Our Staff


Joseph Castranova III


Mr. Castranova has over 18 years experience in the Credentialing, Billing and Electronic Health Records industry. He currently sits as Chairman of the Board of the Florida Medical Billing and EHR Association (a non for profit organization), He sits on the Advisory Council of Miami Dade College school of Medical Science and He has been on the National Leadership Counsel with the US Congress since 1995. He has been awarded the lifetime achievement award within the medical financial industry by Donald Trump’s Who’s Who. He has won the Honorary Chairman Award by the United States Congress for 2005, 2006 and 2007. He has been asked to speak at numerous government conventions as well as Television shows and he has been on the cover of the Wall street Journal three times for his dedication and in debt knowledge of our healthcare system. Mr. Castranova relates and understands that we all must give back to our communities that have supported us; this is why he donates all his billing and EHR services his company provides to the Miami Dade Rescue Mission and all Broward Outreach Centers. Mr. Castranova has built MedXperts Revenue Cycle Management, LLC, On the foundation of honesty, integrity and top notch customer service and satisfaction. He has over 3,000 followers on LinkedIn and over 1000 endorsements by his fellow peers. We say what we do, and do what we say!


Allan W. German

Vice President

Allan W. German serves as Vice President of MedXperts RCM Inc. a privately held Florida based corporation headquartered in the city of Doral. Allan has served as Executive Vice President of Solaris LLC a custom software developer specializing in document imaging and management software for the healthcare industry. Prior to that he was Executive Vice President of sales and marketing for Digital Records Inc. a Florida based company that marketed scanning and digitization services to the medical industry. Allan has previously served on the technology committee for The South Florida Hospital and Healthcare Network.

Allan’s interest in the healthcare industry was proceeded by his award winning 30 year career in sales and marketing in the field of technology. Allan was the Director of sales for The Digital Library Systems Group a wholly owned subsidiary of Image Access Inc. where he was responsible for creating a brand name for digitization software developed specifically for University and College Libraries. Among his clients were Harvard, Princeton, MIT, Notre Dame and Michigan State Universities. Allan has been recognized by The National Directory of Who’s Who and The Lexington Who’s Who for Executives and Professionals.


David William Cabrera, M.D.

Vice President of Operations

Dr. Cabrera joined our company in July of 2007. As a medical doctor and an owner of a large Internal Medicine, Family Practice and Dermatology center in South Florida for 25 years. He brings to our company an array of vast clinical knowledge. Dr. Cabrera is very highly skilled in medical notes as well as MRA scoring and HETIS scoring. He leads our implementation team and our special procedure and reimbursement team. He trains our client’s practices on new procedures that are reimbursable and the charting of notes to improve their MRA and HETIS scores with all HMOs. He also leads our implementation team in the customization of our EHR system.

jeffrey_stoneJeffrey Stone


Jeffrey Stone serves as our Chief Operations Officer at MedXperts, RCM, Inc.. Mr. Stone has over 20 years of direct End to End Revenue Cycle Management experience. He currently holds many certifications including ICD-10-CM Certification from the AAPC. Mr. Stone received his Bachelor’s in Business Degree from Monmouth College in New Jersey in 1974. Mr. Stone has been an independent revenue cycle consultant since 1998. He comes to us from FIU Health where he was the Director of Revenue Cycle Services where he was responsible for developing revenue cycle, negotiating contracts for outsourced billing, auditing physician documentation and coding and maintaining metrics. His specialties include Pediatrics, behavioral health, family medicine, internal medicine, cardiology, OB-GYN, Rheumatology, endocrinology, pain management and radiology. He was also the Director of Professional Billing at Children’s Hospital of Philadelphia and Children’s Hospital of LA. He was also Manager of Billing Operations for over 5 years at Per-Se Technologies (Now McKesson) and Office Manager of The Rothman Institute (Orthopedic Surgeons) as well as being Director of RCM at Tenet Healthcare and was Director of Billing and Collections at Pediatric Management Group (PMG) which is one of the largest multi-specialty groups in the United States with 400 physicians, 33 specialties including surgery, plastic surgery, cardiology, ICU, critical care, anesthesiology, oncology and orthopedics catering to children.

Mr. Stone leads our entire Revenue Cycle Department. He is our clients go to professional for all their needs. He leads our team of over 50 Billing Agents and 25 Collection Agents in un-surpassed end to end revenue cycle management as well as tracking our clients HMO, HETIS and MRA scoring. We are proud and honored to have Jeffrey Stone as a member of our family and management team.

image012Michael Kesti

Director of Client Relations

Mr. Kesti joined MedXperts in December of 2011. Mr. Kesti has been heavily involved with the healthcare care industry for over 20 years. He is currently a Medical Lobbyist as well as the consultant to University of Miami medical school and runs a very successful business in government relations. Mr. Kesti is responsible for clients support, contract support and any and all public relations issues.

maikelMaikel Mitchel, BSN

Medical Coding Manager

Mr. Mitchel has been with MedXperts since 2004. He is a master in Medical Billing and Coding and has over 10 years experience in doing so. He has numerous years of coding specialties from Cardiac Surgery to ENT surgery as well as infectious disease and Pediatrics and IDTF. He is known throughout our industry as being the go to person on research of denied codes and claims. Mr. Mitchel has received his Bachelors of Nursing degree from Chamberlain College of Nursing and is presently seeking his masters in Nursing at Chamberlin. He is the Honor student and consistently on the Dean’s list. Mr. Mitchel is a huge asset to our organization and plans to stay with us after he receives his Masters in Nursing as our Director of Medical Auditing.

patricia_greenPatricia C. Green


Mrs. Green has been in the accounting and finance industry since 1969. Mrs. Green leads our accounting department and is in charge of all our A/R and A/P at MedXperts.

juan_reneJuan Rene Rodriguez-Pulido

Collections Department Supervisor

Mr. Pulido has been with MedXperts for over three years and he supervises our collections staff in consistently working our clients aging on a daily basis. Mr. Pulido is currently working on obtaining his CPC certification.

image016Terri Garren

Billing Supervisor

Ms. Garren has been with MedXperts since 2006. She is our supervisor of our Pediatrics billing division. Ms. Garren has over 8 years experience in billing Pediatric specific claims. She leads our North Carolina office on all claims, coding and operations.

yazminYazmin Matos

CPC, Pediatrics Billing Agent/Supervisor

Mrs. Matos comes to us from Avisena where she was a medical biller and coder for over 8 years. She specializes in Pediatrics and Family Medicine coding and billing.

alejandroAlejandro Espinosa

CPC. Billing Supervisor

Mr. Espinosa was previously an independent billing agent with over 13 years’ experience in PT, OT, Chiropractic, Internal Medicine, Radiology and IDTF billing and coding.