DR. KELLY M O'BRIEN M.D.
NPI 1982898631
Internal Medicine in Houston, TX
About Dr. Kelly M O'brien M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KELLY M O'BRIEN M.D. (NPI 1982898631) is an individual internal medicine provider in Houston, Texas, licensed in Texas (M7484) and active in the NPI registry since September 2007. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and is a graduate of University Of Texas Medical School At San Antonio (2004).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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. Kelly M O'brien 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 Reassignment
Medicare enrollment records show Kelly O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 3,111 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 16
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Houston Methodist Hospital
Acute Care Hospitals · Houston, TXWomans Hospital Of Texas,the
Acute Care Hospitals · Houston, TXHouston Methodist Clear Lake Hospital
Acute Care Hospitals · Nassau Bay, TXHouston Methodist Sugarland Hospital
Acute Care Hospitals · Sugar Land, TXHouston Methodist West Hospital
Acute Care Hospitals · Houston, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77005 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 8
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
HOUSTON, TX 77005
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 Kelly O'brien's NPI number?
The NPI number for Kelly O'brien is 1982898631. It was assigned to this individual provider in the NPPES registry on September 5, 2007.
Where is Kelly O'brien located?
Kelly O'brien practices at 1701 Sunset Blvd, Houston, TX 77005. The listed phone number is (713) 526-5511.
What is Kelly O'brien's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Kelly O'brien enrolled in Medicare?
Yes. Kelly O'brien 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 organization bills Medicare for Kelly O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kelly O'brien reassigns Medicare benefits to Ut Physicians (Houston, TX). The 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 Kelly O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Kelly O'brien affiliated with any hospitals?
According to CMS data, Kelly O'brien is affiliated with Houston Methodist Hospital, Womans Hospital Of Texas,the, Houston Methodist Clear Lake Hospital, Houston Methodist Sugarland Hospital and Houston Methodist West Hospital.
When was this NPI record last updated?
The NPPES record for Kelly O'brien was last updated on February 9, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.