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Dr. Tilles's Overview

Dr. Dan S. Tilles graduated from the Rosalind Franklin University/ Chicago Medical School in 1977. He works in Concord, MA and specializes in Internal Medicine. Dr. Tilles is affiliated with Emerson Hospital and Lahey Medical Center.

Dr. Tilles's Experience

Years in Practice: 38

Dr. Tilles's Specialties

Internal Medicine

Dr. Tilles's Education & Training

Medical School: Rosalind Franklin University/ Chicago Medical School; Graduated 1977

Dr. Tilles's Rating

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Overall Rating


  • Explains conditions & treatments
  • Takes time to answer my questions
  • Provides follow-up as needed
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Dr. Tilles's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO
  • BCBS MA Blue Care Elect PPO
  • BCBS MA HMO Blue with Managed Care Behavioral Health
  • BCBS MA Preferred Blue PPO
  • CIGNA LocalPlus
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Dr. Tilles's Office Information & Appointments

Office Locations

Harvard Vanguard Medical Associates
Harvard Vanguard Medical Associates Internal Medicine

330 Baker Ave
Concord, MA 01742
(978) 287-9350


Office Hours and Information

Fax: (978) 287-9358

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 8:30 AM - 4:30 PM
Tuesday 8:30 AM - 4:30 PM
Wednesday 8:30 AM - 4:30 PM
Thursday 8:30 AM - 4:30 PM
Friday 8:30 AM - 4:30 PM
Saturday 8:30 AM - 1:00 PM
Sunday 8:00 AM - 5:00 PM

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Dr. Tilles's Hospital Affiliations

Office Locations

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