NPPES file of Aug 9, 2026

Diana Weronika Slawniak, APRN

Family Nurse Practitioner · Worcester, MA

Diana Weronika Slawniak, APRN is a family nurse practitioner with a practice address in Worcester, Massachusetts, and NPI 1700421526, issued on Nov 15, 2019. Check the license (Massachusetts RN2300747, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1700421526
Name
Diana Weronika Slawniak
Credential
APRN
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
RN2300747 MA
Self-reported in NPPES; status is on the state search
Practice location
44 W Boylston St, Worcester, MA 01605
Phone
(508) 852-0238
Enumerated
Nov 15, 2019
Record last updated
Nov 15, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200125000326); accepts Medicare assignment
Medical or professional school
University Of Massachusetts Medical School, 2019
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →

Also registered at 44 W Boylston St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Irene Acheampong, MSN,FNP, BSN, RNFamily Nurse Practitioner1295390227
  2. Daniesha BaileyPharmacist1669255097
  3. Zengying ChenPharmacist1902787187
  4. Alaa Haffar, PHARMDPharmacist1922680503
  5. Afua KonaduFamily Nurse Practitioner1093105660
  6. Anthony Macharia, PHARMDPharmacist1760215321

Verify Diana Weronika Slawniak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license RN2300747    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Massachusetts license search

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71% fewer Medicare Part D claims than the average family nurse practitioner in 2024

376 Medicare Part D claims for 131 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 16 claims were for opioids.

  1. Diana Slawniak376
  2. Specialty average1,305

Most prescribed

  1. Atorvastatin Calcium19 claims
  2. Lisinopril16 claims
  3. Omeprazole15 claims
  4. Fluticasone Propionate14 claims
  5. Pantoprazole Sodium12 claims
  6. Trulicity12 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 one group practice

  1. Evans Medical Foundation IncBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Diana Weronika Slawniak among 4,724 family nurse practitioner records in Massachusetts

Diana Weronika Slawniak, APRN is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 54% of them.

  • NPI issued2019 · 54% of these records are older, 40% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2019 · median 2019 among the 2,704 with a school on file
  • Record last updated2019 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

177 family nurse practitioner records list a practice address in Worcester

They are 177 of the 13,166 NPPES records with a practice address in Worcester, and 4,724 family nurse practitioner records in Massachusetts.

All 4,724 in Massachusetts → Every provider in Worcester → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Ama Ahenkorah, FNPWorcester, MA 016051952553232
  2. Svetlana Borochin, N.PWorcester, MA 016051609128149
  3. Jessica Deglialberti, N.P.-CWorcester, MA 016051689920993
  4. Lyndsey Digiorgio, FNPWorcester, MA 016051851661029
  5. Robynn Eisley, FNPWorcester, MA 016051467637702
  6. Lorraine LoretzWorcester, MA 016051649202441
  7. Jennifer Markey, NPWorcester, MA 016051083800916
  8. Donna Raymond, FNPWorcester, MA 016051407817687

Common questions

What is Diana Weronika Slawniak, APRN's NPI number?

Diana Weronika Slawniak, APRN's National Provider Identifier (NPI) is 1700421526, issued on Nov 15, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Diana Weronika Slawniak, APRN located?

The NPPES record lists a practice address at 44 W Boylston St, Worcester, MA, 01605. Phone: (508) 852-0238. Providers update this record themselves, so call before visiting.

How can I verify Diana Weronika Slawniak, APRN's license?

NPPES lists Massachusetts license number RN2300747, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Diana Weronika Slawniak, APRN prescribe under Medicare Part D?

In 2024, Diana Weronika Slawniak, APRN had 376 Medicare Part D claims for 131 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.