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Clinic Type

Pulmonology

Address

Cummings Park, 345 Washington Street, Unit 15, Woburn, MA 01801

Phone

781-756-4070

Email

BILHDigitalHealth@BILH.org

Opening Hours

Sunday: Closed; Monday–Friday: 8:00 am – 5:00 pm; Saturday: Closed

Services Offered

  • Comprehensive Pulmonary and Sleep Care
  • Pulmonary Medicine
  • Sleep Medicine
  • Pulmonary & Critical Care Medicine

Team

  • Denis Y Lin, MD, Pulmonary & Critical Care Medicine — Pulmonary & Critical Care Medicine; Pulmonary Medicine
  • Najmuddin S Patwa, MD, Sleep Medicine — Pulmonary Medicine; Sleep Medicine
  • Sarah Petteys, MD, Pulmonary Medicine — Pulmonary & Critical Care Medicine
  • Kelsey E. Darmstatter, NP, Nurse Practitioner — Pulmonary Medicine

Insurance & Payment

Languages Spoken

FAQs

What are the hours of operation?

Sunday Closed; Monday–Friday 8:00 am – 5:00 pm; Saturday Closed.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • WebMD (Dr. Najmuddin Patwa): 4.0/5 (33 ratings)
  • Vitals (Dr. Najmuddin Patwa): 3.8/5 (31 ratings)
  • US News (Dr. Najmuddin Patwa): 4/5 (very positive category shown); patient experience overall shown as 4/5 (59 reviews total)
  • WebMD (Dr. Denis Lin): Not clearly stated in provided snippet (Not clearly stated in provided snippet)

Patients praise

  • Helpful explanations and thorough communication (patients report being glad they were assigned to the doctor, and that the doctor explains things thoroughly)
  • Timely return calls / responsive follow-up (one review contrasts another pulmonologist’s lack of return call)
  • Perceived clinical effectiveness (e.g., strong inhaler controlling asthma quickly; also “kind and caring doctor” sentiments)

Common complaints

  • Perceived lack of proper care / failure to follow through (including concerns about not ordering oxygen after a sleep study)
  • Long wait times for coordination/testing and delays in receiving follow-up (e.g., months for secretary to provide follow-up)
  • Concerns about decisions not aligning with patient need (e.g., imaging ordered or not, being told insurance covers vs symptoms)

"“Did not give me proper care. Did not follow through. Left me hanging when I needed oxygen via the sleep study… He Did not even order the oxygen.”"

Vitals review excerpt for Dr. Najmuddin S. Patwa

"“Dr Lin is one of the best doctors I have ever had. Explains everything thoroughly.”"

WebMD review excerpt for Dr. Denis Lin

"“If you need to call they return call in timely manner.”"

WebMD review excerpt for Dr. Denis Lin

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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