Thomas Joseph Diamant, MD

Pulmonary Disease Internal Medicine

Internal Medicine

Thomas Joseph Diamant is a Pulmonary Disease Internal Medicine specialist based in Costa Mesa, CA with over 47 years of clinical experience. Offers virtual telehealth visits.

(949) 873-5537Costa Mesa, CA
Telehealth Available
NPI Active per CMS — Q2 2026

Patients across CA can see Thomas Joseph Diamant, MD in person in Costa Mesa or via virtual visit — no travel required. With 47+ years of experience, he has been practicing in the Costa Mesa area. Among his Medicare patients, common conditions include hypertension, high cholesterol, and asthma (per CMS data).

1 of 493 Internal Medicine providers in CASee all Internal Medicine in Costa Mesa47+ years experienceNPI since 2006

Older · 655dNPPES updated 2024-08-06 · verify NPI on CMS · Verify license at Medical Board of California

Contact & Location

Practice Location

136 Broadway, Costa Mesa, CA 92627-2818

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Asthma.

Hypertension
75%

High blood pressure — a leading risk factor for heart disease and stroke

High Cholesterol
75%

Elevated cholesterol or triglycerides that increase heart disease risk

Asthma
60%

A condition causing airway inflammation, wheezing, and difficulty breathing

Arthritis
55%

Joint inflammation causing pain, swelling, and stiffness

COPD
50%

Chronic Obstructive Pulmonary Disease — a group of lung diseases that block airflow

Ischemic Heart Disease
46%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

Cancer
29%

Diseases involving abnormal cell growth with potential to spread to other body parts

Atrial Fibrillation
26%

An irregular, often rapid heartbeat that increases the risk of stroke

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Board certified · Aug 5, 2024

    Self-reported via NPPES

  2. 47 years in practice

    Senior practitioner

Internal MedicinePulmonary Disease in Costa MesaAllopathic & Osteopathic Physicians

Pulmonologists specialize in respiratory conditions including asthma, COPD, pneumonia, pulmonary fibrosis, sleep apnea, and lung cancer screening. They manage patients on ventilators and perform bronchoscopies.

Taxonomy: 207RP1001X

Virtual Pulmonary Disease Care With Thomas Joseph Diamant

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Thomas Joseph Diamant for blood pressure monitoring, cholesterol management, asthma reviews — no travel to Costa Mesa required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.

Frequently Asked Questions

Common questions about Thomas Joseph Diamant

NPI records show Dr. Diamant as active with telehealth listed in Costa Mesa, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (949) 873-5537.

Verified across 3 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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