NPPES file of Aug 9, 2026

Catherine Welder, NP

Nurse Practitioner · Boston, MA

Catherine Welder, NP is a nurse practitioner with a practice address in Boston, Massachusetts, and NPI 1689446510, issued on Oct 24, 2023. Check the license (Massachusetts RN2285941, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1689446510
Name
Catherine Welder
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
RN2285941 MA
Self-reported in NPPES; status is on the state search
Practice location
100 Cambridge St, Boston, MA 02114
Phone
(617) 643-7289
Enumerated
Oct 24, 2023
Record last updated
Dec 27, 2025
Medicare enrollment
Enrolled (PECOS I20260415001721); may accept 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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8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →

Also registered at 100 Cambridge St

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

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  2. Sarah Al MaskriSocial Worker1659094431
  3. Reese Blanchard, BTBehavior Technician1790585875
  4. Militza CajigasCounseling Psychologist1144009556
  5. Shauna DawsonCounselor1538424809
  6. Ashley Decicco, AGNPNurse Practitioner1649943200

Verify Catherine Welder 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 RN2285941    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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Catherine Welder among 3,480 nurse practitioner records in Massachusetts

Catherine Welder, NP 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 not. Its NPI, issued in 2023, is newer than 86% of them.

  • NPI issued2023 · 86% of these records are older, 9% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2024 · median 2017 among the 1,963 with a school on file
  • Record last updated2025 · 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).

961 nurse practitioner records list a practice address in Boston

They are 961 of the 41,865 NPPES records with a practice address in Boston, and 3,480 nurse practitioner records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 3,480 in Massachusetts → Every provider in Boston → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Diane Bucknill, NPBoston, MA 021141376578658
  2. Debra Cambridge, NPBoston, MA 021141366430548
  3. Paula Curren, NPBoston, MA 021141457388373
  4. Beverly Gerade, NPBoston, MA 021141538119847
  5. Melissa Goode, N.P.Boston, MA 021141891736369
  6. Therese Hanley, NPBoston, MA 021141568494607
  7. Amy Kendall, N.P.Boston, MA 021141710942438
  8. Tara Killeen, N.P.Boston, MA 021141588688865

Common questions

What is Catherine Welder, NP's NPI number?

Catherine Welder, NP's National Provider Identifier (NPI) is 1689446510, issued on Oct 24, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Catherine Welder, NP located?

The NPPES record lists a practice address at 100 Cambridge St, Boston, MA, 02114. Phone: (617) 643-7289. Providers update this record themselves, so call before visiting.

How can I verify Catherine Welder, NP's license?

NPPES lists Massachusetts license number RN2285941, 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. 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.