Grigorios Kalaitzidis, MD
Student in an Organized Health Care Education/Training Program · Boston, MA
Grigorios Kalaitzidis, MD is a student in an organized health care education/training program with a practice address in Boston, Massachusetts, and NPI 1104575968, issued on Mar 21, 2022. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Grigorios Kalaitzidis
- Credential
- MD
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- Crosstown Primary Care, 801 Massachusetts Ave, Boston, MA 02119
- Phone
- (617) 414-5951
- Enumerated
- Mar 21, 2022
- Record last updated
- Apr 6, 2022
- Fax
- (617) 414-9251
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 11,235 in Massachusetts → Look up another NPI →
Verify Grigorios Kalaitzidis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average student in an organized health care education/training program in 2024
33 Medicare Part D claims for 14 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Grigorios Kalaitzidis among 11,235 student in an organized health care education/training program records in Massachusetts
Grigorios Kalaitzidis, MD is one of 11,235 student in an organized health care education/training program records with a practice address in Massachusetts. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 32% of them.
- NPI issued2022 · 32% of these records are older, 60% newer
- In a Medicare fileYes · 26% of these records are
- In the CMS Doctors and Clinicians fileNo · 4% of these records are
- Record last updated2022 · 27% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6,126 student in an organized health care education/training program records list a practice address in Boston
They are 6,126 of the 41,865 NPPES records with a practice address in Boston, and 11,235 student in an organized health care education/training program records in Massachusetts.
All 11,235 in Massachusetts → Every provider in Boston → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- David BennettRoxbury, MA 021191295968923
- Maria DominguezRoxbury, MA 021191245683432
- Lisa Dupree, STUDENTRoxbury, MA 021191073895371
- Miriam Fox, MDBoston, MA 021191285179069
- Tolieth Marks, INTERNRoxbury, MA 021191558596965
- Shameka McCraryRoxbury, MA 021191497088041
- Lauren O'BrienRoxbury, MA 021191275080285
- Dianne PierceRoxbury, MA 021191336421163
Common questions
What is Grigorios Kalaitzidis, MD's NPI number?
Grigorios Kalaitzidis, MD's National Provider Identifier (NPI) is 1104575968, issued on Mar 21, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Grigorios Kalaitzidis, MD located?
The NPPES record lists a practice address at Crosstown Primary Care, 801 Massachusetts Ave, Boston, MA, 02119. Phone: (617) 414-5951. Providers update this record themselves, so call before visiting.
How can I verify Grigorios Kalaitzidis, MD's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Grigorios Kalaitzidis, MD prescribe under Medicare Part D?
In 2024, Grigorios Kalaitzidis, MD had 33 Medicare Part D claims for 14 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.