Douglas Johnston, PHARM.D.
NPI 1043387103 · Pharmacist · Houston, TX
Douglas Johnston, PHARM.D. is a Pharmacist provider in Houston, TX (NPI 1043387103).
Provider details
- NPI number
- 1043387103
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Credential
- PHARM.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 30420 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Pharmacy Service Providers
Pharmacy Service Providers
Pharmacy Service Providers
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
- 2006-11-30
- Last updated
- 2025-09-11
Frequently asked questions
- What is Douglas Johnston's NPI number?
- Douglas Johnston's National Provider Identifier (NPI) is 1043387103, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Johnston's specialty?
- Douglas Johnston is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
- Where is Douglas Johnston located?
- Douglas Johnston's practice location on file with NPPES is 1330 Enclave Pkwy, Houston, TX 77077-2025.
- What is Douglas Johnston's phone number?
- The practice phone number listed in the NPPES registry for Douglas Johnston is (800) 222-2005.
- Is Douglas Johnston's NPI active?
- Yes — Douglas Johnston's NPI (1043387103) is active in the NPPES registry as of the last update on 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.