Grigorios Kalaitzidis, MD
NPI 1104575968 · Student in an Organized Health Care Education/Training Program · Boston, MA
Enrolled with Medicare as Order and Referring Only - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grigorios Kalaitzidis, MD is a Student in an Organized Health Care Education/Training Program provider in Boston, MA (NPI 1104575968).
Provider details
- NPI number
- 1104575968
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
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
83% 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
- 2022-03-21
- Last updated
- 2022-04-06
- Certified
- 2022-03-25
Frequently asked questions
- What is Grigorios Kalaitzidis's NPI number?
- Grigorios Kalaitzidis's National Provider Identifier (NPI) is 1104575968, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grigorios Kalaitzidis's specialty?
- Grigorios Kalaitzidis is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Grigorios Kalaitzidis located?
- Grigorios Kalaitzidis's practice location on file with NPPES is Crosstown Primary Care, 801 Massachusetts Ave, Boston, MA 02119.
- What is Grigorios Kalaitzidis's phone number?
- The practice phone number listed in the NPPES registry for Grigorios Kalaitzidis is (617) 414-5951.
- Does Grigorios Kalaitzidis accept Medicare?
- Grigorios Kalaitzidis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grigorios Kalaitzidis's NPI active?
- Yes — Grigorios Kalaitzidis's NPI (1104575968) is active in the NPPES registry as of the last update on 2022-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.