Dr. Karl Knudsen Johsens, MD
- Medicare services, 2024
- 2,320
- Medicare patients, 2024
- 241
- Part D claims, 2024
- 4,310
- MIPS score, 2024
- 87
- Hospital affiliations
- 2
- Practice address
- 540 Soquel Ave, Santa Cruz, CA 95062
- Practice phone
- Call (831) 425-1279
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cedar Medical Clinic
Santa Cruz, California
Find Dr. Johsens' 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. Karl Knudsen Johsens is an internist in Santa Cruz, California
Dr. Johsens practices at Cedar Medical Clinic in Santa Cruz, California.
Dr. Johsens' NPI, 1295948727, was assigned on May 8, 2007. Dr. Johsens graduated from John A. Burns School of Medicine in 1993. Dr. Johsens holds California license G84030.
- NPI
- 1295948727NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446149025
- NPI enumeration date
- May 8, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (831) 425-1279
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karl Knudsen Johsens practices at Cedar Medical Clinic in Santa Cruz, California
Dr. Johsens' primary practice is Cedar Medical Clinic, at 540 Soquel Ave, Santa Cruz, CA 95062 in Santa Cruz County. The practice phone is (831) 425-1279.
- Cedar Medical Clinic540 Soquel Ave, Santa Cruz, CA 95062 · Santa Cruz CountyPhone(831) 425-1279
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karl Knudsen Johsens is affiliated with 8 sites of care
Dr. Johsens' primary practice is Cedar Medical Clinic in Santa Cruz, California. Dr. Johsens is also affiliated with Dignity Health - Dominican Hospital. Dmand AI also links Dr. Johsens to 1 more hospital, 2 home health agencies, 1 physician office, 1 hospice and 1 skilled nursing facility, each 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. Karl Knudsen Johsens' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johsens practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cedar Medical Clinic | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karl Knudsen Johsens is one of 16,751 internists in California
Internal medicine is Dr. Johsens' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Johsens is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Johsens' licenses on file in 2 states: California and Colorado.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Colorado license
Clinical focus
Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute gastroduodenitis, acute kidney failure, acute sinusitis, acute skin infection, alzheimer's disease and aneurysm among the conditions Dr. Johsens treats.
Internists near Dr. Johsens
Counts of internists 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. Karl Knudsen Johsens billed Medicare for 2,320 services in 2024
CMS data shows 2,320 Medicare services from Dr. Johsens across 13 procedure codes in 2024, for 241 Medicare patients. Medicare paid $147,982 for them. Every service was in an office.
Dr. Johsens' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,1272024: 1,25311%
- Other services
- 2023: 2062024: 946359%
- Tests and treatments
- 2023: 1912024: 10545%
- Surgery
- 2023: 142024: 1614%
- Drugs given in the office
- 2023: 192024: 0100%
Dr. Johsens compared with the California median for internists, 2024
- Dr. Johsens
- California median
- Medicare services
- 2,320vs 3616.4 times
- Medicare patients
- 241vs 15160% above
- Part D claims
- 3,538vs 4218.4 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Johsens' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Johsens?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johsens and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karl Knudsen Johsens treated 241 Medicare patients in 2024, average age 76
CMS counts 241 Medicare patients who saw Dr. Johsens in 2024. The largest group is 65 to 74, with 111 patients. 69% of them have high cholesterol, and 66% have high blood pressure. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johsens' median patient age at 77, with 42% women.
Dr. Johsens' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Johsens' Medicare patients by sex, 2024
- Women9841%
- Men14359%
Chronic conditions among Dr. Johsens' Medicare patients, 2024
- High cholesterol69%
- High blood pressure66%
- Arthritis41%
- Chronic kidney disease27%
- Ischemic heart disease23%
- Mood disorders23%
- Anxiety20%
- Atrial fibrillation19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johsens' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women42%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karl Knudsen Johsens wrote 4,310 Medicare Part D claims in 2024
In 2024, Dr. Johsens wrote 4,310 Medicare Part D claims for 235 patients. 88% of them were for generic drugs. CMS names the drug for 3,538 of them, across 94 drugs with 11 or more claims each, at $234,471 in total drug cost. In 2023, CMS named 3,606 claims across 102 drugs.
