Dr. Kenneth S. Johnson, MD
- Medicare services, 2022
- 18
- Industry payments
- $51
- Affiliated sites
- 1
- Medical group
- 1
- State licenses
- 2
- Practice address
- 11100 Warner Ave, Fountain Valley, CA 92708
- Practice phone
- Call (949) 837-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Genesis Ambulatory Surgery Center, Inc.
Fountain Valley, 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. Kenneth S. Johnson is an anesthesiologist in Fountain Valley, California
Dr. Johnson practices at Genesis Ambulatory Surgery Center, Inc. in Fountain Valley, California.
Dr. Johnson's NPI, 1023199882, was assigned on October 18, 2006. Dr. Johnson graduated from University Of Michigan Medical School in 1984. Dr. Johnson holds California license A43322.
- NPI
- 1023199882NPI Registry (opens in a new tab)
- NPI enumeration date
- October 18, 2006
- NPI status
- Active
- Practice phone
- (949) 837-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Kenneth S. Johnson practices at Genesis Ambulatory Surgery Center, Inc. in Fountain Valley, California
Dr. Johnson's primary practice is Genesis Ambulatory Surgery Center, Inc., at 11100 Warner Ave, Fountain Valley, CA 92708 in Orange County. The practice phone is (949) 837-3000.
- Genesis Ambulatory Surgery Center, Inc.11100 Warner Ave, Fountain Valley, CA 92708 · Orange CountyPhone(949) 837-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kenneth S. Johnson is affiliated with 2 sites of care and 1 medical group
Dr. Johnson's primary practice is Genesis Ambulatory Surgery Center, Inc. in Fountain Valley, California. The medical group on file is Cornerstone Specialty Hospitals Tucson. Dmand AI also links Dr. Johnson to 1 more physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kenneth S. 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 |
|---|---|
| Genesis Ambulatory Surgery Center, Inc. | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kenneth S. Johnson is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Johnson's licenses on file in 2 states: California and Michigan.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Michigan license
Anesthesiologists near Dr. Johnson
Counts of anesthesiologists 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. Kenneth S. Johnson billed Medicare for 18 services in 2022
CMS data shows 18 Medicare services from Dr. Johnson across 1 procedure code in 2022. Medicare paid $2,377 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Anesthesia
- 2021: 112022: 1864%
Dr. Johnson compared with the California median for anesthesiologists, 2022
- Dr. Johnson
- California median
- Medicare services
- 18vs 7275% below
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Johnson's most billed Medicare procedure codes, 2022
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnson and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kenneth S. Johnson's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 50, with 57% 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 50
Patient panel by sex, all payers
- Women57%
- Men43%
Source: Dmand AI Patient Panel Data
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Dr. Kenneth S. Johnson received $51 in industry payments from 2018 to 2022
CMS Open Payments shows 3 general payments to Dr. Johnson from 3 drug and device companies from 2018 to 2022. Food and beverage make up the largest share, 100% of the total. Sun Pharmaceutical Industries Inc. paid the most, $21.
General payments to Dr. Johnson by program year, 2018 to 2022
Companies that paid Dr. Johnson the most, 2018 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kenneth S. Johnson graduated from University Of Michigan Medical School
Dr. Johnson graduated from University Of Michigan Medical School in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kenneth S. 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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Kenneth S. 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. Kenneth S. Johnson's NPI number?
Dr. Kenneth S. Johnson's NPI number is 1023199882. It was assigned on October 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kenneth S. Johnson?
Dr. Kenneth S. Johnson is an anesthesiologist in Fountain Valley, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Kenneth S. Johnson practice?
Dr. Johnson practices at 11100 Warner Ave, Fountain Valley, CA 92708. Dr. Johnson's primary practice is Genesis Ambulatory Surgery Center, Inc. in Fountain Valley, California. Dmand AI also links Dr. Johnson to 1 physician office.
What is Dr. Kenneth S. Johnson's office phone number?
The practice phone on file for Dr. Johnson is (949) 837-3000.
What is Dr. Kenneth S. Johnson's medical license number?
Dr. Johnson holds California license A43322, one of the licenses on file in 2 states.
Which states has Dr. Kenneth S. Johnson been licensed in?
Dmand AI has state licenses on file for Dr. Johnson in California (1986 to 2026) and Michigan (1986 to 1997).
What medical group is Dr. Kenneth S. Johnson part of?
Dr. Johnson is linked to Cornerstone Specialty Hospitals Tucson.
Does Dr. Kenneth S. Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 18 services in 2022.
What services does Dr. Kenneth S. Johnson bill to Medicare?
In 2022, Dr. Johnson's most billed Medicare services were anesthesia (00731).
Where did Dr. Kenneth S. Johnson go to medical school?
Dr. Johnson graduated from University Of Michigan Medical School in 1984.
Has Dr. Kenneth S. Johnson received payments from drug or device companies?
CMS Open Payments shows $51 in general payments to Dr. Johnson from 3 companies from 2018 to 2022. The largest total came from Sun Pharmaceutical Industries Inc.
How long has Dr. Kenneth S. Johnson been practicing?
Dr. Johnson graduated from medical school in 1984, 42 years ago.
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