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Dr. John Brennan, MD – Exeter, NH | Pulmonology - Doximity logo

Dr. John Brennan, MD – Exeter, NH | Pulmonology - Doximity

Pulmonary MedicineExeter, NH

★★★★★5.0/52 reviews across 1 platforms

Ratings by platform

  • WebMD Care: 5 out of 5 (2)

What patients say

Patients praise

  • Some patients report positive experiences and attentive care
  • Appreciation for thoroughness in diagnostic efforts

Common complaints

  • Lack of communication and follow-up on test results
  • Poor handling of appointment scheduling/cancellations
  • Perceived lack of attentiveness during appointments

In patients' words

"No communication, zero follow up. I saw Dr. John Brennan and was transitioning to a new medication. Had tests run - never got the results despite calling to request them. Had an adverse reaction to the new medication and had to go to the ER, made Dr. Brennan aware and they never followed up with me. Incredibly poor service and care."

LocalityBiz (User Review)

"I went to see Dr. Brennan with a peculiar case of persistent fevers which didn't turn out to be related to lungs. However, he went above and beyond trying ..."

Vitals (User Review)

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 11, 2026 — sources: [1][2][3][4][5][6][7].

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