Our Team

Board of Directors

Peggy Sanchez, Chair


Ava Phillips, Secretary


Jonathan Berends, Treasurer

VP Ambulatory Services, Pomona Valley Hospital Medical Center

Michael Nelson, Director

Executive VP, Pomona Valley Hospital Medical Center

Elvia Rivas, Director

Safety Representative, DAL Global Services (Delta)

Gwendolyn Keys, Director


James Alig, Director


Abigail Pascua, Vice-President


Michelle Donley, Director


Key Management Staff

david kadar parktree community

David M. Kadar, DDS

Chief Executive Officer

Dr. David Kadar is a dedicated healthcare professional with more than 15 years of experience ensuring the delivery of high quality services for families in California.  Dr. Kadar is a strong advocate for the unserved and underserved populations of our community.  His health care interests include:  ensuring equal access to health care services regardless of ability to pay and integration of primary care disciplines to ensure whole person quality care.

Dr. Kadar received his Bachelor’s Degree in Biology with honors at New York University’s College of Arts and Science in 1998.  He received his Doctor of Dental Surgery Degree with honors at New York University’s College of Dentistry in 2002.  In 2003, Dr. Kadar received his Certificate in Advanced Education in General Dentistry from the University of Southern California School of Dentistry.  After completion of his AEGD, he was in private practice in the Oxnard and West Hollywood areas.  Following a request from a friend to assist in provider coverage at a local non-profit dental clinic, Dr. Kadar realized that his passion was public health dentistry, and has since devoted his career to community health center settings.

Dr. Kadar’s path to serving as the CEO of Pomona Community Health Center dba ParkTree Community Health Center (PCHC) includes serving as ParkTree’s Chief Dental Officer from 2016 to 2019.  He has also served as the Dental Director at a Los Angeles based Federally Qualified Health Center.  Under his leadership, the oral health programs he led showed significant growth in both its scope of care and in the number of clients being treated.  He has garnered the trust and respect of staff, the Board of Directors, patients/families and the community that we serve. As a strong advocate for integration, Dr. Kadar’s methods are diffusing throughout the health center and ensure that our patients and their families are well served.

Dr. Kadar provides leadership to numerous community roundtables and has served as a Chair for the Community Clinic Association of Los Angeles County whose work includes reducing barriers and increasing access. He has also served as Co-Chair of the Dental Directors Peer Network of the California Primary Care Association and is an active member of the Oral Health Coalition of the Inland Empire.   He is a committee member of the Local Oral Health Plans of both Los Angeles and San Bernardino Counties, whose goal is to increase access to oral health services to the vulnerable and underserved.

As the CEO of PCHC, Dr. Kadar provides guidance and oversight to the Board of Directors and the Executive Management staff as it pertains to the HRSA Program Requirements. He works under the leadership of the Board of Directors, and implements the strategic plan created by them.  He is responsible for oversight of the 330e grant and as such provides leadership and guidance to all program requirements of the health center compliance manual. Emphasis is on: Needs Assessment, Required and Additional Services, Key Management Staff, Conflict of Interest, Quality Improvement/Assurance, Board Authority, Board Composition, and Budget.

Please click here to email David Kadar.


Enrique Melgoza

Chief Dental Officer

Dr. Melgoza received his Bachelor’s Degree in Biology at University of California Riverside (Riverside, CA) in 2001, his Associates of Science in Dental Hygiene at Taft College (Taft, CA) in 2008, and his Doctor of Dental Surgery Degree at The Ohio State University College of Dentistry (Columbus, OH) in 2016.

Dr. Melgoza joined Parktree Community Health Center (PCHC) in October of 2016 as a Staff Dentist where he quickly realized that he was a part of something special. He can proudly say he was part of the start of dental services here at PCHC as well. One of his primary goals as a professional is to be a community role model. Dr. Melgoza has a strong passion to serve the underserved and has shown this by committing fully to carry out Parktree’s Mission. One of the reasons he is so passionate about helping this community is because he knows he was once a part of it, especially being a first generation Mexican-American. Having been born and raised in nearby Riverside CA, with parents that were both from Michoacán Mexico, he fully understands and can relate to a vast majority of PCHC’s patients. One of his favorite things to do as a clinician is to share with patients where his family is from as he feels it helps breaking the ice and is also an opportunity to talk about something other than teeth to help patients overcome any type of preconceived dental fear. He loves making patients feel welcomed and also giving them a sense of belonging.

