Gregory Demopulos, MD
NPI 1194842153 · Orthopaedic Surgery Physician · Mercer Island, WA
Gregory Demopulos, MD is a Orthopaedic Surgery Physician provider in Mercer Island, WA (NPI 1194842153).
Provider details
- NPI number
- 1194842153
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD00034190 (WA)
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
19 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
- 2007-03-23
- Last updated
- 2007-07-09
Frequently asked questions
- What is Gregory Demopulos's NPI number?
- Gregory Demopulos's National Provider Identifier (NPI) is 1194842153, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Demopulos's specialty?
- Gregory Demopulos is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Demopulos located?
- Gregory Demopulos's practice location on file with NPPES is 4845 Forest Ave Se, Mercer Island, WA 98040-4601.
- What is Gregory Demopulos's phone number?
- The practice phone number listed in the NPPES registry for Gregory Demopulos is (425) 232-3246.
- Is Gregory Demopulos's NPI active?
- Yes — Gregory Demopulos's NPI (1194842153) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.