NPPES file of Aug 9, 2026

Thaddeus G. Zawislak, D.M.D.

General Practice Dentistry · Oil City, PA

Thaddeus G. Zawislak, D.M.D. is a general practice dentistry with a practice address in Oil City, Pennsylvania, and NPI 1063499986, issued on Dec 30, 2005. Check the license (Pennsylvania DS026933L, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063499986
Name
Thaddeus G. Zawislak
Credential
D.M.D.
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
DS026933L PA
Self-reported in NPPES; status is on the state search
Practice location
161 E Bissell Ave, Oil City, PA 16301
Phone
(814) 677-1341
Enumerated
Dec 30, 2005
Record last updated
Aug 11, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(814) 676-6627
Medicaid ID
0011797170002 PA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest general practice dentistry records → All 4,612 in Pennsylvania → Look up another NPI →

Verify Thaddeus G. Zawislak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license DS026933L    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Pennsylvania license search

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16% more Medicare Part D claims than the average general practice dentistry in 2024

96 Medicare Part D claims for 69 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. Thaddeus Zawislak96
  2. Specialty average83

Most prescribed

  1. Amoxicillin58 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.

Thaddeus G. Zawislak among 4,612 general practice dentistry records in Pennsylvania

Thaddeus G. Zawislak, D.M.D. is one of 4,612 general practice dentistry records with a practice address in Pennsylvania. 63% 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, 96% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2014 · 76% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2 general practice dentistry records list a practice address in Oil City

They are 2 of the 182 NPPES records with a practice address in Oil City, and 4,612 general practice dentistry records in Pennsylvania.

All 4,612 in Pennsylvania → Every provider in Oil City → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Samuel Shialabba, DMDOil City, PA 163011710063433
  2. Paul Foulk, DMDConneaut Lake, PA 163161275516619
  3. Thomas Fox, DMDConneaut Lake, PA 163161134216443
  4. Joseph Zeitler, DMDCranberry, PA 163191679659908
  5. John Estok, DMDFranklin, PA 163231760586788
  6. Mark Gammello, D.M.D.Franklin, PA 163231487702528
  7. Thomas Wilks, D.M.D.Franklin, PA 163231407946817
  8. Todd Bailey, DDSMeadville, PA 163351447325899

Common questions

What is Thaddeus G. Zawislak, D.M.D.'s NPI number?

Thaddeus G. Zawislak, D.M.D.'s National Provider Identifier (NPI) is 1063499986, issued on Dec 30, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Thaddeus G. Zawislak, D.M.D. located?

The NPPES record lists a practice address at 161 E Bissell Ave, Oil City, PA, 16301. Phone: (814) 677-1341. Providers update this record themselves, so call before visiting.

How can I verify Thaddeus G. Zawislak, D.M.D.'s license?

NPPES lists Pennsylvania license number DS026933L, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

How much does Thaddeus G. Zawislak, D.M.D. prescribe under Medicare Part D?

In 2024, Thaddeus G. Zawislak, D.M.D. had 96 Medicare Part D claims for 69 beneficiaries; the average among general practice dentistry prescribers was 83. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.