K. Erik Kostelnik, M.D.
NPI 1346289683 · Dermatology Physician · Portland, ME
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
K. Erik Kostelnik, M.D. is a Dermatology Physician provider in Portland, ME (NPI 1346289683).
Provider details
- NPI number
- 1346289683
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 014713 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,154 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 973 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 599 | $93 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 469 | $58 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 282 | $58 |
| Biopsy of Related Skin Growth, First Growth11102 | 197 | $97 |
| Destruction of Skin Growth, 1-14 Growths |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 274 | 151 |
| Fluorouracil | 107 | 100 |
| Fluocinonide | 60 | 40 |
| Doxycycline Hyclate | 56 | 20 |
| Ketoconazole | 55 | 39 |
| Valacyclovir Hclbrand: Valacyclovir | 50 | 18 |
| Betamethasone/Propylene Glycbrand: Betamethasone Diprop Augmented | 49 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-05
- Last updated
- 2008-10-16
Frequently asked questions
- What is K. Erik Kostelnik's NPI number?
- K. Erik Kostelnik's National Provider Identifier (NPI) is 1346289683, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is K. Erik Kostelnik's specialty?
- K. Erik Kostelnik is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is K. Erik Kostelnik located?
- K. Erik Kostelnik's practice location on file with NPPES is 50 Sewall St, Portland, ME 04102-2624.
- What is K. Erik Kostelnik's phone number?
- The practice phone number listed in the NPPES registry for K. Erik Kostelnik is (207) 775-3526.
- Does K. Erik Kostelnik accept Medicare?
- K. Erik Kostelnik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is K. Erik Kostelnik's NPI active?
- Yes — K. Erik Kostelnik's NPI (1346289683) is active in the NPPES registry as of the last update on 2008-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.