Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Allen Weaver Johnson, PHARM.D.
Pharmacist in Ventura, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639164312
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Registry record
Entity type Individual (Type 1)
Name Dr. Allen Weaver Johnson
Credential PHARM.D.
Sex Male
Practice address 801 Seneca St, Ventura, CA, 93001
Phone (805) 653-6434
Fax (805) 653-0497
Enumeration date Sep 19, 2005
Last updated in NPPES Sep 5, 2013
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Allen Johnson?
The National Provider Identifier (NPI) for Allen Johnson is 1639164312, a Type 1 (individual) record in the CMS NPPES registry.
Where does Allen Johnson practice?
The practice location on file with NPPES is in Ventura, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Aurora Vista Del Mar, LLC Psychiatric Hospital · Ventura, CA NPI 1902863418 Manju Sharma-Beatty Psychiatry Physician · Ventura, CA NPI 1477683282 Manju Sharma, MD, Inc. Psychiatry Physician · Ventura, CA NPI 1831396381 Nora Ekeanya Psychiatry Physician · Ventura, CA NPI 1154749844 Emily Ackerman Psychiatry Physician · Ventura, CA NPI 1861887945 Aurora Vista Del Mar, LLC Psychiatric Hospital · Ventura, CA NPI 1821576216 Godwin Medical Group, Apc Child & Adolescent Psychiatry Physician · Ventura, CA NPI 1013495290 Daniel Coulter, M.D. Inc. Psychiatry Physician · Ventura, CA NPI 1700426558
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-05.