IndividualActive
Katharine Pfeiffer, STUDENT
NPI 1801666375 · Registered Nurse · Boston, MA
Katharine Pfeiffer, STUDENT is a Registered Nurse provider in Boston, MA (NPI 1801666375).
Provider details
- NPI number
- 1801666375
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- STUDENT
- Sex
- Female
- Sole proprietor
- No
- License
- RN2330619 (MA)
Specialties & taxonomies
Nursing Service 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
800 Washington St
Boston, MA 02111-1552
Phone: (617) 636-5000
Street-level locationGet directions
Mailing address
140 Commonwealth Ave
Chestnut Hill, MA 02467-3800
Registry dates
- Enumerated
- 2024-01-05
- Last updated
- 2026-06-04
- Certified
- 2026-06-04
Frequently asked questions
- What is Katharine Pfeiffer's NPI number?
- Katharine Pfeiffer's National Provider Identifier (NPI) is 1801666375, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katharine Pfeiffer's specialty?
- Katharine Pfeiffer is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Katharine Pfeiffer located?
- Katharine Pfeiffer's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Katharine Pfeiffer's phone number?
- The practice phone number listed in the NPPES registry for Katharine Pfeiffer is (617) 636-5000.
- Is Katharine Pfeiffer's NPI active?
- Yes — Katharine Pfeiffer's NPI (1801666375) is active in the NPPES registry as of the last update on 2026-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.