Dr. Johsens' Part D claims by kind of drug, 2024
- Generic3,788 claims88%
- Brand-name490 claims11%
- Other32 claims1%
Dr. Johsens' most prescribed drugs by claims, 2024
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. Johsens' Part D claims, 2024
- Opioids5%214 of 4,310 claims
- Antibiotics4%187 of 4,310 claims
- Antipsychotics, patients 65 and over1%27 of 4,310 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,6062024: 3,5382%
Drugs named by CMS: 94 in 2024, 102 in 2023.
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
Dr. Karl Knudsen Johsens scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Johsens for performance year 2024, reported individually. Dr. Johsens accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johsens as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Johsens' MIPS scores, performance year 2024
- 87of 100Final score
- 83.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Karl Knudsen Johsens has 1 award and honors on record
Dmand AI lists 1 award for Dr. Johsens, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Johsens
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Karl Knudsen Johsens graduated from John A. Burns School of Medicine
Dr. Johsens graduated from John A. Burns School of Medicine in 1993. Dr. Johsens is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Karl Knudsen Johsens accepts plans from 11 insurance carriers
Dr. Johsens is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Humana
- Regence Health Plans
- +3 more carriersWith a free account
Plan types Dr. Johsens accepts, by number of carriers
- Medicare8
- PPO8
- POS4
- EPO3
- HMO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Karl Knudsen Johsens'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Karl Knudsen Johsens
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. Karl Knudsen Johsens' NPI number?
Dr. Karl Knudsen Johsens' NPI number is 1295948727. It was assigned on May 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Karl Knudsen Johsens?
Dr. Karl Knudsen Johsens is an internist in Santa Cruz, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Karl Knudsen Johsens practice?
Dr. Johsens practices at 540 Soquel Ave, Santa Cruz, CA 95062. Dr. Johsens' primary practice is Cedar Medical Clinic in Santa Cruz, California. Dmand AI also links Dr. Johsens to 1 hospital, 2 home health agencies, 1 physician office, 1 hospice and 1 skilled nursing facility.
What is Dr. Karl Knudsen Johsens' office phone number?
The practice phone on file for Dr. Johsens is (831) 425-1279.
What is Dr. Karl Knudsen Johsens' medical license number?
Dr. Johsens holds California license G84030, one of the licenses on file in 2 states.
Which states has Dr. Karl Knudsen Johsens been licensed in?
Dmand AI has state licenses on file for Dr. Johsens in California (1997 to 2026) and Colorado (1995 to 1999).
Which hospitals is Dr. Karl Knudsen Johsens affiliated with?
Dr. Johsens is affiliated with Dignity Health - Dominican Hospital. Dmand AI links Dr. Johsens to 1 more hospital.
Does Dr. Karl Knudsen Johsens accept Medicare?
Yes. CMS data shows Dr. Johsens billed Medicare for 2,320 services in 2024, and Dr. Johsens accepts Medicare assignment.
Does Dr. Karl Knudsen Johsens offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Johsens as offering telehealth services.
What is Dr. Karl Knudsen Johsens' MIPS score?
Dr. Johsens' MIPS final score for performance year 2024 is 87 out of 100, reported individually.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Karl Knudsen Johsens see?
CMS counts 241 Medicare patients who saw Dr. Johsens in 2024, with an average age of 76.
Is Dr. Karl Knudsen Johsens board certified?
Yes. Dr. Johsens is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Karl Knudsen Johsens bill to Medicare?
In 2024, Dr. Johsens' most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Karl Knudsen Johsens go to medical school?
Dr. Johsens graduated from John A. Burns School of Medicine in 1993.
What drugs does Dr. Karl Knudsen Johsens prescribe most?
In 2024 Medicare Part D data, Dr. Johsens' most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Losartan Potassium.
How long has Dr. Karl Knudsen Johsens been practicing?
Dr. Johsens graduated from medical school in 1993, 33 years ago.
What insurance does Dr. Karl Knudsen Johsens accept?
Dr. Johsens is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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