Charles R. Johnson MD, Inc.
NPI 1528152717 · Internal Medicine Physician · National City, CA
Charles R. Johnson MD, Inc. is a Internal Medicine Physician organization in National City, CA (NPI 1528152717).
Provider details
- NPI number
- 1528152717
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mignon Willis, Business Coordinator(619) 267-4255
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
- 2006-10-03
- Last updated
- 2008-04-11
Frequently asked questions
- What is Charles R. Johnson MD, Inc.'s NPI number?
- Charles R. Johnson MD, Inc.'s National Provider Identifier (NPI) is 1528152717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Charles R. Johnson MD, Inc.?
- Charles R. Johnson MD, Inc. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles R. Johnson MD, Inc. located?
- Charles R. Johnson MD, Inc.'s practice location on file with NPPES is 2400 E 8th St, National City, CA 91950.
- What is Charles R. Johnson MD, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Charles R. Johnson MD, Inc. is (619) 267-4255.
- Who is the authorized official for Charles R. Johnson MD, Inc.?
- The authorized official listed on Charles R. Johnson MD, Inc.'s NPPES record is Mignon Willis, Business Coordinator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Charles R. Johnson MD, Inc.'s NPI active?
- Yes — Charles R. Johnson MD, Inc.'s NPI (1528152717) is active in the NPPES registry as of the last update on 2008-04-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.