William Holtz, M.D.
NPI 1700988268 · Nuclear Medicine Physician · Newport Beach, CA
William Holtz, M.D. is a Nuclear Medicine Physician provider in Newport Beach, CA (NPI 1700988268).
Provider details
- NPI number
- 1700988268
- Entity type
- Individual
- Primary specialty
- Nuclear Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G54674 (CA)
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
19 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
- 2006-09-03
- Last updated
- 2022-07-21
Frequently asked questions
- What is William Holtz's NPI number?
- William Holtz's National Provider Identifier (NPI) is 1700988268, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Holtz's specialty?
- William Holtz is listed in the NPPES registry with a primary specialty of Nuclear Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Holtz located?
- William Holtz's practice location on file with NPPES is 1605 Avocado Ave, Newport Beach, CA 92660-7725.
- What is William Holtz's phone number?
- The practice phone number listed in the NPPES registry for William Holtz is (949) 760-3025.
- Is William Holtz's NPI active?
- Yes — William Holtz's NPI (1700988268) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.