IndividualActive
Catherine Welder, NP
NPI 1689446510 · Nurse Practitioner · Boston, MA
Catherine Welder, NP is a Nurse Practitioner provider in Boston, MA (NPI 1689446510).
Provider details
- NPI number
- 1689446510
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN2285941 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
Established profile(57/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
100 Cambridge St
Boston, MA 02114-2509
Phone: (617) 643-7289
Street-level locationGet directions
Mailing address
36 Grandview Ave
Medford, MA 02155-2933
Registry dates
- Enumerated
- 2023-10-24
- Last updated
- 2025-12-27
- Certified
- 2025-12-27
Frequently asked questions
- What is Catherine Welder's NPI number?
- Catherine Welder's National Provider Identifier (NPI) is 1689446510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Welder's specialty?
- Catherine Welder is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine Welder located?
- Catherine Welder's practice location on file with NPPES is 100 Cambridge St, Boston, MA 02114-2509.
- What is Catherine Welder's phone number?
- The practice phone number listed in the NPPES registry for Catherine Welder is (617) 643-7289.
- Is Catherine Welder's NPI active?
- Yes — Catherine Welder's NPI (1689446510) is active in the NPPES registry as of the last update on 2025-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.