William Nakashima, MD
NPI 1962413773 · Internal Medicine Physician · Marysville, CA
William Nakashima, MD is a Internal Medicine Physician provider in Marysville, CA (NPI 1962413773).
Provider details
- NPI number
- 1962413773
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G13888 (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
- 2006-08-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Nakashima's NPI number?
- William Nakashima's National Provider Identifier (NPI) is 1962413773, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Nakashima's specialty?
- William Nakashima is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Nakashima located?
- William Nakashima's practice location on file with NPPES is 414 G St, Marysville, CA 95903.
- What is William Nakashima's phone number?
- The practice phone number listed in the NPPES registry for William Nakashima is (530) 741-3688.
- Is William Nakashima's NPI active?
- Yes — William Nakashima's NPI (1962413773) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.