Center for Clinical Trials, LLC

Center Information

Isabelita V. Chua, B.S.
Administrator/Regulatory Coordinator
Center for Clinical Trials, LLC
16660 Paramount Boulevard, Suite #301
Paramount, CA 90723

Currently Enrolling Trials

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Therapeutic Areas

Cardiology/Vascular Diseases
Healthy Volunteers
Infections and Infectious Diseases
Internal Medicine
Obstetrics/Gynecology (Women’s Health)
Otolaryngology (Ear, Nose, Throat)
Pulmonary/Respiratory Diseases
Trauma (Emergency, Injury, Surgery)


Welcome to the Center for Clinical Trials, LLC, a center dedicated to clinical research full time. This is the result of over 20 years of collective experience in the fields of medicine and clinical trials. This unique combination gives the site the ability to effectively meet the needs of the sponsoring companies.

Center for Clinical Trials, LLC is in partnership with USTCEDRES (University of Santo Tomas Center for Drug Research, Evaluation and Studies), a large clinical trial site in Manila, Philippines.


Center for Clinical Trials, LLC staff have worked with the following pharmaceutical companies:

Abbott Laboratories, Alcon, Allergan, Astra-Zeneca, Bausch & Lomb, Bayer, Biocryst, Bio-technology, Bristol Myers Squibb, Glaxo-Smithkline, Merck, Pfizer, Proctor and Gamble, Roche, RWJohnson, Sankyo Pharm, Sanofi-Aventis, Sanofi-Pasteur, Schering-Plough, Tap Holdings, Hoechst Marion Roussel, Viropharma..... and various CROs' such as Covance, CTMS, DPClinical, I3 Research, Icon Clinical Research, MTRA, ORA, Paragon, Parexel, Phoenix, PPD, pHARMACO, PRA, Quintiles, RSI, and Topical Solution to name a few.

Our center does study phases II, III, and IV.


Center for Clinical Trials, LLC in Paramount boasts of a research facility within the hospital community, with a total footage of 2000 square feet solely dedicated to clinical research. The center has the support of the hospital and medical-office administrators in the medical community to send qualified subjects to the research center. At present, CCT alone has 2,000 patient database.

Our site is accessible from major thoroughfares. It is approximately 20 miles east of LAX airport, 10 miles east of Long Beach airport, and 30 miles north of John Wayne airport.


The center prides itself with board-certified/eligible specialists dedicated and experienced in medical research. There are 10 full-time experienced clinical research coordinators. Investigators and coordinators alike have very focused approach in conducting clinical trials, with adherence to Good Clinical Practice principles cognizant of the FDA guidelines. The personnel have published papers in popular scientific journals.

Eleuterio P. Delfin, Jr.M.D.
General Practice/Emergency Medicine

Jesse de Leon, M.D.

Liberation de Leon, M.D., F.A.A.P.

Gregory J. Szal, M.D.

Mildred Rey, M.D.,F.A.A.P.

Jesus Villanueva, M.D., A.B.I.M.
Internal Medicine

Jose Mari Elacion,M.D.
Family Practice

Ana R. Faitlowicz,M.D.

Allan M. Effron,M.D.,FACG


Catalina Villanueva, M.D.
Director of Clinical Operations

Jonnel R. Constantino, M.D.

Ma. Victoria Constantino, M.D., MRA
Medical Research Assistant

Pebbles Hollero, M.D., CRC
Clinical Research Coordinator

Rey S. Chua, B.S., CRC
Clinical Research Coordinator

Gloria D. Libunao, B.S., CRC

Cora D. Diocampo, B.S., LLB
Clinical Research Coordinator

Caroline Villanueva,B.S., CRC
Clinical Research Coordinator

Isa V. Chua, B.S., CRC
Administrator/Regulatory Coordinator

Domingo S. Caparas,Jr,M.D.
Medical Research Associate

Angelica Samarista-Giron,M.D.,BSN
Clinical Research Coordinator,Phil

Mark R. David,M.D.
Clinical Research Coordinator,Phil

Melody Espino,M.D.
Clinical Research Coordinator,Phil.


Conduct Research and clinical investigation during clinical trials pertaining to safety and effects of medications. No patient treatment involved. Review and analyze professional, scientific & medical journals regarding health issues and developments relevant to patient illness and history in order to recommend possible tests or procedures that may be relevant to diagnosis needed during clinical trials. Review laboratory results, recognize and monitor parameters that may be clinically significant, highlight and present results for further review and assessment. Participate in meeting and conferences held by pharmaceutical and other research companies before commencement of any research projects. Provide assistance to ensure protocol is followed throughout clinical study.

Doctor of Medicine or Life Sciences. No license required. 40 hours/week. Jobsite/Interview: Paramount, CA. Contact information: Mail resume to: Center for Clinical Trials, LLC. - 16660 Paramount Blvd., #301, Paramount, CA 90723. Attn: Director


Center for Clinical Trials,LLC is an independent research facility. It utilizes central IRB and central laboratory with access to reputable local laboratory and diagnostic centers. It has an access to a large computerized database of patients with varied ages, ethnicity, socioeconomic strata and medical conditions that ensure a stable source of patient population and guarantees to meet the minimum numbers of subjects as was proven in the past.

  • 40% Hispanics
  • 45% Caucasians
  • 15% Asians
  • 5% Others

Contact Center

If you are interested in contacting this center to discuss clinical trials, please complete and send the email form below. A representative from the research center will then follow up with you.