NPPES file of Aug 9, 2026

Sou Lor Barrientos

Family Nurse Practitioner · Norfolk, MA

Sou Lor Barrientos is a family nurse practitioner with a practice address in Norfolk, Massachusetts, and NPI 1619473956, issued on Apr 4, 2018. Check the license (Massachusetts RN274894, 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
1619473956
Name
Sou Lor Barrientos
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
RN274894 MA
Self-reported in NPPES; status is on the state search
Practice location
2 Clark Street, Norfolk, MA 02056
Phone
(508) 660-5900
Enumerated
Apr 4, 2018
Record last updated
May 23, 2025
Medicare enrollment
Enrolled (PECOS I20230310000933); accepts Medicare assignment
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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Also registered at 2 Clark Street

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

  1. Herbert Ddungu, NPAdult Health Nurse Practitioner1568798981
  2. Nahomi Reyes-MendezStudent in an Organized Health Care Education/Training Program1932786472
  3. Diala Tawk, NPFamily Nurse Practitioner1407463110

Verify Sou Lor Barrientos 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 RN274894
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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21% more Medicare Part D claims than the average family nurse practitioner in 2024

1,573 Medicare Part D claims for 124 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Sou Barrientos1,573
  2. Specialty average1,305

Most prescribed

  1. Atorvastatin Calcium211 claims
  2. Amlodipine Besylate115 claims
  3. Lisinopril85 claims
  4. Losartan Potassium73 claims
  5. Omeprazole62 claims
  6. Fluticasone Propionate45 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: $22.49

1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sou Barrientos$22.49
  2. Specialty average$650.95

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. Harbor Health Services IncHyannis, MA

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

Sou Lor Barrientos among 4,724 family nurse practitioner records in Massachusetts

Sou Lor Barrientos 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 2018, is newer than 49% of them.

  • NPI issued2018 · 49% of these records are older, 46% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2020 · median 2019 among the 2,704 with a school on file
  • Record last updated2025 · 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).

3 family nurse practitioner records list a practice address in Norfolk

They are 3 of the 107 NPPES records with a practice address in Norfolk, and 4,724 family nurse practitioner records in Massachusetts.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Katherine Karol, NPNorfolk, MA 020561649684713
  2. Diala Tawk, NPNorfolk, MA 020561407463110
  3. Sudi Baker, NP FNP-BCMillis, MA 020541568895787
  4. Sara Campion-Egan, NPMillis, MA 020541083098941
  5. Michelle Storm, CNPMillis, MA 020541285188524
  6. Stephanie Changeau, MSN,FNP BCMedway, MA 020531215367206
  7. Kimberly Crocker Crowther, PHD, APRN, BC, FNPMedway, MA 020531417293879
  8. Tricia Gordon, FNP-BCMedway, MA 020531699108258

Common questions

What is Sou Lor Barrientos's NPI number?

Sou Lor Barrientos's National Provider Identifier (NPI) is 1619473956, issued on Apr 4, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Sou Lor Barrientos located?

The NPPES record lists a practice address at 2 Clark Street, Norfolk, MA, 02056. Phone: (508) 660-5900. Providers update this record themselves, so call before visiting.

How can I verify Sou Lor Barrientos's license?

NPPES lists Massachusetts license number RN274894, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Sou Lor Barrientos prescribe under Medicare Part D?

In 2024, Sou Lor Barrientos had 1,573 Medicare Part D claims for 124 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.

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.