Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William Holder, MD

Individual provider Internal Medicine Physician · NPI 1316168602

Dr. William Holder, MD is a Family Practice in Parsippany, New Jersey. Qualified in 1981, 45 years ago. Practices with Lifesource of North Carolina, a 170-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in North Carolina.

Years since qualifying
45
Licensed in
NC
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

285 N Beverwyck Rd
Parsippany, NJ 07054-2252
Phone: (973) 331-9774
Fax: (973) 263-3329
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3205 Randall Pkwy Ste 105, Wilmington, NC 28403-2565 — (910) 742-9243

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2017-00061 (NC)

Record details

NPI number1316168602
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 2, 2007
Last updated in NPPESMay 8, 2025
Certification dateMay 8, 2025
Mailing address285 N Beverwyck Rd, Parsippany, NJ 07054-2252

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Group practice Lifesource Of North Carolina — 170 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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