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Olivia Grennan
NPI 1790449791 · Case Manager/Care Coordinator · Columbus, OH
Olivia Grennan is a Case Manager/Care Coordinator provider in Columbus, OH (NPI 1790449791).
Provider details
- NPI number
- 1790449791
- Entity type
- Individual
- Primary specialty
- Case Manager/Care CoordinatorOther Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Other Service Providers
Profile Score
Established profile(55/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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
4897 Karl Rd
Columbus, OH 43229-5147
Phone: (614) 846-2588
Street-level locationGet directions
Mailing address
776 N 4th St Apt 313
Columbus, OH 43215-3094
Registry dates
- Enumerated
- 2021-10-26
- Last updated
- 2021-11-08
- Certified
- 2021-11-08
Frequently asked questions
- What is Olivia Grennan's NPI number?
- Olivia Grennan's National Provider Identifier (NPI) is 1790449791, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olivia Grennan's specialty?
- Olivia Grennan is listed in the NPPES registry with a primary specialty of Case Manager/Care Coordinator (Other Service Providers).
- Where is Olivia Grennan located?
- Olivia Grennan's practice location on file with NPPES is 4897 Karl Rd, Columbus, OH 43229-5147.
- What is Olivia Grennan's phone number?
- The practice phone number listed in the NPPES registry for Olivia Grennan is (614) 846-2588.
- Is Olivia Grennan's NPI active?
- Yes — Olivia Grennan's NPI (1790449791) is active in the NPPES registry as of the last update on 2021-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.