Jan O Sonander, MD
NPI 1669659389 · Family Medicine Physician · Santa Rosa, CA
Jan O Sonander, MD is a Family Medicine Physician organization in Santa Rosa, CA (NPI 1669659389).
Provider details
- NPI number
- 1669659389
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jan Sonander, Owner(707) 542-8700
- License
- G56178 (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
18 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
- 2008-01-24
- Last updated
- 2008-09-18
Frequently asked questions
- What is Jan O Sonander, MD's NPI number?
- Jan O Sonander, MD's National Provider Identifier (NPI) is 1669659389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Jan O Sonander, MD?
- Jan O Sonander, MD is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jan O Sonander, MD located?
- Jan O Sonander, MD's practice location on file with NPPES is 11 Doctors Park Dr, Santa Rosa, CA 95405.
- What is Jan O Sonander, MD's phone number?
- The practice phone number listed in the NPPES registry for Jan O Sonander, MD is (707) 542-8700.
- Who is the authorized official for Jan O Sonander, MD?
- The authorized official listed on Jan O Sonander, MD's NPPES record is Jan Sonander, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Jan O Sonander, MD's NPI active?
- Yes — Jan O Sonander, MD's NPI (1669659389) is active in the NPPES registry as of the last update on 2008-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.