Karlon Johnson, M.D.
NPI 1144325473 · Family Medicine Physician · Hawthorne, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karlon Johnson, M.D. is a Family Medicine Physician provider in Hawthorne, CA (NPI 1144325473).
Provider details
- NPI number
- 1144325473
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G70613 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 260 | 85 |
| Atorvastatin Calcium | 212 | 82 |
| Losartan Potassium | 180 | 59 |
| Gabapentin | 177 | 48 |
| Metformin Hcl | 139 | 44 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 132 | 30 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-13
- Last updated
- 2026-01-15
- Certified
- 2026-01-15
Frequently asked questions
- What is Karlon Johnson's NPI number?
- Karlon Johnson's National Provider Identifier (NPI) is 1144325473, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karlon Johnson's specialty?
- Karlon Johnson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karlon Johnson located?
- Karlon Johnson's practice location on file with NPPES is 4455 W 117th St Ste 300, Hawthorne, CA 90250-2240.
- What is Karlon Johnson's phone number?
- The practice phone number listed in the NPPES registry for Karlon Johnson is (310) 645-0444.
- Does Karlon Johnson accept Medicare?
- Karlon Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karlon Johnson's NPI active?
- Yes — Karlon Johnson's NPI (1144325473) is active in the NPPES registry as of the last update on 2026-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.