Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1689446510 Individual Practitioner Female Practitioner

Catherine Welder , NP

Nurse Practitioner • Boston, MA

Professional Overview & Biography Verified Profile Summary

Catherine Welder, NP is a certified Nurse Practitioner practicing in Boston, MA. With approximately 2 years of clinical experience since completing medical education in 2024, Catherine Welder delivers high-quality medical care to the local community at 100 CAMBRIDGE ST.

Catherine Welder does not directly accept Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

100 Cambridge St

Boston, MA 021142509

Telephone 6176437289
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Other

Graduation Year

2024

Medicare Assignment

Not Specified

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Boston, MA

Rising Specialist (<5 Yrs)
Practitioner Clinical Experience
2 Yrs -8.2 yrs vs City Avg
City Avg: 10.2 Yrs
State Avg: 12.5 Yrs
Regional Practice Density
972 Specialists

Practicing in Boston, MA (3545 Statewide)

Telehealth Adoption Rate
24.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Welder (2 Years) 2 Yrs
Boston Specialty Average (10.2 Years) 10.2 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-12-27
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License MA RN2285941

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

32 Associated Practitioners
Oluwatoyin Oladosu , NP

Nurse Practitioner - Family

NPI 1063719961

Nurse Practitioner

Justine Durand

Counselor - Mental Health

NPI 1073255337
Chloe Thum

Counselor - Mental Health

NPI 1073311668
Militza Cajigas

Psychologist - Counseling

NPI 1144009556
NPI 1154655447

Family Nurse Practitioner (Certified)

Isabelle Girard , RN, PMHNP

Nurse Practitioner - Psychiatric/Mental Health

NPI 1235794660

Registered Nurse, Psychiatric-Mental Health Nurse Practitioner

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events
📍
Updated Practice Location December 27, 2025

Registered at 100 CAMBRIDGE ST, BOSTON, MA 021142509 (Tel: 6176437289)

👤
Provider Name / Credentials Updated December 27, 2025

Recorded as CATHERINE WELDER, NP

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 27, 2025

Nurse Practitioner (License #RN2285941 in MA)

NPI Profile Active October 24, 2023

NPI status registered as active in NPPES database

📍
Updated Practice Location October 24, 2023

Registered at 55 FRUIT ST, BOSTON, MA 021142696 (Tel: 6177268048)

📍
Updated Business Mailing Address October 24, 2023

Registered at 36 GRANDVIEW AVE, MEDFORD, MA 021552933 (Tel: 3619462007)

👤
Provider Name / Credentials Updated October 24, 2023

Recorded as CATHERINE WELDER, RN

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 24, 2023

Registered Nurse (License #RN2285941 in MA)

🟢
Initial NPI Registration & Enumeration October 24, 2023

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1689446510
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 24, 2023
Last Update: December 27, 2025
Sole Proprietor: No

Mailing Address

36 Grandview Ave

Medford, MA 021552933

Phone: 3619462007

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.