Ronald Holz, MD/PHD
NPI 1013868207 · Student in an Organized Health Care Education/Training Program · Mill Valley, CA
Ronald Holz, MD/PHD is a Student in an Organized Health Care Education/Training Program provider in Mill Valley, CA (NPI 1013868207).
Provider details
- NPI number
- 1013868207
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD/PHD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
83% 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
- 2026-02-04
- Last updated
- 2026-02-04
- Certified
- 2026-02-04
Frequently asked questions
- What is Ronald Holz's NPI number?
- Ronald Holz's National Provider Identifier (NPI) is 1013868207, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Holz's specialty?
- Ronald Holz is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Ronald Holz located?
- Ronald Holz's practice location on file with NPPES is 65 Longfellow Rd, Mill Valley, CA 94941-1592.
- What is Ronald Holz's phone number?
- The practice phone number listed in the NPPES registry for Ronald Holz is (734) 904-5227.
- Is Ronald Holz's NPI active?
- Yes — Ronald Holz's NPI (1013868207) is active in the NPPES registry as of the last update on 2026-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.