Clinic Contact


Rejuvenation Medical is dedicated to providing primary care services to patients in a welcoming and personalized environment. The clinic strives to recapture the values of medicine from the past, prioritizing the patient’s individual needs and health concerns.

At Rejuvenation Medical, the healthcare team is committed to providing compassionate care and support to all patients. The clinic accepts most major insurance plans and Medicare, and offers transparent cash pricing for patients without insurance coverage.

While Rejuvenation Medical operates as a modern healthcare facility, the clinic believes in treating patients as individuals, getting to know them personally, and providing continuity of care. By limiting the number of patients they accept, the clinic is able to prioritize quality of care and ensure that each patient receives the time and attention they need.

Whether a patient needs preventative care, chronic disease management, mental health services, or Post-Acute Care, Rejuvenation Medical is committed to providing the highest level of care possible. Patients can rest assured that they will receive compassionate, patient-centered care from a team of dedicated healthcare professionals.

Rejuvenation Medical Office

Meet our team

Joshua B. Kretchmar
DO, PhD, Physician and Medical Director

Dr. Kretchmar’s interest and belief in the whole patient extends beyond the boundaries of Rejuvenation Medical. He keeps active and trained in both Family and Emergency medicine and volunteers in underserved/rural areas and disasters worldwide. He believes all people, everywhere, have a right to medical care. 

dr kretchmar
Meridith Hallowell - ARNP, Clinician

Meridith Hallowell
ARNP, Clinician

Meridith is an experienced clinician specializing in Post Acute/Skilled Nursing Home care. With over 10 years of experience, Meridith has developed a deep understanding of the unique medical needs of patients in these settings. She is committed to providing compassionate and personalized care to every patient under her supervision, working closely with other healthcare professionals to ensure the best possible outcomes. Meridith’s expertise in Post Acute/Skilled Nursing Home care makes her an invaluable member of the healthcare team at Rejuvenation Medical.. 

Mario Mata
ARNP, Clinician

Mario is a highly specialized Geriatric Advanced Registered Nurse Practitioner (ARNP) with expertise in both clinical and post-acute care settings. He possesses a deep sense of compassion for his patients and works seamlessly with his colleagues as a team player. In addition to his patient care responsibilities, he also dedicates his time to developing and enhancing scheduling and process improvement initiatives to ensure efficient healthcare delivery.

mario mata
Leah Belo - Front Office Manager

Leah Belo
Front Office Manager and Scheduling

Leah is our wonderful office manager.  She schedules all patient appointments, manages referrals, ensures documentation is correct and timely submitted, and is your first go-to, when you have questions or needs.  She also manages Dr. Kretchmar, which is a job in itself.  

Jong Oh
Psychiatric ARNP

Jong is a Doctor of Nursing Practice and a Board Certified Psychiatric Nurse Practitioner with a strong proficiency in conducting comprehensive psychiatric evaluations, diagnosing mental health disorders, and developing individualized care plans. In the post-acute care environment, he specializes in managing psychiatric medication, monitoring patient progress, and maintaining stability for his patients.

jong oh
yoshino office manager

Yoshino Matsushima
Back Office Manager

Yoshino does everything that needs to be done to keep the lights on and the office running.  And when Leah needs a break from managing Dr. Kretchmar, she steps in.  

Rene Gallegos

Billing Issue?  Rene will fix it with a smile.  We would be lost without her.  

Rene Gallegos



    Dr. Kretchmar is great! He takes the time to listen and thoroughly understand your situation. He also does a great job of helping you understand all of the options available to you (from traditional medicinal options to alternative healing methods). I recommend him any time!

    Carl M. / Testimonial from

    I have seen a lot of doctors over the years and Dr. Kretchmar is by far my favorite!! He cuts the crap and tells you like it is. He is so friendly and truly cares about your wellbeing. He isn’t afraid to ask the side effects questions which makes me feel less uncomfortable about them.

    I also appreciate that he doesn’t push drugs like a lot of doctors do now. He give you options and allows you to decide which of the paths will be right for you. Plus as a bonus, I now don’t dread going to the doctor!! He makes each visit welcoming and inviting.

    Chloe M. / Testimonial from