Iryna M. Muzyka, MD
Neurology Physician · Scottsdale, AZ
Iryna M. Muzyka, MD is a neurology physician with a practice address in Scottsdale, Arizona, and NPI 1649478306, issued on Jul 4, 2007. Check the license (Arizona 52813, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Iryna M. Muzyka
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 52813 AZ
151659 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 13400 E Shea Blvd, Scottsdale, AZ 85259
- Phone
- (480) 301-8000
- Enumerated
- Jul 4, 2007
- Record last updated
- Sep 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161229002050); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 458 in Arizona → Look up another NPI →
Also registered at 13400 E Shea Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Iryna M. Muzyka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 52813Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average neurology physician in 2024
200 Medicare Part D claims for 34 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Riluzole45 claims
- Radicava Ors44 claims
- Baclofen21 claims
- Gabapentin20 claims
- Relyvrio16 claims
- Atropine Sulfate11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $108.60
1 payment: food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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
- Mayo Clinic ArizonaScottsdale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Iryna M. Muzyka among 458 neurology physician records in Arizona
Iryna M. Muzyka, MD is one of 458 neurology physician records with a practice address in Arizona. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 48% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1999 · median 2005 among the 298 with a school on file
- Record last updated2020 · 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 2084N0400X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Arizona
There are 458 neurology physician records in Arizona.
All 458 in Arizona → Every provider in Scottsdale → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Charles Adler, M.D.Scottsdale, AZ 852591023091022
- Erich Bosch, M.D.Scottsdale, AZ 852591447233150
- Jonathan Carter, M.D.Scottsdale, AZ 852591851377378
- Richard Caselli, M.D.Scottsdale, AZ 852591568444255
- John Caviness, M.D.Scottsdale, AZ 852591932182268
- Erika Driver-Dunckley, M.D.Scottsdale, AZ 852591881678480
- Sanford Fineman, MDScottsdale, AZ 852591720067853
- Rashmi Halker Singh, M.D.Scottsdale, AZ 852591508895582
Common questions
What is Iryna M. Muzyka, MD's NPI number?
Iryna M. Muzyka, MD's National Provider Identifier (NPI) is 1649478306, issued on Jul 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Iryna M. Muzyka, MD located?
The NPPES record lists a practice address at 13400 E Shea Blvd, Scottsdale, AZ, 85259. Phone: (480) 301-8000. Providers update this record themselves, so call before visiting.
How can I verify Iryna M. Muzyka, MD's license?
NPPES lists Arizona license number 52813, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Iryna M. Muzyka, MD prescribe under Medicare Part D?
In 2024, Iryna M. Muzyka, MD had 200 Medicare Part D claims for 34 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Iryna M. Muzyka, MD's MIPS final score?
The 2023 MIPS final score is 78.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.