Lois Johnson, MD
NPI 1326150053 · Internal Medicine Physician · Santa Rosa, CA
Lois Johnson, MD is a Internal Medicine Physician provider in Santa Rosa, CA (NPI 1326150053).
Provider details
- NPI number
- 1326150053
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G55518 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 97 | 15 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 24 | — |
| Naltrexone Hcl | 20 | — |
| Oxycodone Hcl | 20 | — |
| Lorazepam | 19 | — |
| Nystatin | 19 | — |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lois Johnson's NPI number?
- Lois Johnson's National Provider Identifier (NPI) is 1326150053, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lois Johnson's specialty?
- Lois Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lois Johnson located?
- Lois Johnson's practice location on file with NPPES is 1029 Third Street, Santa Rosa, CA 95404.
- What is Lois Johnson's phone number?
- The practice phone number listed in the NPPES registry for Lois Johnson is (707) 522-1466.
- Is Lois Johnson's NPI active?
- Yes — Lois Johnson's NPI (1326150053) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.