Karen Joy Sundby, M.D.
MOHS-Micrographic Surgery Physician · Denver, CO
Karen Joy Sundby, M.D. is a mohs-micrographic surgery physician with a practice address in Denver, Colorado, and NPI 1912977083, issued on Jan 23, 2006. Check the license (Colorado 41658, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Karen Joy Sundby
- Credential
- M.D.
- Primary taxonomy
- MOHS-Micrographic Surgery Physician 207ND0101X
- License number
- 41658 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4700 Hale Pkwy, Denver, CO 80220
- Phone
- (303) 388-8807
- Enumerated
- Jan 23, 2006
- Record last updated
- May 6, 2025
- Fax
- (720) 360-0181
- Medicare enrollment
- Enrolled (PECOS I20060417000173); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 2000
- Entity
- Type 1 · individual
8 nearest mohs-micrographic surgery physician records → All 40 in Colorado → Look up another NPI →
Also registered at 4700 Hale Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Abrams, M.D.Internal Medicine Physician1174645386
- Corinne Aufmann, PA-CPhysician Assistant1457703803
- Jennifer Gaudiani, MDInternal Medicine Physician1831172063
- Brian Larkin, MDAdult Reconstructive Orthopaedic Surgery Physician1598976490
- Sommer Moreno, OTOccupational Therapist1184375131
- Heather Palmer, RNRegistered Nurse1528468790
Verify Karen Joy Sundby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 41658Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average mohs-micrographic surgery physician in 2024
1,001 Medicare Part D claims for 612 beneficiaries, against an average of 570 among the 1,396 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 540 claims were for opioids.
Most prescribed
- Tramadol Hcl303 claims
- Cephalexin246 claims
- Hydrocodone-Acetaminophen184 claims
- Triamcinolone Acetonide70 claims
- Doxycycline Hyclate58 claims
- Oxycodone-Acetaminophen43 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 MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $34.59
2 payments; by number, the most common kind was food and beverage; the largest payer was Mimedx Group, Inc. The 1,074 providers of this specialty with any payment received $4,075.23 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.
Karen Joy Sundby among 40 mohs-micrographic surgery physician records in Colorado
Karen Joy Sundby, M.D. is one of 40 mohs-micrographic surgery physician records with a practice address in Colorado. 100% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 63% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 98% of these records are
- Graduated2000 · median 2005 among the 39 with a school on file
- Record last updated2025 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ND0101X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
MOHS-Micrographic Surgery Physician providers in Colorado
There are 40 mohs-micrographic surgery physician records in Colorado.
All 40 in Colorado → Every provider in Denver → MOHS-Micrographic Surgery Physician nationwide →
The 8 mohs-micrographic surgery physician records with the nearest ZIP codes
- Mary Brady, M.D.Lakewood, CO 802271922486695
- Kimberly Shao, MDLakewood, CO 802281891282547
- Sarah Basak, M.D.Lakewood, CO 802321255643813
- Anastasia Benoit, M.D.Westminster, CO 802341063708709
- Jessica Olander, MDWestminster, CO 802341659515658
- Milton Schleve, M.D.Denver, CO 802051316994965
- Misha Miller, MDDenver, CO 802041194802371
- Samantha Ghiselli, M.D.Glendale, CO 802461942212857
Common questions
What is Karen Joy Sundby, M.D.'s NPI number?
Karen Joy Sundby, M.D.'s National Provider Identifier (NPI) is 1912977083, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Joy Sundby, M.D. located?
The NPPES record lists a practice address at 4700 Hale Pkwy, Denver, CO, 80220. Phone: (303) 388-8807. Providers update this record themselves, so call before visiting.
How can I verify Karen Joy Sundby, M.D.'s license?
NPPES lists Colorado license number 41658, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Joy Sundby, M.D. prescribe under Medicare Part D?
In 2024, Karen Joy Sundby, M.D. had 1,001 Medicare Part D claims for 612 beneficiaries; the average among mohs-micrographic surgery physician prescribers was 570. Part D covers Medicare prescriptions only.
What is Karen Joy Sundby, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.