John J. Pieniazek, M.D.
Family Medicine Physician · Red Lake, MN
John J. Pieniazek, M.D. is a family medicine physician with a practice address in Red Lake, Minnesota, and NPI 1740360163, issued on Oct 17, 2006. Check the license on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- John J. Pieniazek
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 336-072015 IL
Self-reported in NPPES; status is on the state search - Practice location
- Hwy 1, Red Lake, MN 56671
- Phone
- (218) 679-3912
- Enumerated
- Oct 17, 2006
- Record last updated
- Feb 29, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (218) 679-0181
- Entity
- Type 1 · individual
Also registered at Hwy 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jill Breyen, RD,LDRegistered Dietitian1952475063
- John Dick, MSWMental Health Counselor1073716023
- Kristin Hamlin-Passes, APRN,BCPsychiatric/Mental Health Nurse Practitioner1942228135
- Mary Mackey, PHARMDPharmacist1376515049
- Kimberly Zietlow, PHARM.D.Pharmacotherapy Pharmacist1740253293
Verify John J. Pieniazek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical PracticeCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family medicine physician in 2024
286 Medicare Part D claims for 161 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Cephalexin50 claims
- Famotidine16 claims
- Azithromycin14 claims
- Hydrocodone-Acetaminophen14 claims
- Prochlorperazine Maleate13 claims
- Amoxicillin11 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.
3 family medicine physician records list a practice address in Red Lake
They are 3 of the 91 NPPES records with a practice address in Red Lake, and 3,985 family medicine physician records in Minnesota.
All 3 in Red Lake → All 3,985 in Minnesota → Every provider in Red Lake →
Other family medicine physician records in Minnesota
- Allison AaseMinneapolis, MN1255028239
- Lise Aasheim, M.D.Albert Lea, MN1871571851
- Cherry Abary, D.O.Eden Prairie, MN1821019712
- Jihan Abbott, D.O.Woodbury, MN1306138870
- Andrea Abcejo, MDByron, MN1700143153
- Mona Abdel-Bary, MBBCHFridley, MN1689067860
- Yasmin Abdulaya, MDSaint Cloud, MN1437892536
- Bangean Abdullah, MDCoon Rapids, MN1952363137
- Ryan Aberle, MDRobbinsdale, MN1639732928
- Gregory Abler, MDMorris, MN1609889740
Common questions
What is John J. Pieniazek, M.D.'s NPI number?
John J. Pieniazek, M.D.'s National Provider Identifier (NPI) is 1740360163, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John J. Pieniazek, M.D. located?
The NPPES record lists a practice address at Hwy 1, Red Lake, MN, 56671. Phone: (218) 679-3912. Providers update this record themselves, so call before visiting.
How can I verify John J. Pieniazek, M.D.'s license?
Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John J. Pieniazek, M.D. prescribe under Medicare Part D?
In 2024, John J. Pieniazek, M.D. had 286 Medicare Part D claims for 161 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.