NPPES file of Aug 9, 2026

Kirsten Piotrowski Sobkowich, APRN

Nurse Practitioner · Groton, MA

Kirsten Piotrowski Sobkowich, APRN is a nurse practitioner with a practice address in Groton, Massachusetts, and NPI 1891431771, issued on May 12, 2022. Check the license (Massachusetts RN2368610, 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
1891431771
Name
Kirsten Piotrowski Sobkowich
Credential
APRN
Primary taxonomy
Nurse Practitioner 363L00000X
License number
RN2368610 MA
Self-reported in NPPES; status is on the state search
Practice location
100 Boston RD Ste E, Groton, MA 01450
Phone
(978) 448-4300
Enumerated
May 12, 2022
Record last updated
Aug 25, 2022
Fax
(978) 448-4040
Medicare enrollment
Enrolled (PECOS I20230125000663); accepts Medicare assignment
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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Verify Kirsten Piotrowski Sobkowich 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 RN2368610
    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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31% more Medicare Part D claims than the average nurse practitioner in 2024

1,450 Medicare Part D claims for 491 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.

  1. Kirsten Sobkowich1,450
  2. Specialty average1,109

Most prescribed

  1. Atorvastatin Calcium111 claims
  2. Lisinopril86 claims
  3. Losartan Potassium67 claims
  4. Amlodipine Besylate63 claims
  5. Levothyroxine Sodium57 claims
  6. Rosuvastatin Calcium55 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: $1,527.88

61 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kirsten Sobkowich$1,527.88
  2. Specialty average$791.64

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

  1. Emerson Practice Associates, IncGroton, MA

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

Kirsten Piotrowski Sobkowich among 3,480 nurse practitioner records in Massachusetts

Kirsten Piotrowski Sobkowich, APRN is one of 3,480 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 2022, is newer than 80% of them.

  • NPI issued2022 · 80% of these records are older, 14% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2021 · median 2017 among the 1,963 with a school on file
  • Record last updated2022 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Massachusetts

There are 3,480 nurse practitioner records in Massachusetts.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Sarah Morasse, FNPHarvard, MA 014511265868467
  2. Rylee OsgoodHarvard, MA 014511417813890
  3. Erica Dee, NPLeominster, MA 014531881653905
  4. Abby Herget, NPLeominster, MA 014531447666466
  5. Kristal Imperio, NPLeominster, MA 014531780650234
  6. Brian Laurits, NPLeominster, MA 014531699062679
  7. Janice Lewis, NPLeominster, MA 014531962477521
  8. Elizabeth Melehov, NPLeominster, MA 014531700180080

Common questions

What is Kirsten Piotrowski Sobkowich, APRN's NPI number?

Kirsten Piotrowski Sobkowich, APRN's National Provider Identifier (NPI) is 1891431771, issued on May 12, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Kirsten Piotrowski Sobkowich, APRN located?

The NPPES record lists a practice address at 100 Boston RD Ste E, Groton, MA, 01450. Phone: (978) 448-4300. Providers update this record themselves, so call before visiting.

How can I verify Kirsten Piotrowski Sobkowich, APRN's license?

NPPES lists Massachusetts license number RN2368610, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Kirsten Piotrowski Sobkowich, APRN prescribe under Medicare Part D?

In 2024, Kirsten Piotrowski Sobkowich, APRN had 1,450 Medicare Part D claims for 491 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.

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.