Sexually Transmitted Disease (STD) Unit

The Massachusetts General Hospital Sexually Transmitted Disease (STD) Unit provides screening and treatment of sexually transmitted infections.

Call for additional information: 617-726-2748


For more than 60 years, the Sexually Transmitted Disease (STD) Unit at Massachusetts General Hospital has provided screening and treatment of sexually transmitted infections. Services are provided in a confidential setting by a professional staff trained in the area of sexually transmitted infections. Insurance is not required and everyone is welcome.

The STD/GID Unit offers the following services:

  • Evaluation and treatment for sexually transmitted infection including: chlamydia, gonorrhea, syphilis, genital herpes infections (HSV), genital warts - Human papilloma virus (HPV), molluscum, scabies and vaginitis
  • Testing for the human immunodeficiency virus infection (HIV). Rapid HIV testing is available
  • Counseling on prevention of HIV infection
  • Testing for Hepatitis C
  • Information and literature regarding sexually transmitted infections and safer sex practices

For your convenience, walk-in hours and appointment hours are available at both our main campus and Chelsea Health Center locations.

Related Conditions

Locations & Hours

Sexually Transmitted Disease (STD) Unit at Massachusetts General Hospital

MGH Cox Building, 5th Floor
55 Fruit Street
Boston, MA 02114
Phone: 617-726-3236

Walk-in hours:
Tuesday, Thursday and Friday, 8:30 am-11:00 am
Wednesday, 1:00 pm- 3:00 pm

Appointment times:
Monday, 11:00 am-3:30 pm
Wednesday, 8:30 am-11:00 am

The clinic at the MGH main campus will be closed Independence day 7/4, Thanksgiving and day after, Christmas Day 12/25; and New Year’s Day 1/1. 

Genitourinary Infectious Disease (STD/GID) Unit at Chelsea Health Center

151 Everett Avenue
Chelsea, MA 02150

Walk-in hours:
Tuesday, 1:30 pm-3:30 pm
Thursday, 3:00 pm-6:00 pm

Please call 866-211-6588 to register with the hospital before calling to make an appointment. The STD/GID Unit is closed on weekends and holidays*.

* The STD/GID unit is in the process of hiring a new Nurse Practitioner for our staff.    During the hiring process we are modifying our schedule to better serve you.

The STD/GID unit will be “closed” for the following sessions:  

  • Tuesday, August 30:  Tuesday AM- MGH Main Campus (MGH)  and Tuesday PM- Chelsea Health Center (CHC)
  • Wednesday, August 31: Wednesday AM- MGH and Wednesday PM -MGH
  • Tuesday September 6:  Tuesday AM-MGH and Tuesday PM - CHC.

Tuesday and Thursday morning sessions at the MGH main campus will be handled by appointment.  We will continue have walk in sessions at MGH on Wednesday afternoon and Friday morning and on Tuesday and Thursday afternoons at Chelsea Health Center.  We will update this posting as the schedule changes.

*The GID clinic at Chelsea will be closed Thanksgiving 11/26, day after 11/27 Christmas Eve 12/24, Christmas Day 12/25; New Year’s Eve 12/31 and New Year’s Day 1/1.

Call for additional information: 617-726-2748

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