Dr. Karen Joy Sundby, MD
- Medicare services, 2024
- 6,781
- Medicare patients, 2024
- 1,047
- Part D claims, 2024
- 1,001
- MIPS score, 2024
- 94
- Industry payments
- $242
- Practice address
- 4700 Hale Pkwy, Denver, CO 80220
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rose Surgical Center - HOPD
Acute Care Hospital outpatient department · Denver, Colorado
Find Dr. Sundby's professional email, personal email and mobile number
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Dr. Karen Joy Sundby is a mohs-micrographic surgery physician in Denver, Colorado
Dr. Sundby practices at Rose Surgical Center - HOPD in Denver, Colorado.
Dr. Sundby's NPI, 1912977083, was assigned on January 23, 2006. Dr. Sundby graduated from University of Colorado School of Medicine, Denver in 2000. Dr. Sundby holds Colorado license 41658.
- NPI
- 1912977083NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507893823
- NPI enumeration date
- January 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen Joy Sundby practices at Rose Surgical Center - HOPD in Denver, Colorado
Dr. Sundby's primary practice is Rose Surgical Center - HOPD, at 4700 Hale Pkwy, Denver, CO 80220.
- Rose Surgical Center - HOPD4700 Hale Pkwy, Denver, CO 80220
Source: Dmand AI Affiliation Data
Dr. Karen Joy Sundby is affiliated with 2 sites of care
Dr. Sundby's primary practice is Rose Surgical Center - HOPD in Denver, Colorado. Dmand AI also links Dr. Sundby to 1 physician office, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Karen Joy Sundby's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sundby practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rose Surgical Center - HOPD | 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. Karen Joy Sundby is one of 33 mohs-micrographic surgery physicians in Colorado
Mohs-micrographic surgery is Dr. Sundby's primary specialty in the NPI Registry, under taxonomy code 207ND0101X. Dr. Sundby is licensed in Colorado.
Specialties and state licenses
- Mohs-micrographic surgery, ColoradoPrimary
Mohs-micrographic surgery physicians near Dr. Sundby
Counts of mohs-micrographic surgery 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 Joy Sundby billed Medicare for 6,781 services in 2024
CMS data shows 6,781 Medicare services from Dr. Sundby across 35 procedure codes in 2024, for 1,047 Medicare patients. Medicare paid $914,007 for them. Every service was in an office.
Dr. Sundby's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 5,1932024: 4,35316%
- Office and hospital visits
- 2023: 1,9522024: 2,0053%
- Drugs given in the office
- 2023: 2022024: 22511%
- Lab and pathology
- 2023: 1882024: 15816%
- Tests and treatments
- 2023: 302024: 4033%
Dr. Sundby compared with the Colorado median for mohs-micrographic surgery physicians, 2024
- Dr. Sundby
- Colorado median
- Medicare services
- 6,781vs 1,6204.2 times
- Medicare patients
- 1,047vs 4622.3 times
- Part D claims
- 939vs 1625.8 times
Medians across 33 mohs-micrographic surgery physicians in Colorado with Dmand AI profiles that report each measure.
Dr. Sundby's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sundby and other mohs-micrographic surgery physicians in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen Joy Sundby treated 1,047 Medicare patients in 2024, average age 77
CMS counts 1,047 Medicare patients who saw Dr. Sundby in 2024. The largest group is 75 to 84, with 485 patients. 68% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sundby's median patient age at 74, with 49% women.
Dr. Sundby's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Sundby's Medicare patients by sex, 2024
- Women51449%
- Men53351%
Chronic conditions among Dr. Sundby's Medicare patients, 2024
- High cholesterol68%
- High blood pressure60%
- Arthritis44%
- Ischemic heart disease23%
- Osteoporosis19%
- Cancer18%
- Chronic kidney disease18%
- Atrial fibrillation16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sundby's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen Joy Sundby wrote 1,001 Medicare Part D claims in 2024
In 2024, Dr. Sundby wrote 1,001 Medicare Part D claims for 612 patients. 100% of them were for generic drugs. CMS names the drug for 939 of them, across 9 drugs with 11 or more claims each, at $5,913 in total drug cost. In 2023, CMS named 891 claims across 8 drugs.
