Jack Pieniazek, DO
Family Medicine Physician · Conroe, TX
Jack Pieniazek, DO is a family medicine physician with a practice address in Conroe, Texas, and NPI 1164426870, issued on Jun 9, 2005. Check the license (Texas K0541, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jack Pieniazek
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- K0541 TX
Self-reported in NPPES; status is on the state search - Practice location
- 690 S Loop 336 W, Conroe, TX 77304
- Phone
- (936) 756-6661
- Enumerated
- Jun 9, 2005
- Record last updated
- Jun 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (936) 756-6681
- Medicaid ID
- 043624803 TX
- Medicare enrollment
- Enrolled (PECOS I20040802001568); accepts Medicare assignment
- Medical or professional school
- University Of North Texas Hsc, College Of Osteopathic Med, 1995
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 690 S Loop 336 W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Steven Gates, D.O.Geriatric Medicine (Internal Medicine) Physician1184602443
Verify Jack Pieniazek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K0541Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average family medicine physician in 2024
6,228 Medicare Part D claims for 694 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 36 claims were for opioids.
Most prescribed
- Atorvastatin Calcium470 claims
- Levothyroxine Sodium277 claims
- Amlodipine Besylate235 claims
- Gabapentin214 claims
- Lisinopril189 claims
- Rosuvastatin Calcium152 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.
Industry payments in 2024: $121.67
1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Kelsey-Seybold Medical Group, PLLCShenandoah, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jack Pieniazek among 11,119 family medicine physician records in Texas
Jack Pieniazek, DO is one of 11,119 family medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1995 · median 2004 among the 7,095 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
96 family medicine physician records list a practice address in Conroe
They are 96 of the 2,448 NPPES records with a practice address in Conroe, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Conroe → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christopher Chapman, MDConroe, TX 773041164426888
- Elena Garcia, MD.Conroe, TX 773041750375150
- Gregg Hallbauer, DOConroe, TX 773041922007343
- Samantha Hinds-CampaConroe, TX 773041083618797
- Lata Joshi, M.D.Conroe, TX 773041629077045
- Kara Kern, M.D.Conroe, TX 773041811984321
- Stephen McKernan, D.O.Conroe, TX 773041407855547
- Maribeth Moore, D.O.Conroe, TX 773041376530758
Common questions
What is Jack Pieniazek, DO's NPI number?
Jack Pieniazek, DO's National Provider Identifier (NPI) is 1164426870, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jack Pieniazek, DO located?
The NPPES record lists a practice address at 690 S Loop 336 W, Conroe, TX, 77304. Phone: (936) 756-6661. Providers update this record themselves, so call before visiting.
How can I verify Jack Pieniazek, DO's license?
NPPES lists Texas license number K0541, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jack Pieniazek, DO prescribe under Medicare Part D?
In 2024, Jack Pieniazek, DO had 6,228 Medicare Part D claims for 694 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.