Dr. Leonard Joseph Brennan
Dr. Leonard J. Brennan
Last updated: Nov 5, 2007

Dr. Leonard J. Brennan

  • Gender: Male
  • Sole propriator: Yes
  • NPI: 1588844724

Dr. Leonard J. Brennan DMD

Dentist

He is located at 1250 Congress Street in Portland, ME 04102. Can help patients with the following: Bleeding Gums, Cosmetic Dentistry, Dental Crowns and Caps, Dentin Hypersensitivity, Oral Cancer Examination, Teeth Grinding. His National Provider Identifier (NPI) number is 1588844724. Appointment can be made via the phone number (207) 773-2446.

Conditions treated

Dr. Leonard Joseph Brennan, being an dentist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Leonard J. Brennan.

  • Bleeding Gums
  • Cosmetic Dentistry
  • Dental Bridges
  • Dental Crowns and Caps
  • Dental Emergency
  • Dental Exam and Cleaning
  • Dental Implants
  • Dental Malocclusion
  • Dentin Hypersensitivity
  • Dentures
  • Gum Disease / Gingivitis
  • Invisalign
  • Laser
  • Oral Cancer Examination
  • Pericoronitis
  • Teeth Grinding
  • Teeth Whitening
  • Veneers

Medicare Enrollment

Dr. Leonard J. Brennan is enrolled to bill Medicare as a Order And Referring Only - Dentist (also registered under: Practitioner - Dentist) .

Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.

Payments received

Drug payment

Nobel Biocare $43

Other

Food and Beverage $44

Looking for more Dentists?

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Dr. George David Gordon
  • Gender: Male
  • Address: 612 Brighton Avenue Portland, 4102, ME
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Dr. Alex Kerbaugh
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Dr. Frederick R. Molander
  • Gender: Male
  • Address: 1250 Congress Street Portland, 4102, ME
Dr. Pardis Koleini
  • Gender: Female
  • Address: 22 Bramhall Street Portland, 4102, ME
Dr. Joseph F. Mangone
  • Gender: Male
  • Address: 1330 Congress Street Portland, 4102, ME
Dr. Gregory D. Frost
  • Gender: Male
  • Address: 190 Park Avenue Portland, 4102, ME
Dr. Charles Anthony Iselborn
  • Gender: Male
  • Address: 149 Brighton Avenue Portland, 4102, ME
Dr. Clifton Arthur Hodges
  • Gender: Male
  • Address: 612 Brighton Avenue Portland, 4102, ME
Dr. Russell J. Collett
  • Gender: Male
  • Address: 1601 Congress Street Portland, 4102, ME

Questions & Answers

Does Dr. Leonard Joseph Brennan accept insurance?

Unfortunately we don't have any information if Dr. Leonard Joseph Brennan accepts insurance.

Where can you meet with Dr. Leonard Joseph Brennan?

Dr. Leonard Joseph Brennan's office is located at 1250 Congress Street in Portland, ME 04102.

What conditions does Dr. Leonard Joseph Brennan treat?

Dr. Leonard Joseph Brennan provides treatment for Bleeding Gums, Cosmetic Dentistry, Dental Crowns and Caps, Dentin Hypersensitivity, Oral Cancer Examination, Teeth Grinding. For the full list see this list.