Jonathan Lax Treatment Center

Jonathan Lax Treatment Center

Located in the heart of Center City Philadelphia, the Jonathan Lax Treatment Center provides state-of-the-art HIV primary care, regardless of the patient’s insurance status or ability to pay.

State-of-the-art, Client-Centered Treatment

Our team offers culturally competent, integrated, patient-centered medical care, and social services. We strive to combat social injustice by addressing the unique needs and circumstances of each individual. The Lax Center strives to provide comprehensive care to all patients in a one-stop-shop setting.

Team Approach

A multidisciplinary team approach is essential to the comprehensive care that we provide. Our providers are assisted by an experienced team of physicians, nurses, physician assistants, nurse practitioners, pharmacists, social workers, adherence counselors, case managers, care outreach workers, and peer educators. We seek to provide a client-friendly environment where patients are full partners in the development and implementation of their treatment plan.

Comprehensive HIV Primary Care

We respect your dignity as an individual. When you come to the Lax Center you will be seen by a provider experienced in HIV care. Your total healthcare emphasizes monitoring of your HIV disease with close attention paid to the immune system. Our experienced providers will also help you manage your high blood pressure, diabetes, asthma, depression and any other problems where a primary care provider is needed. For example, we also offer screening for sexually transmitted diseases and tuberculosis, vaccinations, cholesterol monitoring, overall health monitoring such as pap smears and breast exams, and timely referrals to appropriate specialists.

The Lax Center houses two sub-clinics. The Hepatitis Clinic is a special program for those living with HIV and Hepatitis B and/or C. The MDR Clinic (multi-drug resistance) is for those who have exhausted first line treatment, and need assistance in finding alternatives. You do not have to be a Lax Center patient to access these sub-clinics. For more information, or to make an appointment, please call Julie Fort, nurse manager at 215-790-1788 ext. 117.

In almost all cases, no referral will be needed to see our providers. We accept Medicaid, Medicare, and numerous private insurances. We also see people who have no insurance, so do not hesitate to call us if you are in this position. We also have found that many people are not aware of their eligibility for Medicaid or other patient assistance programs and our Client Services department will help you fill out the appropriate paperwork to obtain health coverage.

We also have well established referral networks for numerous other social services such as legal aid, substance abuse treatment and detoxification programs, and housing and food assistance programs. We also have programs on site to help with behavioral health and substance abuse needs: The Diana Baldwin Clinic provides mental health services and works as part of the Lax Center Treatment Team. The TREE Intensive Outpatient Program is the only HIV-specific substance abuse program in Philadelphia that accepts Medicaid.  We welcome inquiries. There are Behavioral Health Consultants integrated in to all of our medical teams to help you address both your short term and long term health goals. Of course, as a patient at our center, you have to do your part. If you choose us as your provider, it is important that you keep your appointments, discuss your needs openly, and work with the members of our team in order for us to provide the best course of treatment for you.

Convenient Hours

Early morning and evening sessions are available. Everything possible is done to accommodate the needs of working adults in order to access care in a convenient and confidential manner.

We are open Monday through Friday 9 am to 5 pm with Tuesday hours extending to 6:00 pm. We close for lunch between 12-1pm daily.

The Lax Center allows same-day scheduling as well as walk-ins for sick visits, while those who are able to adhere to appointments are encouraged to do so.

If you are a patient of the Lax Center or Clinica Bienestar and have an urgent medical question that cannot wait until the next business day, you can reach our after-hours line by calling 215-790-1788.

A clinician (physician, nurse practitioner, or physician assistant) is available on call when the center is closed. Call our phone number 215-790-1788 to be connected.

Please call 215-790-1788 to make an appointment.

Laboratory Services

Blood work will be done on site by our experienced and friendly laboratory technician. Laboratory hours are Monday through Friday 9am – 3pm. The lab is open until 5pm on Tuesdays.

Rapid testing for HIV is available to partners of our clients; results are available in 20 minutes.

Access to Research

This is an extremely hopeful time in the development of new therapeutic options for HIV infection. The Jonathan Lax Treatment Center assures that all of our clients have access to cutting-edge research studies, which, combined with state-of-the-art care, allows access to best possible therapeutic interventions available. Please speak to your provider about a study that may be appropriate for you.

Pharmacy Services

There is more to HIV care than simply prescribing pills to be taken every day. The team of providers at the Jonathan Lax Treatment Center understands the complexities that people living with HIV face. A pharmacist specializing in HIV care assists our clients in understanding prescribed medications and their side effects. Our pharmacist and medication adherence team help clients to sets up their pill boxes, provides medication refills and preauthorization for various prescribed medications when needed.


The many education programs of Philadelphia FIGHT including the AIDS Library, Project TEACH, and the Critical Path Internet Project are also available to you. Please use this website for more information on these programs. In the early years of the AIDS epidemic many lost their friends and significant others to the deadly virus. However, by the mid 1990s powerful new medications became available and the era of HAART (Highly Active Antiretroviral Therapy) had began. While there is still no cure, HIV is a manageable disease with many medications available to treat it. The Lax Center integrates our wide variety of services to assist you to live a fulfilling, normal life.

Spotlight On

Karam Mounzer, MD

Dr. Mounzer identified two major gaps in the care of patients with HIV/hepatitis C (HCV) co-infection, and the complexity of multidrug-resistant HIV treatment. He is involved with many clinical trials focusing on drug development and better understanding of HIV immunopathogenesis with the Wistar Institute. He is involved in teaching and mentoring fellows, residents and students.

Learn More about Spotlight On
Dr. Karam Mounzer

Dr. Mario Cruz

Dr. Cruz is a board certified pediatrician who joins Philadelphia FIGHT as the Medical Director for our Pediatrics and Adolescent Health Center. He completed his undergraduate training in Biology and Psychology from Union College, his medical school training at Albany Medical College, his residency training at St. Christopher’s Hospital for Children, and his Chief Residency at the Albert Einstein Medical Center