Diane Marie Niestepski, P.A.
Physician Assistant · Hackettstown, NJ
Diane Marie Niestepski, P.A. is a physician assistant with a practice address in Hackettstown, New Jersey, and NPI 1508960543, issued on Sep 11, 2006. Check the license (New Jersey 25MP00157300, as entered in NPPES) with the New Jersey board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diane Marie Niestepski
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 25MP00157300 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 653 Willow Grove St, Hackettstown, NJ 07840
- Phone
- (908) 684-3005
- Enumerated
- Sep 11, 2006
- Record last updated
- Mar 19, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (908) 684-3301
- Medicare enrollment
- Enrolled (PECOS I20070119000317); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 653 Willow Grove St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Antonella Auciello, M.D.Internal Medicine Physician1629064043
- Amanda Canova, M.D.Obstetrics & Gynecology Physician1164468161
- Paul Cuntala, DPTOrthopedic Physical Therapist1578190195
- Lisa Defalco, D.O.Obstetrics & Gynecology Physician1659478691
- Sarah Fan, M.D.Cardiovascular Disease Physician1821035411
- Kimberly Schad, M.S., CNMAdvanced Practice Midwife1669400461
Verify Diane Marie Niestepski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
Search for license 25MP00157300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average physician assistant in 2024
206 Medicare Part D claims for 150 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 23 claims were for opioids.
Most prescribed
- Methylprednisolone73 claims
- Meloxicam49 claims
- Prednisone13 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): 79.4 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: $198.36
4 payments; by number, the most common kind was food and beverage; the largest payer was DePuy Synthes Sales Inc. 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
- North Jersey Sports Medicine And Orthopedic Center, LLCHackettstown, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
12 physician assistant records list a practice address in Hackettstown
They are 12 of the 575 NPPES records with a practice address in Hackettstown, and 3,393 physician assistant records in New Jersey.
All 12 in Hackettstown → All 3,393 in New Jersey → Every provider in Hackettstown →
Other physician assistant records in New Jersey
- Ann Marie Abadeer, PA-C, MHSRamsey, NJ1437796315
- Sydney AbajianWayne, NJ1386299774
- Bianca Nicole Abantao, PA-CBergenfield, NJ1346167418
- Ann Abbate, PA-CFreehold, NJ1932413879
- Diana AbbateMarlboro, NJ1790462679
- Salma AbdallaBayonne, NJ1437973047
- Sarah AbdeldiemRahway, NJ1225400849
- Dina Abdelslame, PA-C, DMSClifton, NJ1437802758
- Heather Abebe, PACamden, NJ1366523391
- Abigail AbecasisEatontown, NJ1982352712
Common questions
What is Diane Marie Niestepski, P.A.'s NPI number?
Diane Marie Niestepski, P.A.'s National Provider Identifier (NPI) is 1508960543, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diane Marie Niestepski, P.A. located?
The NPPES record lists a practice address at 653 Willow Grove St, Hackettstown, NJ, 07840. Phone: (908) 684-3005. Providers update this record themselves, so call before visiting.
How can I verify Diane Marie Niestepski, P.A.'s license?
NPPES lists New Jersey license number 25MP00157300, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.
How much does Diane Marie Niestepski, P.A. prescribe under Medicare Part D?
In 2024, Diane Marie Niestepski, P.A. had 206 Medicare Part D claims for 150 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Diane Marie Niestepski, P.A.'s MIPS final score?
The 2023 MIPS final score is 79.4 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.