Physician Profile
William Holder, (M.D.
Unclaimed ProfileAbout Dr. Holder
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Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (973) 331-9774
- Email not available
Practice Locations
285 N BEVERWYCK RD
Parsippany, NJ 07054
3205 Randall Pkwy Ste 105
Wilmington, NC 28403
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists in Parsippany 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does William Holder specialize in?
William Holder is an internist in Parsippany, NJ. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where is William Holder located?
William Holder is listed at 285 N Beverwyck Rd, Parsippany, NJ 07054. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is William Holder's phone number?
The number on file is (973) 331-9774. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is William Holder's NPI number?
William Holder's National Provider Identifier is 1316168602. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did William Holder train?
William Holder attended Other, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How long has William Holder been practicing?
William Holder has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
Has William Holder confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William Holder. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.