John Hornberger, MD, MS
NPI 1801942909 · Internal Medicine Physician · Menlo Park, CA
John Hornberger, MD, MS is a Internal Medicine Physician provider in Menlo Park, CA (NPI 1801942909).
Provider details
- NPI number
- 1801942909
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MS
- Sex
- Male
- Sole proprietor
- No
- License
- G59734 (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
- 2007-01-25
- Last updated
- 2016-04-12
Frequently asked questions
- What is John Hornberger's NPI number?
- John Hornberger's National Provider Identifier (NPI) is 1801942909, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hornberger's specialty?
- John Hornberger is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Hornberger located?
- John Hornberger's practice location on file with NPPES is 795 Willow Rd, Menlo Park, CA 94025-2539.
- What is John Hornberger's phone number?
- The practice phone number listed in the NPPES registry for John Hornberger is (650) 493-5000.
- Is John Hornberger's NPI active?
- Yes — John Hornberger's NPI (1801942909) is active in the NPPES registry as of the last update on 2016-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.