Penny Johnson, MD
NPI 1497942106 · Diagnostic Radiology Physician · Downey, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Penny Johnson, MD is a Diagnostic Radiology Physician provider in Downey, CA (NPI 1497942106).
Provider details
- NPI number
- 1497942106
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A121083 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
900 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Screening Mammography77067 | 299 | $132 |
| Complete Ultrasound Scan of 1 Breast76641 | 104 | $134 |
| Complete Ultrasound Scan of Abdomen76700 | 91 | $123 |
| Mri Scan of Leg Joint Without Contrast73721 | 60 | $204 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 52 | $200 |
| X-Ray of Chest, 2 Views71046 | 45 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-26
- Last updated
- 2023-06-01
- Certified
- 2023-05-04
Frequently asked questions
- What is Penny Johnson's NPI number?
- Penny Johnson's National Provider Identifier (NPI) is 1497942106, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Penny Johnson's specialty?
- Penny Johnson is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Penny Johnson located?
- Penny Johnson's practice location on file with NPPES is 11411 Brookshire Ave Ste 101, Downey, CA 90241-5008.
- What is Penny Johnson's phone number?
- The practice phone number listed in the NPPES registry for Penny Johnson is (562) 869-9192.
- Does Penny Johnson accept Medicare?
- Penny Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Penny Johnson's NPI active?
- Yes — Penny Johnson's NPI (1497942106) is active in the NPPES registry as of the last update on 2023-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.