Jon Sassin, M.D.
NPI 1134130917 · Neurology Physician · Napa, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jon Sassin, M.D. is a Neurology Physician provider in Napa, CA (NPI 1134130917).
Provider details
- NPI number
- 1134130917
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C30421 (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
- 2009-02-11
Frequently asked questions
- What is Jon Sassin's NPI number?
- Jon Sassin's National Provider Identifier (NPI) is 1134130917, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jon Sassin's specialty?
- Jon Sassin is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Jon Sassin located?
- Jon Sassin's practice location on file with NPPES is 855 Bordeaux Way, Napa, CA 94558-7549.
- What is Jon Sassin's phone number?
- The practice phone number listed in the NPPES registry for Jon Sassin is (707) 252-8400.
- Does Jon Sassin accept Medicare?
- Jon Sassin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jon Sassin's NPI active?
- Yes — Jon Sassin's NPI (1134130917) is active in the NPPES registry as of the last update on 2009-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.