In January of 2020, Dr. Melgoza joined Parktree’s management team as the Chief Dental Officer. Dr. Melgoza plans on continuing to help grow a dental department that has already been successful. Dr. Melgoza has a vision, not only to continue to help the dental department thrive, but to bring new energy and ideas that can help elevate not only the dental department but the entire organization as a whole. Dr. Melgoza fully understands that being successful will not only depend on the support of the management team and staff, but most importantly depend on the surrounding communities that see PCHC as their medical home because he strongly feels that that is what truly makes the organization thrive. Dr. Melgoza looks forward to working with the surrounding community for many years to come!

As Chief Dental Officer, Dr. Melgoza in collaboration with other key management staff provides input on all health center program requirements. His leadership oversees the following program requirements: Required and Additional Health Services, Clinical Staffing, Coverage for Medical Emergencies During and After Hours, and Quality Improvement/Assurance.

Alfonso Aguilera pomona

Alfonso Aguilera

Chief Financial Officer

Since January 2014, Mr. Alfonso Aguilera has been serving as the Chief Financial Officer (CFO) of the Pomona Community Health Center (PCHC).  A graduate of the esteemed UCLA Anderson Graduate School of Management in 1992 with a Master of Business in Finance, Mr. Aguilera has more than 25 years of work experience in financial management.  His early career was as a financial analyst for leading Fortune 500 companies including McDonnell Douglas, IBM and ARCO.  His last position prior to coming on board at the Pomona Community Health Center was at his alma mater, UCLA. He served there for 11 years as the Assistant Director of Business Analysis and Performance Reporting.  Mr. Aguilera’s experience as a finance generalist (accounts receivable/payable, budgeting and reporting, payroll and general ledger management), financial forecasting, development of a $250 million capital funding campaign, and management of money market investment portfolio has given him a broad set of skills to assist the health center develop outstanding financial policies and procedures.

Since taking over the financial controls at PCHC, Mr. Aguilera has developed a successful budget model, created a revenue cycle department to ensure the timely filing of claims submissions, trained staff on the sliding fee discount program and serves as staff member to the Board of Director’s Finance Committee. He works diligently with the external audit firm and articulates the organization’s current financial position to the Board members in a manner that is consistent with their knowledge and skills. Mr. Aguilera works collaboratively with other members of the key management staff to review data to influence decision-making.

As Chief Financial Officer, Mr. Aguilera in collaboration with other key management staff provides input on all health center program requirements.  His leadership oversees the following program requirements: Contracts and SubAwards, Sliding Fee Discount Program, Financial Management and Accounting Systems, Billing and Collections, Budget and Program Data Reporting Systems.

Please click here to email Alfonso Aguilera.

Elvia Sanc pomona

Elvia Sanchez, MPH

Chief Operations Officer

Ms. Sanchez joined Parktree Community Health Center in June of 2016. She received her Master’s degree in Public Health from the Cal State Northridge. Her previous work experience work included serving as a Care Coordinator, Quality Improvement Coordinator, and Chronic Disease Program Manager at a community health center serving the Santa Clarita and San Fernando Valley areas. Elvia joined Pomona Community Health Center in May 2016 as the Director of Quality, Risk and Compliance. Her diverse background will assist the health center in a variety of ways including offering strategies for quality improvement, implementation of workflow efficiencies for patients with chronic diseases and care coordination for the appropriate management of abnormal findings.

Ms. Sanchez will play a key role in the implementation of the patient centered medical home.  Growing up without medical insurance, Elvia knows first-hand the challenges uninsured and underserved populations face.  She is passionate about serving those who need it most and will use her previous experience to improve patient care here at Parktree Community Health Center.  Since her arrival at PCHC, she has worked in collaboration with the Chief Medical Officer to develop a quality reporting mechanism, has developed and implemented quality teams (QTs) and has been instrumental in educating the staff on all issues related to quality improvement.

