Katherine Alice Masso, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Webster, MA
Katherine Alice Masso, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Webster, Massachusetts, and NPI 1508435553, issued on Jun 23, 2021. Check the license (Massachusetts RN2268824, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Alice Masso
- Credential
- PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- RN2268824 MA
Self-reported in NPPES; status is on the state search - Practice location
- 340 Thompson RD, Webster, MA 01570
- Phone
- (508) 943-2600
- Enumerated
- Jun 23, 2021
- Record last updated
- Jun 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20211112002462); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 2,169 in Massachusetts → Look up another NPI →
Also registered at 340 Thompson RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Alice Masso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2268824Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
307 Medicare Part D claims for 52 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Quetiapine Fumarate16 claims
- Clonazepam15 claims
- Hydroxyzine Hcl14 claims
- Atorvastatin Calcium13 claims
- Trazodone Hcl13 claims
- Lisinopril11 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.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Umass Memorial Medical Group IncSouthbridge, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Alice Masso among 2,169 psychiatric/mental health nurse practitioner records in Massachusetts
Katherine Alice Masso, PMHNP 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 2021, is newer than 52% of them.
- NPI issued2021 · 52% of these records are older, 41% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2021 · median 2021 among the 1,309 with a school on file
- Record last updated2021 · 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).
11 psychiatric/mental health nurse practitioner records list a practice address in Webster
They are 11 of the 190 NPPES records with a practice address in Webster, and 2,169 psychiatric/mental health nurse practitioner records in Massachusetts.
All 2,169 in Massachusetts → Every provider in Webster → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Judith Antwi, PMHNPWebster, MA 015701770412652
- Heather Birt, CNPWebster, MA 015701710687090
- Nicoleta Cojocaru, PMHNP-BCWebster, MA 015701861124364
- Patricia Hogan, DNP, PMHNP-BCWebster, MA 015701174244495
- Thanh Tam Huynh, NPWebster, MA 015701659876555
- Jobin Kalathil, CRNPWebster, MA 015701023520749
- Cheryl Kemp, CNPWebster, MA 015701831344100
- James Macdonald, PMHNPWebster, MA 015701558713156
Common questions
What is Katherine Alice Masso, PMHNP's NPI number?
Katherine Alice Masso, PMHNP's National Provider Identifier (NPI) is 1508435553, issued on Jun 23, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Alice Masso, PMHNP located?
The NPPES record lists a practice address at 340 Thompson RD, Webster, MA, 01570. Phone: (508) 943-2600. Providers update this record themselves, so call before visiting.
How can I verify Katherine Alice Masso, PMHNP's license?
NPPES lists Massachusetts license number RN2268824, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Alice Masso, PMHNP prescribe under Medicare Part D?
In 2024, Katherine Alice Masso, PMHNP had 307 Medicare Part D claims for 52 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.
What is Katherine Alice Masso, PMHNP's MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.