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Holland St. John
NPI 1609884931 · Internal Medicine Physician · Sunnyvale, CA
Holland St. John is a Internal Medicine Physician provider in Sunnyvale, CA (NPI 1609884931).
Provider details
- NPI number
- 1609884931
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- C50723 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
301 Old San Francisco Rd
Sunnyvale, CA 94086-6386
Phone: (408) 739-6000
Street-level locationGet directions
Mailing address
301 Old San Francisco Rd
Sunnyvale, CA 94086-6386
Registry dates
- Enumerated
- 2006-08-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Holland St. John's NPI number?
- Holland St. John's National Provider Identifier (NPI) is 1609884931, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Holland St. John's specialty?
- Holland St. John is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Holland St. John located?
- Holland St. John's practice location on file with NPPES is 301 Old San Francisco Rd, Sunnyvale, CA 94086-6386.
- What is Holland St. John's phone number?
- The practice phone number listed in the NPPES registry for Holland St. John is (408) 739-6000.
- Is Holland St. John's NPI active?
- Yes — Holland St. John's NPI (1609884931) 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.