CHRISTOFOROS IRAKLIS GIAKOUMATOS MD
NPI 1336555267
Psychiatry & Neurology - Psychiatry in Boston, MA
About Christoforos Iraklis Giakoumatos Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOFOROS IRAKLIS GIAKOUMATOS MD (NPI 1336555267) is an individual psychiatry provider in Boston, Massachusetts, licensed in Massachusetts (273223) and active in the NPI registry since July 2014. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains a secondary practice location in Arlington.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Christoforos Iraklis Giakoumatos Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Christoforos Giakoumatos reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Belmont, MA 02478
- Reassigned Medicare billing, Massachusetts enrollment
- 422 clinicians in this Medicare group
Tewksbury, MA 01876
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1922101724 (Massachusetts)
- 97 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Christoforos Giakoumatos's NPI number?
The NPI number for Christoforos Giakoumatos is 1336555267. It was assigned to this individual provider in the NPPES registry on July 11, 2014.
Where is Christoforos Giakoumatos located?
Christoforos Giakoumatos practices at 100 Blossom St Ste 110, Boston, MA 02114. The listed phone number is (617) 726-6993.
What is Christoforos Giakoumatos's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Christoforos Giakoumatos enrolled in Medicare?
Yes. Christoforos Giakoumatos is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Christoforos Giakoumatos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christoforos Giakoumatos reassigns Medicare benefits to 4 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), The Mclean Hospital Corporation (Belmont, MA) and The Commonwealth Of Massachusetts (Tewksbury, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Christoforos Giakoumatos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christoforos Giakoumatos accept?
Health plans from Anthem Blue Cross and Blue Shield, Taro Health and WellSense Health Plan list Christoforos Giakoumatos as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Christoforos Giakoumatos affiliated with any hospitals?
According to CMS data, Christoforos Giakoumatos is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Christoforos Giakoumatos was last updated on February 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Christoforos Iraklis Giakoumatos, MD · NPI 1336555267
Psychiatry physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 11, 2014.
## Identity
- **NPI:** 1336555267 (Entity type: Individual)
- **Enumerated:** July 11, 2014
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 273223 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 100 BLOSSOM ST STE 110, Boston, MA 02114-2606
- **Phone:** (617) 726-6993
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); The Mclean Hospital Corporation (NPI 1114979580, Belmont, MA); The Commonwealth Of Massachusetts (NPI 1871680496, Tewksbury, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** February 28, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1336555267) · Data from the CMS NPPES public registry.