Quickly book an Adult
Primary Care visit online
Skip to main content
Hoag Medical Group - home link
  • Find A Doctor
  • Locations
  • Patient Resources
  • Home
  • >
  • Physician Directory
  • >
  • Pulmonary
  • >
  • Thomas J. Diamant, MD
Back to Search Results
Thomas J. Diamant, MD

Thomas J. Diamant, MD

Pulmonary
Accepting new patients
Language
  • English
Affiliation
  • Hoag Physician Partners
Board Certification
  • American Board of Internal Medicine - Pulmonary Disease
  • American Board of Internal Medicine - Internal Medicine
Insurance
  • Aetna
  • Anthem
  • Blue Shield
  • Cigna
  • Scan
  • United Healthcare

Insurance accepted byThomas J. Diamant, MD

HMO Plans

  • Aetna
  • Aetna Value Network
  • Anthem Blue Cross of California
  • Anthem Priority Select HMO
  • Blue Shield of California
  • Blue Shield TRIO
  • Cigna
  • Cigna Select
  • United Healthcare

Medicare Advantage Plans

  • Aetna PPO Advantage
  • Anthem Blue Cross of California
  • Aetna Medicare Select HMO
  • Aetna Medicare Value HMO
  • Anthem Medicare HMO
  • Blue Shield of California
  • Blue Shield 65 Plus HMO
  • Blue Shield 65 Plus Plan 2
  • Blue Shield Total Dual Plan
  • Blue Shield Coordinated Choice Plan
  • Blue Shield Advantage Optimum Plan
  • Blue Shield Vital HMO
  • Blue Shield Inspire
  • SCAN
  • Scan Classic HMO
  • United Healthcare
  • United Healthcare AARP Medicare Complete Secure Horizons Premier/Essential
  • United Healthcare AARP Medicare Advantage Secure Horizons Focus Plan
  • United Healthcare AARP Medicare Advantage Patriot
  • United Healthcare Group Medicare Advantage
  • United Heatlhcare Medicare Advantage Assure

PPO Plans

  • Aetna
  • Anthem Blue Cross of California
  • Beech Street
  • Blue Shield of California
  • Cigna
  • Coventry
  • Multi Plan
  • Private Health Care Systems
  • TRICARE, Managed by Healthnet

Medicare PPO Plans

  • Aetna Medicare PPO
  • Alignment Health PPO Powered by Hoag
  • Anthem Medicare PPO
  • Blue Shield Medicare PPO
  • United Healthcare Medicare PPO

Covered California

  • Blue Shield HMO TRIO and PPO Bronze, Silver, Gold and Platinum plans
Loading...:

About Thomas J. Diamant, MD

Raised in Montreal, Dr. Diamant studied at McGill University in the Accelerated Pre-Medical Program, during which time he was recognized each year by the Faculty of Medicine as a McGill University Scholar.

He began his Internship training in Straight Medicine at Toronto General Hospital and continued his training as a Resident in Internal Medicine at St. Mary Medical Center, Long Beach. In 1984, Dr. Diamant completed his Fellowship in Respiratory Physiology and Medicine at Harbor-UCLA Medical Center in Torrance. He received Board Certification in Internal Medicine in 1984, in Pulmonary Medicine in 1988, and in Critical Care Medicine in 1991.

Apart from his clinical research, Dr. Diamant served as Medical Director in the Pulmonary Rehabilitation Program and as Medical Director in the Sleep Abnormalities Laboratory at St. Mary Medical Center, Long Beach. He has served as Chairman of the Division of Pulmonary Medicine at Hoag Hospital as well as Chairman of the Department of Internal Medicine. Dr. Diamant holds an appointment as the Medical Director of the Hoag Hospital Department of Respiratory Care and is a Fellow of the College of Chest Physicians.

Dr. Diamant enjoys cycling in his spare moments and spending time with his family.

Featured Article
Achoo! It’s that time again … allergy season.
by Christine M. Panganiban, MD
View All Articles
Sign-Up
for Our Newsletter
Medicare Classes

Join us for an Upcoming Class
We know that Medicare can be confusing and that’s why we offer live stream Medicare Classes. View our live stream Medicare Class schedule.

View Medicare Classes on Hoag.org
Hoag Medical Group - home link
  • Request a Refill 949-688-2775
  • Pay a Bill 844-840-2139
  • Referral Status 949-688-2774
  • Find a Doctor 855-450-4464
  • Nurse Advice Line 949-688-2773
  • About Us
  • Awards and Accreditations
  • Careers
  • Legal
  • Request a Refill 949-688-2775
  • Pay a Bill 844-840-2139
  • Referral Status 949-688-2774
  • Find a Doctor 855-450-4464
  • Nurse Advice Line 949-688-2773

Signup for Our Newsletter