Emily Casteen
NPI 1215875570 · Internal Medicine Physician · Boston, MA
Emily Casteen is a Internal Medicine Physician provider in Boston, MA (NPI 1215875570).
Provider details
- NPI number
- 1215875570
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 3020483 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
- 2026-03-24
- Last updated
- 2026-04-28
- Certified
- 2026-04-28
Frequently asked questions
- What is Emily Casteen's NPI number?
- Emily Casteen's National Provider Identifier (NPI) is 1215875570, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Emily Casteen's specialty?
- Emily Casteen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Emily Casteen located?
- Emily Casteen's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Emily Casteen's phone number?
- The practice phone number listed in the NPPES registry for Emily Casteen is (617) 636-5000.
- Is Emily Casteen's NPI active?
- Yes — Emily Casteen's NPI (1215875570) is active in the NPPES registry as of the last update on 2026-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.