Nicholas Edward Mazur, D.O.
Emergency Medicine Physician · Hammond, IN
Nicholas Edward Mazur, D.O. is an emergency medicine physician with a practice address in Hammond, Indiana, and NPI 1134419765, issued on Apr 16, 2011. Check the license (Indiana 02004584A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Nicholas Edward Mazur
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 02004584A IN
Self-reported in NPPES; status is on the state search - Practice location
- 5454 Hohman Ave, Hammond, IN 46320
- Phone
- (219) 933-2077
- Enumerated
- Apr 16, 2011
- Record last updated
- Jun 25, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,293 in Indiana → Look up another NPI →
Also registered at 5454 Hohman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Almaz Abdyrakov, M.D.Internal Medicine Physician1407102338
- Rashmi Aggarwal, MDPediatrics Physician1912995820
- Alaa AtiehGastroenterology Physician1609290246
- Martha Bartkus, NPFamily Nurse Practitioner1871268953
- Theodore Barzso, D.O.Emergency Medicine Physician1861623365
- Loretta Beier, CRNACertified Registered Nurse Anesthetist1699762294
Verify Nicholas Edward Mazur in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 02004584ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% more Medicare Part D claims than the average emergency medicine physician in 2024
352 Medicare Part D claims for 229 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 79 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen50 claims
- Cephalexin40 claims
- Ondansetron Odt28 claims
- Prednisone28 claims
- Doxycycline Hyclate18 claims
- Naproxen17 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: $23.50
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 12,335 providers of this specialty with any payment received $953.79 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.
Nicholas Edward Mazur among 1,293 emergency medicine physician records in Indiana
Nicholas Edward Mazur, D.O. is one of 1,293 emergency medicine physician records with a practice address in Indiana. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 61% of them.
- NPI issued2011 · 61% of these records are older, 37% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2015 · 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 207P00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 emergency medicine physician records list a practice address in Hammond
They are 17 of the 369 NPPES records with a practice address in Hammond, and 1,293 emergency medicine physician records in Indiana.
All 1,293 in Indiana → Every provider in Hammond → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Theodore Barzso, D.O.Hammond, IN 463201861623365
- Eric Cook, DOHammond, IN 463201295728871
- John Desalvo, DOHammond, IN 463201336134402
- Grace Duarte, DOHammond, IN 463201518952043
- John Havlick, DOHammond, IN 463201780677351
- Joseph Knight, DOHammond, IN 463201346234861
- Eric Moon, D.O.Hammond, IN 463201942200027
- Prakash Rattan, MDHammond, IN 463201508851676
Common questions
What is Nicholas Edward Mazur, D.O.'s NPI number?
Nicholas Edward Mazur, D.O.'s National Provider Identifier (NPI) is 1134419765, issued on Apr 16, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Edward Mazur, D.O. located?
The NPPES record lists a practice address at 5454 Hohman Ave, Hammond, IN, 46320. Phone: (219) 933-2077. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Edward Mazur, D.O.'s license?
NPPES lists Indiana license number 02004584A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nicholas Edward Mazur, D.O. prescribe under Medicare Part D?
In 2024, Nicholas Edward Mazur, D.O. had 352 Medicare Part D claims for 229 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.