William Holaday, M.D.
NPI 1851392112 · Surgery Physician · Moorestown, NJ
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Holaday, M.D. is a Surgery Physician provider in Moorestown, NJ (NPI 1851392112).
Provider details
- NPI number
- 1851392112
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA04411100 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
153 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 126 | $102 |
| Partial Removal of Breast19301 | 14 | $742 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 13 | $245 |
Typical Medicare-allowed amounts for these services range $102–$742 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-09
- Last updated
- 2023-12-21
- Certified
- 2023-12-21
Frequently asked questions
- What is William Holaday's NPI number?
- William Holaday's National Provider Identifier (NPI) is 1851392112, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Holaday's specialty?
- William Holaday is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Holaday located?
- William Holaday's practice location on file with NPPES is 401 Young Ave Ste 375a, Moorestown, NJ 08057-3130.
- What is William Holaday's phone number?
- The practice phone number listed in the NPPES registry for William Holaday is (856) 291-8920.
- Does William Holaday accept Medicare?
- William Holaday is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Holaday's NPI active?
- Yes — William Holaday's NPI (1851392112) is active in the NPPES registry as of the last update on 2023-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.