Theodoros Michelakos, MD
NPI 1639609878 · Surgery Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Surgical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theodoros Michelakos, MD is a Surgery Physician provider in Chicago, IL (NPI 1639609878).
Provider details
- NPI number
- 1639609878
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 271229 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$113 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
Additional practice locations (1)
- Massachusetts General Hospital55 Fruit St.Boston, MA 02114Phone: (617) 726-2800
Registry dates
- Enumerated
- 2017-06-19
- Last updated
- 2024-06-25
- Certified
- 2024-06-13
Frequently asked questions
- What is Theodoros Michelakos's NPI number?
- Theodoros Michelakos's National Provider Identifier (NPI) is 1639609878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodoros Michelakos's specialty?
- Theodoros Michelakos is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Theodoros Michelakos located?
- Theodoros Michelakos's practice location on file with NPPES is 5841 S Maryland Ave Rm O-217, Chicago, IL 60637-1443.
- What is Theodoros Michelakos's phone number?
- The practice phone number listed in the NPPES registry for Theodoros Michelakos is (773) 896-6160.
- Does Theodoros Michelakos accept Medicare?
- Theodoros Michelakos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theodoros Michelakos's NPI active?
- Yes — Theodoros Michelakos's NPI (1639609878) is active in the NPPES registry as of the last update on 2024-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.