MICHAEL RYAN HOLLAR DO
NPI 1770146326
Anesthesiology - Critical Care Medicine in Lexington, KY
About Michael Ryan Hollar Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL RYAN HOLLAR DO (NPI 1770146326) is an individual critical care medicine provider in Lexington, Kentucky, licensed in Kentucky (05561) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with University Of Kentucky Hospital, and is a graduate of Ohio University, College Of Osteopathic Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Michael Ryan Hollar Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Michael Hollar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lexington, KY 40536
- Reassigned Medicare billing, Kentucky enrollment
- 1,761 clinicians in this Medicare group
Lexington, KY 40517
- Reassigned Medicare billing, Kentucky enrollment
- 1,502 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Kentucky Hospital
Acute Care Hospitals · Lexington, KYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LEXINGTON, KY 40536
LEXINGTON, KY 40536
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Hollar's NPI number?
The NPI number for Michael Hollar is 1770146326. It was assigned to this individual provider in the NPPES registry on April 19, 2019.
Where is Michael Hollar located?
Michael Hollar practices at 800 Rose St, Lexington, KY 40536. The listed phone number is (859) 323-5956.
What is Michael Hollar's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.
Is Michael Hollar enrolled in Medicare?
Yes. Michael Hollar is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michael Hollar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Hollar reassigns Medicare benefits to 2 organizations: University Of Kentucky (Lexington, KY) and Kentucky Medical Services Foundation, Inc (Lexington, KY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Hollar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Hollar affiliated with any hospitals?
According to CMS data, Michael Hollar is affiliated with University Of Kentucky Hospital.
When was this NPI record last updated?
The NPPES record for Michael Hollar was last updated on May 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Michael Ryan Hollar, DO · NPI 1770146326
Critical Care Medicine physician in Lexington, Kentucky. Individual provider, active in the CMS NPPES registry since April 19, 2019.
## Identity
- **NPI:** 1770146326 (Entity type: Individual)
- **Enumerated:** April 19, 2019
- **Primary specialty:** Anesthesiology - Critical Care Medicine · taxonomy 207LC0200X
- **State license:** 05561 (Kentucky)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 ROSE ST, Lexington, KY 40536-7001
- **Phone:** (859) 323-5956 · **Fax:** (859) 323-1080
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Kentucky (NPI 1518911338, Lexington, KY); Kentucky Medical Services Foundation, Inc (NPI 1326091448, Lexington, KY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio University, College Of Osteopathic Medicine, class of 2019
## Record status
- **NPPES last updated:** May 13, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1770146326) · Data from the CMS NPPES public registry.