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About

Summary: CHA Occupational Health at Cambridge Health Alliance is part of the nonprofit CHA healthcare system serving Cambridge, Somerville, and Boston’s metro-north communities. It offers occupational health services alongside CHA’s broader care, including primary and specialty care, emergency, mental health, and women’s health. CHA operates two acute care hospitals and maintains affiliations with Beth Israel Deaconess Medical Center, Tufts University School of Medicine, and Harvard Medical School. Main locations include 1493 Cambridge Street (HQ) in Cambridge, MA, and other CHA sites in Somerville, Everett, and Cambridge. If you’re seeking occupational health services specifically at CHA, contact the Cambridge Health Alliance locations to confirm onsite occupational health offerings, hours, and appointment options.

Clinic Type

Occupational Medicine

Address

1 Cabot Rd, 2nd Floor, Medford, MA 02155

Phone

617-591-4660

Email

webmaster@challiance.org

Opening Hours

Monday - Friday 8:30 am - 5 pm

Services Offered

  • DOT Physical Exams
  • Immigration Exams
  • Travel Medicine Clinic
  • Medical Clinics, Flu Clinics and More
  • Ergonomic Assessments
  • Pre-Employment Services and Exams
  • Screenings
  • Workplace Injuries - Urgent Care and Treatment (including chemical and toxic exposures)
  • X-rays
  • Yellow Fever Vaccinations
  • Disability Management
  • Orthopedic Consults
  • Physical and Occupational Therapy
  • FAA Pilot Exams
  • Clinical supervision for on-site Employee Health services
  • Consultation services
  • Evaluations for chemical and bio-hazard exposures
  • Program development for Vivarium and research staff
  • Support for Institutional Biosafety Committees (IBCs) and attendance at meetings
  • Development of pre-hire medical surveillance screening programs for employees and on-site vendors
  • Collaboration with Environmental Health and Safety agencies
  • Disability Management interface with managers and supervisors to facilitate appropriate return to work

Team

  • Stefanos Kales, MD, MPH, FACP, FACOEM — Chief of Occupational and Environmental Medicine
  • Dr. Russell Tontz, Board-certified in Occupational Medicine, Aerospace Medicine and Family Medicine — Physician

Insurance & Payment

Languages Spoken

  • English

FAQs

What are the clinic hours?

Monday - Friday 8:30 am - 5 pm.

What services are offered at CHA Occupational Health?

Disability Management, DOT Physical Exams, Ergonomic Assessments, FAA Pilot Exams Immigration Exams, Medical Clinics, Flu Clinics and More, Orthopedic Consults, Physical and Occupational Therapy, Pre-Employment Services and Exams, Screenings, Travel Medicine Clinic, Workplace Injuries - Urgent Care and Treatment (including chemical and toxic exposures), X-rays, Yellow Fever Vaccinations.

Where is CHA One Cabot Care Center located?

1 Cabot Rd 2nd Floor Medford, MA 02155.

Awards & Accreditations

  • 2024 Excellence in Mentoring Award from the American College of Occupational and Environmental Medicine

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Google (via Aging in Place New England): 3.8 out of 5 stars (based on 4 reviews) (4 reviews (limited dataset))
  • Yelp: 1.9 out of 5 stars (for the broader CHA system) (80 reviews (for the broader CHA system))

Patients praise

  • friendly and calm nursing staff
  • clear explanations of medical procedures
  • professional and intelligent physicians

Common complaints

  • long wait times
  • general negative feedback for the broader Cambridge Health Alliance system (not specific to Occupational Health)

"They was so nice and calm all the nurses explained everything very well and clearly, thank you for the amazing job!"

LocalityBiz review for CHA Occupational Health Program

"Dr. Zacks is an exceptional doctor. She is intelligent, well-educated, and friendly to her patient. I would 100% recommend her."

LocalityBiz review for CHA Occupational Health Program

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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