Karen Sundby, M.D.
NPI 1912977083 · MOHS-Micrographic Surgery Physician · Denver, CO
Enrolled with Medicare as Practitioner - Micrographic Dermatologic Surgery (mds) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Sundby, M.D. is a MOHS-Micrographic Surgery Physician provider in Denver, CO (NPI 1912977083).
Provider details
- NPI number
- 1912977083
- Entity type
- Individual
- Primary specialty
- MOHS-Micrographic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 41658 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,556 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,548 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 897 | $132 |
| Removal and Microscopic Exam of Growth of Head, Neck, Hands, Feet, Or Genitals, 1-5 Tissue Blocks17311 | 589 | $650 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 449 | $56 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 428 | $94 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tramadol Hcl | 303 | 286 |
| Cephalexin | 246 | 235 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 184 | 157 |
| Triamcinolone Acetonide | 70 | 49 |
| Doxycycline Hyclate | 58 | 45 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 43 | 39 |
| Doxycycline Monohydrate | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-23
- Last updated
- 2025-05-06
- Certified
- 2025-05-06
Frequently asked questions
- What is Karen Sundby's NPI number?
- Karen Sundby's National Provider Identifier (NPI) is 1912977083, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Sundby's specialty?
- Karen Sundby is listed in the NPPES registry with a primary specialty of MOHS-Micrographic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Sundby located?
- Karen Sundby's practice location on file with NPPES is 4700 Hale Pkwy, Denver, CO 80220-4050.
- What is Karen Sundby's phone number?
- The practice phone number listed in the NPPES registry for Karen Sundby is (303) 388-8807.
- Does Karen Sundby accept Medicare?
- Karen Sundby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Sundby's NPI active?
- Yes — Karen Sundby's NPI (1912977083) is active in the NPPES registry as of the last update on 2025-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.