Nicholas Caldwell, MD
NPI 1558011320 · Anatomic Pathology & Clinical Pathology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Caldwell, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Boston, MA (NPI 1558011320).
Provider details
- NPI number
- 1558011320
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 1021833 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
Mailing address
Registry dates
- Enumerated
- 2022-03-25
- Last updated
- 2025-02-24
- Certified
- 2025-02-24
Frequently asked questions
- What is Nicholas Caldwell's NPI number?
- Nicholas Caldwell's National Provider Identifier (NPI) is 1558011320, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Caldwell's specialty?
- Nicholas Caldwell is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Caldwell located?
- Nicholas Caldwell's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Nicholas Caldwell's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Caldwell is (617) 726-2000.
- Does Nicholas Caldwell accept Medicare?
- Nicholas Caldwell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Caldwell's NPI active?
- Yes — Nicholas Caldwell's NPI (1558011320) is active in the NPPES registry as of the last update on 2025-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.