Dr. Christopher O'brien M.D.
About this NPIWhat this record shows.
NPI 1629263421 is registered to Dr. Christopher O'brien M.D., a Pediatric Ophthalmology and Strabismus Specialist Physician practising at 6311 Kingston Pike, Suite 6w in Knoxville, Tennessee. Pediatric Ophthalmology and Strabismus Specialist Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Christopher O'brien M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Beyond the registryWhat this record adds.
It is enrolled in Medicare, linking to 3 PECOS enrollment records (each with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 12 Pediatric Ophthalmology and Strabismus Specialist Physician providers on file in Tennessee.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
Medicare enrollment
This provider holds 3 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20150112002307OphthalmologyTN
- I20200409000531OphthalmologyNY
- I20250830000737OphthalmologyMS
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Christopher O'brien M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Christopher O'brien M.D. directly at (865) 262-8473.
Frequently asked
Yes. NPI 1629263421 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Pediatric Ophthalmology and Strabismus Specialist Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (865) 262-8473.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Christopher O'brien M.D. is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 12 Pediatric Ophthalmology and Strabismus Specialist Physician providers are registered in Tennessee, and Dr. Christopher O'brien M.D. is one of them. The figure refreshes each month from the federal source.