Marek Pienkowski, M.D., PH.D.
NPI 1659340610 · Allergy Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marek Pienkowski, M.D., PH.D. is a Allergy Physician provider in Knoxville, TN (NPI 1659340610).
Provider details
- NPI number
- 1659340610
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD15320 (TN)
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
30,890 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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 21,058 | $13 |
| Test for Allergy Using Allergenic Extract95004 | 5,983 | $3 |
| Professional Service for Multiple Injections of Allergen95117 | 3,125 | $11 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 441 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 87 | $117 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 72 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 56 | 17 |
| Omalizumabbrand: Xolair | 45 | — |
| Montelukast Sodium | 45 | 13 |
| Fluticasone Propionate | 26 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 23 | — |
| Colchicine | 21 | — |
| Levocetirizine Dihydrochloride | 21 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2013-11-12
Frequently asked questions
- What is Marek Pienkowski's NPI number?
- Marek Pienkowski's National Provider Identifier (NPI) is 1659340610, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marek Pienkowski's specialty?
- Marek Pienkowski is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Marek Pienkowski located?
- Marek Pienkowski's practice location on file with NPPES is 7417 Kingston Pike, Knoxville, TN 37919-5606.
- What is Marek Pienkowski's phone number?
- The practice phone number listed in the NPPES registry for Marek Pienkowski is (865) 584-4112.
- Does Marek Pienkowski accept Medicare?
- Marek Pienkowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marek Pienkowski's NPI active?
- Yes — Marek Pienkowski's NPI (1659340610) is active in the NPPES registry as of the last update on 2013-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.