DR. PATRICK FRANCIS O'NEIL M.D.
NPI 1033400379
Family Medicine in Brunswick, MD
About Dr. Patrick Francis O'neil M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PATRICK FRANCIS O'NEIL M.D. (NPI 1033400379) is an individual family medicine provider in Brunswick, Maryland, licensed in Maryland (D86578) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and maintains a secondary practice location in Jefferson.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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
Dr. Patrick Francis O'neil M.d. 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
3Medicare enrollment records show Patrick O'neil reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Charles Town, WV 25414
- Reassigned Medicare billing, West Virginia enrollment
- 135 clinicians in this Medicare group
Arlington, VA 22203
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 242 clinicians in this Medicare group
Arlington, VA 22203
- Reassigned Medicare billing, Maryland enrollment
- 668 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 10
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.
Frederick Health Hospital
Acute Care Hospitals · Frederick, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21716 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Patrick O'neil's NPI number?
The NPI number for Patrick O'neil is 1033400379. It was assigned to this individual provider in the NPPES registry on April 20, 2011.
Where is Patrick O'neil located?
Patrick O'neil practices at 610 9th Ave, Brunswick, MD 21716. The listed phone number is (301) 834-7188.
What is Patrick O'neil's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Patrick O'neil enrolled in Medicare?
Yes. Patrick O'neil 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 Patrick O'neil's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick O'neil reassigns Medicare benefits to 3 organizations: East Mountain Health Physicians Inc (Charles Town, WV), Privia Care Center LLC (Arlington, VA) and Privia Medical Group, LLC (Arlington, VA). 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 Patrick O'neil's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Patrick O'neil accept?
Health plans from Oscar Health list Patrick O'neil as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Patrick O'neil affiliated with any hospitals?
According to CMS data, Patrick O'neil is affiliated with Frederick Health Hospital.
When was this NPI record last updated?
The NPPES record for Patrick O'neil was last updated on January 12, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.