Kellyann Mazich
Physician Assistant · Oceanside, NY
Kellyann Mazich is a physician assistant with a practice address in Oceanside, New York, and NPI 1649905704, issued on Jul 21, 2022. Check the license with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kellyann Mazich
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 1 Healthy Way, Oceanside, NY 11572
- Phone
- (516) 632-3900
- Enumerated
- Jul 21, 2022
- Record last updated
- Jul 6, 2026
- Medicare enrollment
- Enrolled (PECOS I20250220003007); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 15,555 in New York → Look up another NPI →
Also registered at 1 Healthy Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Geraldine Abbey-Mensah, M.D.Vascular & Interventional Radiology Physician1447530167
- Gabrielle Abbott, PAPhysician Assistant1669158036
- Batool Abiad, DOStudent in an Organized Health Care Education/Training Program1932040359
- Wray AdamsCertified Registered Nurse Anesthetist1548598675
- Anubhav Agarwal, MDSports Medicine (Family Medicine) Physician1568709244
- Brody Agres, PA-CMedical Physician Assistant1689470502
Verify Kellyann Mazich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average physician assistant in 2024
412 Medicare Part D claims for 198 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium28 claims
- Levothyroxine Sodium19 claims
- Rosuvastatin Calcium18 claims
- Cephalexin15 claims
- Pantoprazole Sodium15 claims
- Cefdinir13 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 MIPS final score for 2023 (Medicare payment program): 94.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $255.50
7 payments; by number, the most common kind was food and beverage; the largest payer was Integra LifeSciences Corporation. The 64,719 providers of this specialty with any payment received $841.65 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
- South Nassau Physician Group PCOceanside, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kellyann Mazich among 15,555 physician assistant records in New York
Kellyann Mazich is one of 15,555 physician assistant records with a practice address in New York. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 71% of them.
- NPI issued2022 · 71% of these records are older, 23% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2022 · median 2018 among the 8,158 with a school on file
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
60 physician assistant records list a practice address in Oceanside
They are 60 of the 1,093 NPPES records with a practice address in Oceanside, and 15,555 physician assistant records in New York.
All 15,555 in New York → Every provider in Oceanside → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Vandette Carter, P.A.Oceanside, NY 115721568449569
- Courtney Ciesla, PAOceanside, NY 115721093805830
- Michele Farber, P.A.Oceanside, NY 115721982878492
- Brian Janicek, P.A.Oceanside, NY 115721407832413
- Mariam Karram-Fendoune, P.A.-COceanside, NY 115721568689255
- Gina Pontrelli, P.A.Oceanside, NY 115721417934753
- David Prince, P.A.Oceanside, NY 115721649483827
- Renee Reinertsen, PAOceanside, NY 115721770761702
Common questions
What is Kellyann Mazich's NPI number?
Kellyann Mazich's National Provider Identifier (NPI) is 1649905704, issued on Jul 21, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Kellyann Mazich located?
The NPPES record lists a practice address at 1 Healthy Way, Oceanside, NY, 11572. Phone: (516) 632-3900. Providers update this record themselves, so call before visiting.
How can I verify Kellyann Mazich's license?
Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Kellyann Mazich prescribe under Medicare Part D?
In 2024, Kellyann Mazich had 412 Medicare Part D claims for 198 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Kellyann Mazich's MIPS final score?
The 2023 MIPS final score is 94.2 of 100. 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.