Misty Benson pomona

Misty Benson

Director of Revenue Cycle Operations

Misty has over 18 years’ experience in health care administration and revenue cycle management, including hospital based billing and private practice leadership. Prior experiences included Patient Accounts Director for a Colorado based Federally Qualified Health Center (FQHC) serving over 94,000 patients through 26 outpatient centers in Colorado’s Pikes Peak and East Central regions. Misty holds certification in revenue cycle representation from Health Financial Management Association, she obtained her undergrad in Health Care Administration from Grand Canyon University, and went on to pursue her Masters in Healthcare Administration from Colorado State University.

Ms. Benson joined the ParkTree Community Health Center (PCHC) as the Director of Revenue Cycle Operations in September of 2019. As such, Misty has the responsibility to oversee the implementation of all revenue cycle management including patient service revenue, analysis of patient account receivables balances and monthly aging reports, and monitor encounter data entry within the Enterprise Practice Management system. Misty directs her team of billers by always encouraging them to learn all aspects of the revenue process. In this capacity she mentors her team so that they find satisfaction in their positions and plan on having established tenures within PCHC.

In her role and in collaboration with other key management staff, she provides input on all health center program requirements.  Her leadership oversees the following program requirements: Billing and Collections, Sliding Fee Discount Program, and Program Monitoring and Data Reporting Systems.  Additionally, she works on various tables and data collection analysis for the preparation of the Uniform Data System (UDS) and the Office of Statewide Health Planning and Development (OSHPD).

juliet domiguez parktree community

Juliet Dominguez

Director of Risk Management & Compliance

Juliet Dominguez has had the opportunity to grow with the Parktree Community Health Center (PCHC) since joining the organization in January of 2014. A familiar face of the community, Juliet is an alumna of Pomona Catholic Girls High School, she previously volunteered at Pomona Valley Hospital Medical Center in the post-anesthesia care unit and labor, delivery, recovery, postpartum unit and currently serves on the Board of Directors for Project Sister Family Services. Juliet started her career in health care as a patient service representative with MedAssist at Yuma Regional Medical Center (YRMC) in Yuma, AZ and Aurora Behavioral Health System in Tempe, AZ. After several years in Arizona, Juliet was hired as a patient advocate/referral coordinator for PCHC.

Since joining PCHC, Juliet has become certified in Health Care Compliance, earned a graduate degree in Health Administration from Saint Joseph’s University, and has advanced through the organization to the position of Director of Risk Management and Compliance (effective July 2019). As the Director of Risk Management and Compliance, Juliet’s goal is to ensure a safe environment for patients and staff so that PCHC can continue to flourish and provide quality services to the community for years to come.

As the Director of Risk Management and Compliance in collaboration with other key management staff, Ms. Dominguez is responsible for the following Program Requirements:  Board Authority, Board Composition, Clinical Staffing, Conflict of Interest


Ofer Ho

Chief Information Officer

With twenty years of professional experience, Mr. Ho has spent the majority of his career working within the health care industry as an Information Technology (IT) expert.  With a Bachelor’s of Science degree in Business Studies with an emphasis on Computer Information Technology his expertise in transforming operational functions and systems design that have significantly improved efficiency, reduced cost, and increased revenue is exactly what ParkTree Community Health Center needs to lead its IT independence project.  From design to implementation, Mr. Ho has been at the forefront of every component.  Once this project neared completion, we were thrilled to give Ofer a full-time position at our health center.

Ofer served as the Chief Information Officer for Eisner Pediatric and Family Medical Center in Los Angeles from 2008-2015.  During his tenure at this Federally Qualified Health Center, he developed a five year IT Strategic plan to best position the organization for success. It is those skills and experience that makes him very well-suited for the ParkTree project.  It was at Eisner that he became an expert using, modifying and interfacing the NextGen™ system to fully optimize its potential.  It was there that he designed and built entire corporate network and communication system.  During his time at Eisner, he served as member of the Physician’s Advisory Council for HITEC-LA.

Ofer is building a strong IT infrastructure for ParkTree focusing on accessing quality data, increasing usage by staff at all levels, enhancing workflows with telehealth, patient portal and electronic health records and improving all telecommunications systems.

