John Holly, M.D.
NPI 1851490387 · Neurological Surgery Physician · Los Angeles, CA
John Holly, M.D. is a Neurological Surgery Physician provider in Los Angeles, CA (NPI 1851490387).
Provider details
- NPI number
- 1851490387
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C33445 (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
- 2006-09-21
- Last updated
- 2008-02-22
Frequently asked questions
- What is John Holly's NPI number?
- John Holly's National Provider Identifier (NPI) is 1851490387, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Holly's specialty?
- John Holly is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Holly located?
- John Holly's practice location on file with NPPES is 1414 S Grand Ave, Los Angeles, CA 90015-3067.
- What is John Holly's phone number?
- The practice phone number listed in the NPPES registry for John Holly is (213) 745-5595.
- Is John Holly's NPI active?
- Yes — John Holly's NPI (1851490387) is active in the NPPES registry as of the last update on 2008-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.