Theofanis Mitsinikos, DO, PC
NPI 1861929861 · Endocrinology, Diabetes & Metabolism Physician · Stony Brook, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theofanis Mitsinikos, DO, PC is a Endocrinology, Diabetes & Metabolism Physician organization in Stony Brook, NY (NPI 1861929861).
Provider details
- NPI number
- 1861929861
- Entity type
- Organization
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Theofanis Mitsinikos, Owner(631) 751-2400
- License
- 235458 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2017-05-22
- Last updated
- 2017-05-22
Frequently asked questions
- What is Theofanis Mitsinikos, DO, PC's NPI number?
- Theofanis Mitsinikos, DO, PC's National Provider Identifier (NPI) is 1861929861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Theofanis Mitsinikos, DO, PC?
- Theofanis Mitsinikos, DO, PC is classified in the NPPES registry as Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Theofanis Mitsinikos, DO, PC located?
- Theofanis Mitsinikos, DO, PC's practice location on file with NPPES is 2500 Nesconset Hwy Bldg 3c, Stony Brook, NY 11790-2551.
- What is Theofanis Mitsinikos, DO, PC's phone number?
- The practice phone number listed in the NPPES registry for Theofanis Mitsinikos, DO, PC is (631) 751-2400.
- Does Theofanis Mitsinikos, DO, PC accept Medicare?
- Theofanis Mitsinikos, DO, PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Theofanis Mitsinikos, DO, PC?
- The authorized official listed on Theofanis Mitsinikos, DO, PC's NPPES record is Theofanis Mitsinikos, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Theofanis Mitsinikos, DO, PC's NPI active?
- Yes — Theofanis Mitsinikos, DO, PC's NPI (1861929861) is active in the NPPES registry as of the last update on 2017-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.