Our Provider Team

Farnoosh Arabian

Farnoosh Arabian, DNP

  • Medical Education: Doctor of Nursing Practice (DNP), Wayne State University, Detroit MI
  • Specialty area: Family Medicine
  • Location: Holt Medical (Pomona)
  • Languages Spoken: English, Farsi
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Greg Maler, DO

Family Practice

Medical Education: Western University of Health Sciences, College of Osteopathic Medicine of the Pacific, Pomona, California

Residency: Texas Institute for Graduate Medical Education and Research

Clinic: Holt Medical (Pomona)

Languages: English, Spanish

Jannelyn Panganiban

Jannelyn Panganiban, FNP

Family Practice

Medical Education: California State University Los Angeles
Location: Holt Medical (Pomona), Park (Pomona), Sultana (Ontario), Archibald (Ontario)
Language(s) Spoken: English


Kathlene Nguyen, FNP-C

Family Practice

Education: Azusa Pacific University – School of Nursing, Azusa, CA
Location: Sultana (Ontario)
Language(s) Spoken: English, Spanish (Medical)

Krystal De La Rosa resize

Krystal De La Rosa, MD


Medical Education: University of California, Davis Medical School, Davis, California

Residency: Pediatric Residency at Loma Linda University

Clinic: Holt Medical (Pomona), Sultana (Ontario)

Languages: English, Spanish


Ranjit Shenoy, MD

Internal Medicine and Pediatrics

Provides care to adults and children

Suzan Shakhshir

Suzan Shakhshir, FNP-C

Family Practice

Medical Education: Azusa Pacific University, Azusa, California
Location: Holt Medical (Pomona)
Language(s) Spoken: English, Spanish

Varin Vongvaravipatr, NP

Varin Vongvaravipatr, FNP

Family Practice

Medical Education: Charles Drew University, Los Angeles, California
Location: Archibald (Ontario), Sultana (Ontario)
Language(s) Spoken: English, Thai

Lorraine Walker parktree

Lorraine Walker, MD

Obstetrics and Gynecology, Board Certified

Medical Education: Howard University College of Medicine, Washington, D.C.
Residency: Howard University Hospital Systems
Location: Archibald (Ontario), Sultana (Ontario)
Language(s) spoken: English

Elaine Senaluck, DDS parktree

Elaine Senaluck, DDS

General Dentistry for Adults and Children

Dental Education: University of California, San Francisco, San Francisco, California
Residency: General Practice Residency at West Los Angeles VA Hospital
Location: Archibald (Ontario)
Language(s) Spoken: English, Vietnamese


Enrique Melgoza, DDS

General Dentistry for Adults and Children

Medical Education: The Ohio State University – College of Dentistry, Columbus, Ohio

Specialty: General Dentistry for Adults and Children

Location: Archibald (Ontario) and Sultana (Ontario)

Language(s) Spoken: English, Spanish


Marina Markova, DMD

General Dentistry for Adults and Children

Medical Education: Western University of Health Sciences, College of Dental Medicine, Pomona, California
Residency: Advanced Education in General Dentistry (AEGD) from NYU Langone Medical Center in San Diego, CA.
Location: Holt Dental (Pomona)
Language(s) Spoken: English, Bulgarian. Conversational in Spanish, Russian

Sheetal Ray, DMD

Sheetal Ray, DMD

General Dentistry for Adults and Children

Dental Education: Arizona School of Dental and Oral Health, Mesa Arizona
Master’s in Public Health, MPH
Location: Holt Dental (Pomona)
Language(s) Spoken: English, Dental Spanish

Thomas Nguyen

Thomas Nguyen, DDS

General Dentistry for Adults and Children

Dental Education: University of Southern California, Los Angeles, California
Residency: Rancho Los Amigos National Rehabilitation Center
Location: Holt Dental
Language(s) Spoken: English, Vietnamese


Charles Zamora, LCSW

Licensed Clinical Social Worker

Behavioral Health Counselor


Afshin Javaherian, DPM (Dr. Java)


  • Education: University of California, San Francisco
  • Residency: Cedars-Sinai Medical center, Los Angeles, CA
  • Language(s): Medical Spanish
  • Location(s): Holt (Pomona)
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