William H Mollohan, D.O.

Internal Medicine

William H Mollohan is an Internal Medicine specialist based in Naperville, IL with over 41 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(630) 548-5936Naperville, IL
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

William H Mollohan, D.O. has been part of the Naperville medical community since 2006 in group practice. He graduated from Oklahoma State University College of Osteopathic Medicine in 1985 and has 41+ years of clinical experience. A physician who provides long-term, comprehensive care in the office and the hospital.

1 of 997 Internal Medicine providers in ILSee all Internal Medicine in Naperville41+ years experienceNPI since 2006

Older · 6894dNPPES updated 2007-07-09 · verify NPI on CMS · Verify license at Illinois Department of Financial & Professional Regulation — Medical

Contact & Location

Practice Location

535 Fairway Dr Suite 107, Naperville, IL 60563-3938

Fax: (630) 548-5940
Industry Payment Transparency

$95 received from industry

1 transaction reported in 2024 ·Low tier

View on CMS Open Payments →

Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.

Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to William H Mollohan's NPI.

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Background & Specialty

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

Career Journey
  1. Graduated medical school · 1985

    Oklahoma State University College of Osteopathic Medicine

  2. 41 years in practice

    Senior practitioner

Internal MedicineAllopathic & Osteopathic Physicians

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Taxonomy: 207R00000X

Education & Training

Oklahoma State University College of Osteopathic Medicine (Class of 1985)

Practice Footprint

Mailing address

Po Box 245, Eola, IL 60519-0245

Differs from practice location

Virtual Internal Medicine Care With William H Mollohan

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

Schedule a virtual visit with William H Mollohan for follow-ups, medication reviews, and ongoing care — no travel to Naperville required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about William H Mollohan

Dr. Mollohan is listed as active in the NPI registry with telehealth listed in Naperville, IL. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (630) 548-5936.

Verified across 3 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Open Payments 2024. 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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