William Holder, (M.D.,
William Holder, (M.D., runs an independent internist practice in Parsippany, NJ. He has been practicing since 2007 — over 45 years.
Data updated 2025-05-08 on CMS NPPES
Contact & Location
Practice Location
285 N Beverwyck Rd, Parsippany, NJ 07054-2252
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Virtual Internal Medicine Care With William Holder
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with William Holder for follow-ups, medication reviews, and ongoing care — no travel to Parsippany required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about William Holder
NPI records show Dr. Holder as active with telehealth listed in Parsippany, NJ. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (973) 331-9774.
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