John Stempien
NPI 1073969747 · Student in an Organized Health Care Education/Training Program · Tarzana, CA
John Stempien is a Student in an Organized Health Care Education/Training Program provider in Tarzana, CA (NPI 1073969747).
Provider details
- NPI number
- 1073969747
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
- Behavior Analyst103K00000X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 220 Twin Dolphin Dr Ste DRedwood City, CA 94065-1488Phone: (650) 622-9601
Registry dates
- Enumerated
- 2016-05-11
- Last updated
- 2019-05-07
Frequently asked questions
- What is John Stempien's NPI number?
- John Stempien's National Provider Identifier (NPI) is 1073969747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Stempien's specialty?
- John Stempien is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is John Stempien located?
- John Stempien's practice location on file with NPPES is 18646 Oxnard St, Tarzana, CA 91356-1411.
- What is John Stempien's phone number?
- The practice phone number listed in the NPPES registry for John Stempien is (818) 654-3908.
- Is John Stempien's NPI active?
- Yes — John Stempien's NPI (1073969747) is active in the NPPES registry as of the last update on 2019-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.