NPPES file of Aug 9, 2026

Gretchen Hillstrom

Psychiatric/Mental Health Nurse Practitioner · Worcester, MA

Gretchen Hillstrom is a psychiatric/mental health nurse practitioner with a practice address in Worcester, Massachusetts, and NPI 1487146148, issued on May 30, 2018. Check the license (Massachusetts RN2321753, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1487146148
Name
Gretchen Hillstrom
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
RN2321753 MA
Self-reported in NPPES; status is on the state search
Practice location
108 Grove St Ste 307-310, Worcester, MA 01605
Phone
(774) 391-9173
Enumerated
May 30, 2018
Record last updated
May 8, 2025
Medicare enrollment
Enrolled (PECOS I20250527003567); 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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8 nearest psychiatric/mental health nurse practitioner records → All 2,169 in Massachusetts → Look up another NPI →

Also registered at 108 Grove St Ste 307-310

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

  1. Fabiana AlvesMental Health Counselor1851128813
  2. Lisa DooleyClinical Social Worker1174324065
  3. Numen EndersCounselor1932903200
  4. Hellen KuditcharClinical Social Worker1811815582
  5. Monica MuiruriPsychiatric/Mental Health Nurse Practitioner1467161794
  6. Alyssa SimmaranoPsychiatric/Mental Health Nurse Practitioner1417635111

Verify Gretchen Hillstrom 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 RN2321753    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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Bills Medicare through one group practice

  1. Northeast Health Services LLCWorcester, MA

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

Gretchen Hillstrom among 2,169 psychiatric/mental health nurse practitioner records in Massachusetts

Gretchen Hillstrom is one of 2,169 psychiatric/mental health nurse practitioner records with a practice address in Massachusetts. 74% 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 35% of them.

  • NPI issued2018 · 35% of these records are older, 61% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2024 · median 2021 among the 1,309 with a school on file
  • Record last updated2025 · 23% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

132 psychiatric/mental health nurse practitioner records list a practice address in Worcester

They are 132 of the 13,166 NPPES records with a practice address in Worcester, and 2,169 psychiatric/mental health nurse practitioner records in Massachusetts.

All 2,169 in Massachusetts → Every provider in Worcester → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Edith Claros, CNPWorcester, MA 016051063970234
  2. Jessica Crawford-GreyWorcester, MA 016051457740870
  3. Mary Dillon, RNCSWorcester, MA 016051265783336
  4. John JobWorcester, MA 016051407393010
  5. Kelechi JobWorcester, MA 016051821506783
  6. Judith MulageWorcester, MA 016051619306933
  7. Toni Parolisi, PMHNP-BCWorcester, MA 016051306300850
  8. Dilys Poku-Mensah, NPWorcester, MA 016051255569232

Common questions

What is Gretchen Hillstrom's NPI number?

Gretchen Hillstrom's National Provider Identifier (NPI) is 1487146148, issued on May 30, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Gretchen Hillstrom located?

The NPPES record lists a practice address at 108 Grove St Ste 307-310, Worcester, MA, 01605. Phone: (774) 391-9173. Providers update this record themselves, so call before visiting.

How can I verify Gretchen Hillstrom's license?

NPPES lists Massachusetts license number RN2321753, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity 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.