Top 20 Largest Sleep Medicine Physician Group Practices

Last updated on September 2nd, 2026

The largest sleep medicine physician groups in the US are ranked by the number of affiliated physicians. The list is led by The Insomnia and Sleep Institute of Arizona with 9 physicians, followed by Delta Waves LLC and Colorado Sleep Institute with 7 each. Because physician affiliations and practice structures change, this ranking should be treated as an Ampliz dataset snapshot rather than a definitive national ranking of every sleep medicine organization.

What Is a Sleep Medicine Physician Group?

A sleep medicine physician group is a medical practice or organized provider group focused on diagnosing and treating sleep and wake disorders. Sleep medicine commonly brings together physicians with backgrounds in internal medicine, pulmonary medicine, neurology, pediatrics, psychiatry, family medicine, and other related fields. The American Medical Association notes that sleep specialists use clinical evaluation and diagnostic tools such as polysomnography, actigraphy, validated sleep questionnaires, and portable sleep apnea monitoring. Sleep care can also involve devices, medication, behavioral therapy, and other interventions.

Why Sleep Medicine Matters to Healthcare Marketers?

Sleep medicine is a focused but multidisciplinary market. A single sleep practice may influence purchases across diagnostic testing, patient monitoring, respiratory equipment, software, staffing, clinical services, and patient-engagement solutions. That makes sleep medicine groups relevant accounts for medical device companies, diagnostics companies, health IT vendors, staffing firms, pharmaceutical organizations, and B2B healthcare service providers.

• Sleep diagnostics and testing equipment, including polysomnography and home sleep apnea testing.
• CPAP, PAP, respiratory, monitoring, and related durable medical equipment ecosystems.
• Sleep-management software, scheduling, referral, patient-engagement, and workflow tools.
• Clinical staffing and physician recruitment services for sleep medicine programs.
• Healthcare marketing, data enrichment, and sales intelligence solutions.

How Many Sleep Medicine Specialists Are in the US?

As of Ampliz reports there are more than 1,300 AASM-accredited sleep medicine centers in the US and 5,900 board-certified sleep medicine physicians in the US based on ABMS 2025 data. AASM also reports more than 100 sleep medicine fellowship training programs. These figures show why a narrow list of physician groups should be used as a targeted prospecting view rather than as a count of the entire sleep medicine market.

Top 20 Largest Sleep Medicine Physician Groups in the

Based on the number of affiliated physicians, here are the top 20 sleep medicine physician groups in the USA:​

These groups are prime targets for healthcare products and services due to their size and centralized decision-making processes.

How to Use a Sleep Medicine Physician Group List for B2B Marketing

1. Define the ideal account first. Decide whether your product fits independent sleep practices, multispecialty groups, health-system sleep centers, or sleep-focused technology providers.
2. Segment by geography. Prioritize states, metropolitan areas, or territories where your sales team already has coverage or where demand is strongest.
3. Map the buying committee. Look beyond physicians and identify medical directors, practice administrators, operations leaders, procurement contacts, IT leaders, and business development stakeholders.
4. Match the message to the specialty. A diagnostic company should lead with testing workflow and clinical efficiency; a software company may lead with interoperability, scheduling, referrals, or patient engagement.
5. Enrich and verify contact data before outreach. Physician movement, practice affiliations, acquisitions, and leadership changes can make static lists stale.
6. Track the account after the first touch. Use CRM enrichment and account intelligence to monitor role changes, new locations, new services, and other buying signals.

Conclusion

The landscape of sleep medicine is expanding, presenting ample opportunities for healthcare marketers. By targeting the largest physician groups and utilizing platforms like Ampliz Healthcare Intelligence, you can effectively reach decision-makers, tailor your offerings to meet their needs, and establish lasting partnerships that contribute to improved patient care and business success.

Looking to reach sleep medicine physicians and healthcare decision-makers across the US? Ampliz helps healthcare marketing and sales teams build targeted provider and organization lists, enrich existing records, and connect with the right prospects. Book a demo to see how Ampliz can support your sleep medicine market strategy.

Subbu

V. Subramanyam
Head of Product at Ampliz | Healthcare Data & GTM Intelligence Expert

V. Subramanyam is the Head of Product at Ampliz, where he leads the strategy and development of healthcare data intelligence solutions that help sales, marketing, recruiting, and commercial teams identify and engage healthcare decision-makers across the United States.

With extensive experience in product management, healthcare data, B2B SaaS, GTM strategy, and sales intelligence, he focuses on building products that simplify healthcare prospecting through accurate physician, hospital, executive, and healthcare organization data. His work emphasizes data quality, enrichment, and AI-powered workflows that enable organizations to make faster, data-driven decisions.

Connect with Him:

• LinkedIn: https://www.linkedin.com/in/vsubramanyam
• Company: https://www.ampliz.com