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Marys Center – Adelphi Clinic
STD/STI testing location in Adelphi, Maryland.
Verify with the clinic before visiting. Hours, services, fees and appointment rules change. Call ahead to confirm. This directory is for information only and is not medical advice. In an emergency, call 911.
Address: 8908 Riggs Rd, Adelphi, MD 20783
Get directions
Phone: (844) 796-2797
Website: https://www.maryscenter.org/contact-and-locations/adelphi-md/
Tests listed
- Chlamydia Test
- Conventional HIV Test
- Gonorrhea Test
- Herpes Test
- Syphilis Test
- TB Test
Cost and payment
Medicaid Accepted, Sliding Scale, Medicare Accepted, Fee, Insurance Accepted, Free STI Test.
This location lists free STI and/or HIV testing. Eligibility rules may apply.
Hours
| Monday | 9:00am – 5:00pm |
| Tuesday | 9:00am – 5:00pm |
| Wednesday | 9:00am – 5:00pm |
| Thursday | 9:00am – 5:00pm |
| Friday | 9:00am – 5:00pm |
Appointment required: Yes
Other services
STI treatment, PrEP (HIV prevention medicine).
Languages: English, Spanish
Type: Federally Qualified Health Center (FQHC)
Source: CDC NPIN listing. Last updated by source: 2026-09-17. Page built 2026-11-03.