Douglas Tapper, M.D.
NPI 1003994864 · Critical Care Medicine (Internal Medicine) Physician · Saint Helena, CA
Douglas Tapper, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in Saint Helena, CA (NPI 1003994864).
Provider details
- NPI number
- 1003994864
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G59948 (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
- 2006-11-01
- Last updated
- 2017-10-11
Frequently asked questions
- What is Douglas Tapper's NPI number?
- Douglas Tapper's National Provider Identifier (NPI) is 1003994864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Tapper's specialty?
- Douglas Tapper is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Tapper located?
- Douglas Tapper's practice location on file with NPPES is 10 Woodland Rd, Saint Helena, CA 94574-9554.
- What is Douglas Tapper's phone number?
- The practice phone number listed in the NPPES registry for Douglas Tapper is (707) 963-6399.
- Is Douglas Tapper's NPI active?
- Yes — Douglas Tapper's NPI (1003994864) is active in the NPPES registry as of the last update on 2017-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.