Nicholas Christakis, MD PHD
NPI 1881684520 · Internal Medicine Physician · Boston, MA
Nicholas Christakis, MD PHD is a Internal Medicine Physician provider in Boston, MA (NPI 1881684520).
Provider details
- NPI number
- 1881684520
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD
- Sex
- Male
- License
- 212672 (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
20 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
- 2005-10-25
- Last updated
- 2007-07-08
Frequently asked questions
- What is Nicholas Christakis's NPI number?
- Nicholas Christakis's National Provider Identifier (NPI) is 1881684520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Christakis's specialty?
- Nicholas Christakis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Christakis located?
- Nicholas Christakis's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Nicholas Christakis's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Christakis is (617) 724-9197.
- Is Nicholas Christakis's NPI active?
- Yes — Nicholas Christakis's NPI (1881684520) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.