Geoffrey Sakellis, M.D.
NPI 1376757757 · Diagnostic Radiology Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Geoffrey Sakellis, M.D. is a Diagnostic Radiology Physician provider in Springfield, MA (NPI 1376757757).
Provider details
- NPI number
- 1376757757
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 225729 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,774 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Piflufolastat F-18, Diagnostic, 1 MillicurieA9595 | 567 | $641 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 282 | $1,046 |
| Nuclear Medicine Study of Liver and Bile Duct System With Use of Drugs78227 | 145 | $344 |
| Technetium Tc-99m Mebrofenin, Diagnostic, Per Study Dose, Up to 15 MillicuriesA9537 | 134 | $62 |
| Technetium Tc-99m Medronate, Diagnostic, Per Study Dose, Up to 30 MillicuriesA9503 | 128 | $15 |
| Fluorodeoxyglucose F-18 Fdg, Diagnostic, Per Study Dose, Up to 45 MillicuriesA9552 | 127 | $352 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$118 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-09
- Last updated
- 2009-10-20
Frequently asked questions
- What is Geoffrey Sakellis's NPI number?
- Geoffrey Sakellis's National Provider Identifier (NPI) is 1376757757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Geoffrey Sakellis's specialty?
- Geoffrey Sakellis is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Geoffrey Sakellis located?
- Geoffrey Sakellis's practice location on file with NPPES is 759 Chestnut St, Springfield, MA 01199-1001.
- What is Geoffrey Sakellis's phone number?
- The practice phone number listed in the NPPES registry for Geoffrey Sakellis is (413) 794-0884.
- Does Geoffrey Sakellis accept Medicare?
- Geoffrey Sakellis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Geoffrey Sakellis's NPI active?
- Yes — Geoffrey Sakellis's NPI (1376757757) is active in the NPPES registry as of the last update on 2009-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.