Katherine Antoniou, NP
Family Nurse Practitioner · Webster, MA
Katherine Antoniou, NP is a family nurse practitioner with a practice address in Webster, Massachusetts, and NPI 1306217617, issued on Oct 13, 2015. Check the license (Massachusetts RN280597, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Antoniou
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- RN280597 MA
Self-reported in NPPES; status is on the state search - Practice location
- 751 School St, Webster, MA 01570
- Phone
- (401) 441-1882
- Enumerated
- Oct 13, 2015
- Entity
- Type 1 · individual
Verify Katherine Antoniou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN280597Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
54% fewer Medicare Part D claims than the average family nurse practitioner in 2024
593 Medicare Part D claims for 100 beneficiaries, against an average of 1,302 among the 128,048 providers of this specialty who prescribed in Part D. 91 claims were for opioids.
Most prescribed
- Lorazepam51 claims
- Tramadol Hcl39 claims
- Oxycodone Hcl26 claims
- Pregabalin23 claims
- Levemir22 claims
- Clonazepam20 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: $88.75
1 payment, mostly food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc.. The 91,435 providers of this specialty with any payment received $675.31 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.
2 hospital and facility affiliations
- CH Specialty Services MA PCSpringfield, MA
- Curana Health OF Massachusetts LLCSpringfield, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
4 family nurse practitioner records list a Webster practice address
They are 4 of the 190 NPPES records with a Webster practice address, and 4,241 family nurse practitioner records in Massachusetts.
All 4 in Webster → All 4,241 in Massachusetts → Every provider in Webster →
Other family nurse practitioner records in Massachusetts
- Christina Abate, N.P.Boston, MA1235414970
- Katelynne Abbott, NPDanvers, MA1932355880
- Georgette Abboud, FNP-CHanscom Afb, MA1538593686
- Irfana Abdulhameed, FNPNorthborough, MA1417661786
- Christine Abraham, NPSouthborough, MA1215774658
- Catherine Abrams, FNP-CNorth Dartmouth, MA1528790599
- Wendy Abrams, FNPBoston, MA1962557801
- Michelle Abreu, FNP-BCArlington, MA1346138914
- Karolyn Abreu Blanco, FNP-BCLawrence, MA1043007644
- Carleigh AbromovitzBoston, MA1861215261
Common questions
What is Katherine Antoniou, NP's NPI number?
Katherine Antoniou, NP's National Provider Identifier (NPI) is 1306217617, issued on Oct 13, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Antoniou, NP located?
The NPPES record lists a practice address at 751 School St, Webster, MA, 01570. Phone: (401) 441-1882. Providers update this record themselves, so call before visiting.
How can I verify Katherine Antoniou, NP's license?
NPPES lists Massachusetts license number RN280597, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Antoniou, NP prescribe under Medicare Part D?
In 2024, Katherine Antoniou, NP had 593 Medicare Part D claims for 100 beneficiaries; the average among family nurse practitioner prescribers was 1,302. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.