OrganizationActive
John Y Hess MD a Medical Corporation
NPI 1780796151 · Cardiovascular Disease Physician · Thousand Oaks, CA
Provider details
- NPI number
- 1780796151
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Debra Williams, Business Manager(805) 494-9494
- License
- G32627 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 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
2220 Lynn Rd
Suite 203
Thousand Oaks, CA 91360-1904
Phone: (805) 494-9494
Fax: (805) 374-9994
Street-level locationGet directions
Mailing address
2220 Lynn Rd
Thousand Oaks, CA 91360-1904
Other names (DBA / former)
- Former legal business name
- John Y. Hess, M.D., a Medical Corporation
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2025-09-11
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.