Gorovaya

Irina Gorovaya, RN, Nurse Consultant

Irina Gorovayahas over 20 years of extensive healthcare experience, including long term, acute care, and home health.  With over 10 years of nursing experience and MBA in Health Administration, Irina was also able to experience a professional growth from a field nurse to the Owner/Administrator of a home health agency. Irina’s areas of expertise include telehealthand professional competency training. Irina was a featured speaker at the Home Care Association of Florida and Colorado as well as Accreditation Commission for Health Care. She also published “3 Important Things to Know When Choosing a Telemonitoring Provider” article in Multibrief and “Why Home Health is Going Virtual with Direct Care Staff Competency Training” in Home Health Care News.


Irina joined Two Trees Consulting in 2021 as a nurse consultant helping clients achieve ACHC home health and home infusion therapy accreditation.

Kathleen LaParne

Kathleen LaParne, PharmD, Pharmacist Consulting at Two Trees Consulting, is a New York State licensed pharmacist with 31 years of experience in many areas of pharmacy practice. She has 23 years of acute care hospital experience, including 17 years in leadership roles. She is well versed in policy, procedure and forms development in both operations and clinical arenas. She has participated in many accreditation and site visits by the Joint Commission, DNV, and the NYS DOH, where the focus was on Medication Management standards.

Kathleen had obtained two advanced sterile compounding certificates through ASHP before she obtained her BCSCP certification in 2019. She has co-designed and supported the opening of a fully compliant USP<797> and <800> cleanroom suite, along with corresponding document development for procedure, quality control and assurance including CAPA, and staff education.

Kathleen’s goal is to apply her vast experience and expertise to gap, support and teach regulatory compliance in sterile and non-sterile compounding for our clients at Two Trees Consulting, allowing for the provision of the highest level of safe patient care possible.

Amy Summers

Amy Summers, PharmD, BCBSP, Pharmacist Consultant at Two Trees Consulting, is a regulatory compliance expert in the pharmaceutical compounding industry. She earned her PharmD degree from the University of California San Francisco and was among the first pharmacists in the nation to earn a Board-Certified Sterile Compounding Pharmacist (BCSCP) credential. Dr. Summers has spent her entire career as a pharmacist in various settings centered around non-sterile and sterile compounding. She has formerly served as Director of Operations and Pharmacist in Charge at organizations engaged in compounding and as Managing Director of an FDA-registered 503B outsourcing facility.

With extensive experience in USP standards, accreditation, cGMP, and regulatory compliance, Dr. Summers has also served as an expert witness for matters related to compounding.

Amy joined Two Trees Consulting as a Pharmacist Consultant in 2021 helping clients design sterile compounding facilities and start up, prepare for board inspections, develop SOPs to meet USP standards, and PCAB accreditation.