Katherine Januszewicz, MD
Emergency Medicine Physician · Las Vegas, NV
Katherine Januszewicz, MD is an emergency medicine physician with a practice address in Las Vegas, Nevada, and NPI 1255795290, issued on Apr 6, 2016. Check the license (Nevada 20016, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Katherine Januszewicz
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20016 NV
Self-reported in NPPES; status is on the state search - Practice location
- 3186 S Maryland Pkwy, Las Vegas, NV 89109
- Phone
- (702) 961-5000
- Enumerated
- Apr 6, 2016
- Record last updated
- Jul 28, 2025
- Medicare enrollment
- Enrolled (PECOS I20201012002435); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 575 in Nevada → Look up another NPI →
Also registered at 3186 S Maryland Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arash Albekord, M.D.Emergency Medicine Physician1023391026
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- Abdulla M Shereef Ali, MDNeurocritical Care Physician1396307724
- Mohammed AlnaherInternal Medicine Physician1396468344
- Oscar Alonso Oduardo, APRNNurse Practitioner1831775071
- Umar Ansari, DOStudent in an Organized Health Care Education/Training Program1306309216
Verify Katherine Januszewicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 20016Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average emergency medicine physician in 2024
294 Medicare Part D claims for 167 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 32 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass23 claims
- Cefdinir23 claims
- Albuterol Sulfate Hfa16 claims
- Azithromycin16 claims
- Hydrocodone-Acetaminophen15 claims
- Methylprednisolone15 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.
Bills Medicare through 2 group practices
- Fremont Emergency Services Scherr LtdLas Vegas, NV
- Shadow Emergency Physicians PLLCLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Januszewicz among 575 emergency medicine physician records in Nevada
Katherine Januszewicz, MD is one of 575 emergency medicine physician records with a practice address in Nevada. 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 2016, is newer than 66% of them.
- NPI issued2016 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2016 · median 2014 among the 366 with a school on file
- Record last updated2025 · 45% 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 Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Nevada
There are 575 emergency medicine physician records in Nevada.
All 575 in Nevada → Every provider in Las Vegas → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Arash Albekord, M.D.Las Vegas, NV 891091023391026
- Willis Chang, M.D.Las Vegas, NV 891091609253103
- Christopher Cheng, M.D.Las Vegas, NV 891091508946427
- John Jobes, DOLas Vegas, NV 891091073992079
- Charles Lin, M.D.Las Vegas, NV 891091194131854
- Mark Macedo, D.O.Las Vegas, NV 891091114286077
- Roya Mahana, D.O.Las Vegas, NV 891091033573589
- Jared MartinLas Vegas, NV 891091649569583
Common questions
What is Katherine Januszewicz, MD's NPI number?
Katherine Januszewicz, MD's National Provider Identifier (NPI) is 1255795290, issued on Apr 6, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Januszewicz, MD located?
The NPPES record lists a practice address at 3186 S Maryland Pkwy, Las Vegas, NV, 89109. Phone: (702) 961-5000. Providers update this record themselves, so call before visiting.
How can I verify Katherine Januszewicz, MD's license?
NPPES lists Nevada license number 20016, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Januszewicz, MD prescribe under Medicare Part D?
In 2024, Katherine Januszewicz, MD had 294 Medicare Part D claims for 167 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.