Paul R. Omastiak, MD
Family Medicine Physician · Oak Lawn, IL
Paul R. Omastiak, MD is a family medicine physician with a practice address in Oak Lawn, Illinois, and NPI 1821020124, issued on Jul 7, 2006. Check the license (Illinois 036070593, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Paul R. Omastiak
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036070593 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4301 W 95TH Street, Oak Lawn, IL 60453
- Phone
- (708) 425-5500
- Enumerated
- Jul 7, 2006
- Record last updated
- Dec 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (708) 425-0771
- Medicaid ID
- 036070593 IL
- Medicare enrollment
- Enrolled (PECOS I20100122000224); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 4301 W 95TH Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Hosso-Cooper, DOInternal Medicine Physician1801820691
- Emelie Ilarde, MDFamily Medicine Physician1639194137
- Gary Stuck, DOFamily Medicine Physician1609800481
- Diana Zamojski, DOFamily Medicine Physician1861424244
Verify Paul R. Omastiak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036070593Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average family medicine physician in 2024
4,204 Medicare Part D claims for 334 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 76 claims were for opioids.
Most prescribed
- Atorvastatin Calcium455 claims
- Amlodipine Besylate289 claims
- Metformin Hcl207 claims
- Losartan Potassium198 claims
- Levothyroxine Sodium171 claims
- Lisinopril139 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: $1,382.33
71 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- Lawn Medical Center, S.C.Oak Lawn, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Paul R. Omastiak among 6,215 family medicine physician records in Illinois
Paul R. Omastiak, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1981 · median 2006 among the 3,714 with a school on file
- Record last updated2021 · 54% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
71 family medicine physician records list a practice address in Oak Lawn
They are 71 of the 2,993 NPPES records with a practice address in Oak Lawn, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Oak Lawn → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sangili Chandran, M.D.Oak Lawn, IL 604531790705663
- Jarom Daszko, M.D.Oak Lawn, IL 604531487674693
- Emelie Ilarde, MDOak Lawn, IL 604531639194137
- Anastacia Largosa, M.D.Oak Lawn, IL 604531750329835
- Cynthia Ohata, M.D.Oak Lawn, IL 604531912949025
- Michael Olivieri, M.D.Oak Lawn, IL 604531124042189
- Warren Robinson, MDOak Lawn, IL 604531114037967
- Surinder Sahajpal, M.D.Oak Lawn, IL 604531467419127
Common questions
What is Paul R. Omastiak, MD's NPI number?
Paul R. Omastiak, MD's National Provider Identifier (NPI) is 1821020124, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Paul R. Omastiak, MD located?
The NPPES record lists a practice address at 4301 W 95TH Street, Oak Lawn, IL, 60453. Phone: (708) 425-5500. Providers update this record themselves, so call before visiting.
How can I verify Paul R. Omastiak, MD's license?
NPPES lists Illinois license number 036070593, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Paul R. Omastiak, MD prescribe under Medicare Part D?
In 2024, Paul R. Omastiak, MD had 4,204 Medicare Part D claims for 334 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.