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DR. WILLIAM HOLDER (M.D.,
NPI 1316168602
Internal Medicine in Parsippany, NJ

Active since May 02, 2007PECOS EnrolledAccepts Medicare Assignment
285 N BEVERWYCK RD, PARSIPPANY, NJ 07054(973) 331-9774(973) 263-3329 Get Directions Write a Review

NPPES record last updated: May 8, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: May 8, 2025, Sep 5, 2024 (2 updates tracked since 2024).

About Dr. William Holder (m.d., NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM HOLDER (M.D., (NPI 1316168602) is an individual internal medicine provider in Parsippany, New Jersey, licensed in North Carolina (2017-00061) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Wilmington, and is a graduate of Other (1981).

NPPES Registry Identity

NPI1316168602
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM HOLDERCredential: (M.D.,
Location Address285 N BEVERWYCK RDParsippany, NJ 07054-2252
Mailing Address285 N Beverwyck RdParsippany, NJ 07054-2252 · (973) 331-9774
Phone(973) 331-9774
Fax(973) 263-3329
Sole ProprietorYes
Medical School CMSOtherGraduated 1981
Enumeration DateMay 2, 2007
Last NPPES UpdateMay 8, 20252 updates tracked since enumeration
NPPES CertifiedMay 8, 2025
✔ NPI 1316168602 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NC · 2017-00061
Definition
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.
285 N BEVERWYCK RD, Parsippany, NJ 07054
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Secondary Practice Location 1

Location 13205 Randall Pkwy Ste 105Wilmington, NC 28403-2565 · Phone (910) 742-9243

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of NC.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Holder (m.d., is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7911332838
PECOS Enrollment IDI20200122002148
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07054 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.86 typical visit price
range $63.84 – $190.92
Typical copayment $36.21 (range $15.96 – $47.73)
Most-billed visit code 99204
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Holder's NPI number?

The NPI number for William Holder is 1316168602. It was assigned to this individual provider in the NPPES registry on May 2, 2007.

Where is William Holder located?

William Holder practices at 285 N Beverwyck Rd, Parsippany, NJ 07054. The listed phone number is (973) 331-9774.

What is William Holder's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William Holder enrolled in Medicare?

Yes. William Holder is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Holder accept?

Health plans from Blue Cross and Blue Shield of NC list William Holder as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Holder was last updated on May 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.