Roy Holliday, M.D
NPI 1790732451 · Radiological Physics Physician · New York, NY
Roy Holliday, M.D is a Radiological Physics Physician provider in New York, NY (NPI 1790732451).
Provider details
- NPI number
- 1790732451
- Entity type
- Individual
- Primary specialty
- Radiological Physics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 156798 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-28
- Last updated
- 2015-01-07
Frequently asked questions
- What is Roy Holliday's NPI number?
- Roy Holliday's National Provider Identifier (NPI) is 1790732451, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Holliday's specialty?
- Roy Holliday is listed in the NPPES registry with a primary specialty of Radiological Physics Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Holliday located?
- Roy Holliday's practice location on file with NPPES is 310 East 14th Street, New York, NY 10003-4201.
- What is Roy Holliday's phone number?
- The practice phone number listed in the NPPES registry for Roy Holliday is (212) 979-4400.
- Is Roy Holliday's NPI active?
- Yes — Roy Holliday's NPI (1790732451) is active in the NPPES registry as of the last update on 2015-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.