Marianna Zelenak, D.O.
NPI 1174964795 · Internal Medicine Physician · Sarasota, FL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marianna Zelenak, D.O. is a Internal Medicine Physician provider in Sarasota, FL (NPI 1174964795).
Provider details
- NPI number
- 1174964795
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- UO2610 (FL)
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
12 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
- 2013-07-11
- Last updated
- 2014-04-16
Frequently asked questions
- What is Marianna Zelenak's NPI number?
- Marianna Zelenak's National Provider Identifier (NPI) is 1174964795, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianna Zelenak's specialty?
- Marianna Zelenak is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marianna Zelenak located?
- Marianna Zelenak's practice location on file with NPPES is 5952 Clark Center Ave, Sarasota, FL 34238-2715.
- What is Marianna Zelenak's phone number?
- The practice phone number listed in the NPPES registry for Marianna Zelenak is (941) 924-9955.
- Does Marianna Zelenak accept Medicare?
- Marianna Zelenak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marianna Zelenak's NPI active?
- Yes — Marianna Zelenak's NPI (1174964795) is active in the NPPES registry as of the last update on 2014-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.