Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marek M Pienkowski, M.D., PH.D.
Allergy Physician in Knoxville, TN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659340610
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Registry record
Entity type Individual (Type 1)
Name Dr. Marek M Pienkowski
Credential M.D., PH.D.
Sex Male
Practice address 7417 Kingston Pike, Suite 101, Knoxville, TN, 37919
Phone (865) 584-4112
Fax (865) 588-5140
Enumeration date Mar 14, 2006
Last updated in NPPES Nov 12, 2013
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0202905 | Other | TN | BCBSTN |
| 059803 | Other | VA | BCBSVA |
| 0030601 | Other | TN | BCBSTN |
| 3006456 | Medicaid | TN | - |
| 067080 | Other | VA | BCBSVA |
| 3006457 | Medicaid | TN | - |
| 0056936 | Other | TN | BCBSTN |
| 0166234 | Other | TN | BCBSTN |
| 064686 | Other | VA | BCBSVA |
| 3006458 | Medicaid | TN | - |
| 30065459 | Medicaid | TN | - |
| 2004413 | Other | TN | BCBSTN |
| 3006450 | Medicaid | TN | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
How do I verify Marek Pienkowski's NPI record?
Cross-check NPI 1659340610 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1659340610 active?
Yes, as of the latest NPPES snapshot, NPI 1659340610 is active (record last updated 2013-11-12).
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-12.