Lois Christine Johnson, MD
Internal Medicine Physician · Santa Rosa, CA
Lois Christine Johnson, MD is an internal medicine physician with a practice address in Santa Rosa, California, and NPI 1326150053, issued on Aug 31, 2006. Check the license (California G55518, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lois Christine Johnson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G55518 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1029 Third Street, Santa Rosa, CA 95404
- Phone
- (707) 522-1466
- Enumerated
- Aug 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 522-1467
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Lois Christine Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
511 Medicare Part D claims for 53 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 44 claims were for opioids.
Most prescribed
- Levothyroxine Sodium97 claims
- Morphine Sulfate Er24 claims
- Naltrexone Hcl20 claims
- Oxycodone Hcl20 claims
- Lorazepam19 claims
- Nystatin19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $23.31
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Lois Christine Johnson among 17,696 internal medicine physician records in California
Lois Christine Johnson, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
98 internal medicine physician records list a practice address in Santa Rosa
They are 98 of the 6,884 NPPES records with a practice address in Santa Rosa, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Rosa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lilian Lao, M.D.Santa Rosa, CA 954041497059885
- Mandeep Nagra, MB,BSSanta Rosa, CA 954041851325914
- Nicholas Anton, MDSanta Rosa, CA 954051659364933
- George Bisbee, MDSanta Rosa, CA 954051235122516
- David Capaccio, DOSanta Rosa, CA 954051457355364
- David Chan, MDSanta Rosa, CA 954031972132546
- Catherine Davis, MDSanta Rosa, CA 954051497748776
- Marlon Decastro, M.D.Santa Rosa, CA 954051780643270
Common questions
What is Lois Christine Johnson, MD's NPI number?
Lois Christine Johnson, MD's National Provider Identifier (NPI) is 1326150053, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lois Christine Johnson, MD located?
The NPPES record lists a practice address at 1029 Third Street, Santa Rosa, CA, 95404. Phone: (707) 522-1466. Providers update this record themselves, so call before visiting.
How can I verify Lois Christine Johnson, MD's license?
NPPES lists California license number G55518, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lois Christine Johnson, MD prescribe under Medicare Part D?
In 2024, Lois Christine Johnson, MD had 511 Medicare Part D claims for 53 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Lois Christine Johnson, MD's MIPS final score?
The 2023 MIPS final score is 73.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.