Dr. Sundby's 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. Sundby's Part D claims, 2024
- Opioids54%540 of 1,001 claims
- Antibiotics31%310 of 1,001 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: 8912024: 9395%
Drugs named by CMS: 9 in 2024, 8 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. Karen Joy Sundby scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Sundby for performance year 2024, reported individually. Dr. Sundby accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 133 procedures of melanoma (skin cancer) excision by Dr. Sundby, more than 95% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Sundby's MIPS scores, performance year 2024
- 94of 100Final score
- 89.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Sundby ranks in Medicare procedure volume
- Removal of skin cancer
- 83rd percentile936 procedures
- Removal of skin lesions
- 92nd percentile896 procedures
- Skin biopsy
- 92nd percentile344 procedures
- Melanoma (skin cancer) excision
- 95th percentile133 procedures
- Removal of tissue
- 71st percentile25 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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. Karen Joy Sundby received $242 in industry payments from 2016 to 2025
CMS Open Payments shows 6 general payments to Dr. Sundby from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Galderma Laboratories, L.P. paid the most, $172.
General payments to Dr. Sundby by program year, 2016 to 2025
Companies that paid Dr. Sundby the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karen Joy Sundby graduated from University of Colorado School of Medicine, Denver
Dr. Sundby graduated from University of Colorado School of Medicine, Denver in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Karen Joy Sundby'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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. Karen Joy Sundby
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 Joy Sundby's NPI number?
Dr. Karen Joy Sundby's NPI number is 1912977083. It was assigned on January 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Joy Sundby?
Dr. Karen Joy Sundby is a mohs-micrographic surgery physician in Denver, Colorado. The primary specialty in the NPI Registry is MOHS-Micrographic Surgery Physician (taxonomy code 207ND0101X).
Where does Dr. Karen Joy Sundby practice?
Dr. Sundby practices at 4700 Hale Pkwy, Denver, CO 80220. Dr. Sundby's primary practice is Rose Surgical Center - HOPD in Denver, Colorado. Dmand AI also links Dr. Sundby to 1 physician office.
What is Dr. Karen Joy Sundby's medical license number?
Dr. Sundby holds Colorado license 41658.
Does Dr. Karen Joy Sundby accept Medicare?
Yes. CMS data shows Dr. Sundby billed Medicare for 6,781 services in 2024, and Dr. Sundby accepts Medicare assignment.
What is Dr. Karen Joy Sundby's MIPS score?
Dr. Sundby's MIPS final score for performance year 2024 is 94 out of 100, reported individually.
How many Medicare patients does Dr. Karen Joy Sundby see?
CMS counts 1,047 Medicare patients who saw Dr. Sundby in 2024, with an average age of 77.
What services does Dr. Karen Joy Sundby bill to Medicare?
In 2024, Dr. Sundby's most billed Medicare services were surgery: skin and soft tissue (17003), office visit, established patient (99214) and surgery: skin and soft tissue (17311).
Where did Dr. Karen Joy Sundby go to medical school?
Dr. Sundby graduated from University of Colorado School of Medicine, Denver in 2000.
What drugs does Dr. Karen Joy Sundby prescribe most?
In 2024 Medicare Part D data, Dr. Sundby's most prescribed drugs by claims were Tramadol HCl, Cephalexin and Hydrocodone-Acetaminophen.
Has Dr. Karen Joy Sundby received payments from drug or device companies?
CMS Open Payments shows $242 in general payments to Dr. Sundby from 3 companies from 2016 to 2025. The largest total came from Galderma Laboratories, L.P.
How long has Dr. Karen Joy Sundby been practicing?
Dr. Sundby graduated from medical school in 2000, 26 years ago.
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