Dr. Karen Sue Johnson, MD
- Medicare services, 2021
- 39
- Part D claims, 2024
- 23
- Industry payments
- $19
- Medical group
- 1
- State license
- 1
- Practice address
- 9965 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Dr. Johnson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Karen Sue Johnson is an emergency medicine physician in Fontana, California
Dr. Johnson practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Dr. Johnson's NPI, 1154436202, was assigned on August 20, 2006. Dr. Johnson holds California license G69140.
- NPI
- 1154436202NPI Registry (opens in a new tab)
- NPI enumeration date
- August 20, 2006
- NPI status
- Active
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Karen Sue Johnson practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Dr. Johnson's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karen Sue Johnson is affiliated with 1 site of care and 1 medical group
Dr. Johnson's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. The medical group on file is Southern California Permanente Medical Group.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Karen Sue Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Fontana Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karen Sue Johnson is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Johnson is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Johnson
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Karen Sue Johnson billed Medicare for 39 services in 2021
CMS data shows 39 Medicare services from Dr. Johnson across 2 procedure codes in 2021. Medicare paid $2,717 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Tests and treatments
- 2020: 212021: 225%
- Office and hospital visits
- 2020: 02021: 17
Dr. Johnson compared with the California median for emergency medicine physicians, 2021
- Dr. Johnson
- California median
- Medicare services
- 39vs 26585% below
- Part D claims
- 12vs 6281% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Johnson's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen Sue Johnson's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 37, with 76% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women76%
- Men24%
Source: Dmand AI Patient Panel Data
Dr. Karen Sue Johnson wrote 23 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 23 Medicare Part D claims for 21 patients. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $92 in total drug cost. In 2017, CMS named 12 claims across 1 drug.
Dr. Johnson's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Johnson's Part D claims, 2024
- Antibiotics70%16 of 23 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2017 to 2019
- 2017
- 2019
- Claims for drugs CMS names
- 2017: 122019: 12No change
Drugs named by CMS: 1 in 2019, 1 in 2017.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Karen Sue Johnson received $19 in industry payments in 2020
CMS Open Payments shows 1 general payment to Dr. Johnson from 1 drug or device company in 2020. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $19.
Companies that paid Dr. Johnson the most, 2020 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Karen Sue Johnson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Karen Sue Johnson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Karen Sue Johnson's NPI number?
Dr. Karen Sue Johnson's NPI number is 1154436202. It was assigned on August 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Sue Johnson?
Dr. Karen Sue Johnson is an emergency medicine physician in Fontana, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Karen Sue Johnson practice?
Dr. Johnson practices at 9965 Sierra Ave, Fontana, CA 92335. Dr. Johnson's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California.
What is Dr. Karen Sue Johnson's office phone number?
The practice phone on file for Dr. Johnson is (909) 427-5000.
What is Dr. Karen Sue Johnson's medical license number?
Dr. Johnson holds California license G69140.
What medical group is Dr. Karen Sue Johnson part of?
Dr. Johnson is linked to Southern California Permanente Medical Group.
Does Dr. Karen Sue Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 39 services in 2021.
What services does Dr. Karen Sue Johnson bill to Medicare?
In 2021, Dr. Johnson's most billed Medicare services were heart test or procedure (93010) and emergency department visit (99285).
What drugs does Dr. Karen Sue Johnson prescribe most?
In 2019 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Cephalexin.
Has Dr. Karen Sue Johnson received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Dr. Johnson from 1 company from 2020 to 2020. The largest total came from Allergan Inc.
How long has Dr. Karen Sue Johnson been practicing?
Dr. Johnson's NPI was assigned in 2006.
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