Gelu Osian, M.D.
NPI 1396991857 · Transplant Surgery Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gelu Osian, M.D. is a Transplant Surgery Physician provider in Milwaukee, WI (NPI 1396991857).
Provider details
- NPI number
- 1396991857
- Entity type
- Individual
- Primary specialty
- Transplant Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 70564 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2008-08-14
- Last updated
- 2019-03-28
Frequently asked questions
- What is Gelu Osian's NPI number?
- Gelu Osian's National Provider Identifier (NPI) is 1396991857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gelu Osian's specialty?
- Gelu Osian is listed in the NPPES registry with a primary specialty of Transplant Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gelu Osian located?
- Gelu Osian's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Gelu Osian's phone number?
- The practice phone number listed in the NPPES registry for Gelu Osian is (414) 955-6920.
- Does Gelu Osian accept Medicare?
- Gelu Osian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gelu Osian's NPI active?
- Yes — Gelu Osian's NPI (1396991857) is active in the NPPES registry as of the last update on 2019-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.