Christopher Patrick O'Brien, M.D.
Pediatric Ophthalmology and Strabismus Specialist Physician · Knoxville, TN
Christopher Patrick O'Brien, M.D. is a pediatric ophthalmology and strabismus specialist physician with a practice address in Knoxville, Tennessee, and NPI 1629263421, issued on Sep 14, 2007. Check the license (Tennessee MD-49470, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Christopher Patrick O'Brien
- Credential
- M.D.
- Primary taxonomy
- Pediatric Ophthalmology and Strabismus Specialist Physician 207WX0110X
- License numbers
- MD-49470 TN
A116707 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6311 Kingston Pike, Knoxville, TN 37919
- Phone
- (865) 262-8473
- Enumerated
- Sep 14, 2007
- Record last updated
- Apr 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (865) 262-8550
- Medicare enrollment
- Enrolled (PECOS I20250830000737); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest pediatric ophthalmology and strabismus specialist physician records → All 11 in Tennessee → Look up another NPI →
Also registered at 6311 Kingston Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Griffith, MDDermatology Physician1689758138
Verify Christopher Patrick O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD-49470Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average pediatric ophthalmology and strabismus specialist physician in 2024
33 Medicare Part D claims, against an average of 111 among the 150 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- State OF Mississippi-University OF Mississippi Medical CenterFlowood, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Patrick O'Brien among 11 pediatric ophthalmology and strabismus specialist physician records in Tennessee
Christopher Patrick O'Brien, M.D. is one of 11 pediatric ophthalmology and strabismus specialist physician records with a practice address in Tennessee. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 64% of them.
- NPI issued2007 · 64% of these records are older, 27% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 91% of these records are
- Graduated2007 · median 1993 among the 10 with a school on file
- Record last updated2020 · 9% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0110X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Ophthalmology and Strabismus Specialist Physician providers in Tennessee
There are 11 pediatric ophthalmology and strabismus specialist physician records in Tennessee.
All 11 in Tennessee → Every provider in Knoxville → Pediatric Ophthalmology and Strabismus Specialist Physician nationwide →
The 8 pediatric ophthalmology and strabismus specialist physician records with the nearest ZIP codes
- Carl Flinn, MDMemphis, TN 381201467481796
- Grayson Ashby, MDNashville, TN 372321598414641
- Nancy Benegas, MDNashville, TN 372321275504854
- Sean Donahue, MD, PHDNashville, TN 372321083706402
- Meghan Flemmons, MDNashville, TN 372321912990631
- Alexis Flowers, MDNashville, TN 372321821444589
- Jeffrey Hunter, MDNashville, TN 372321134122153
- Anvesh Reddy, MDNashville, TN 372321366737025
Common questions
What is Christopher Patrick O'Brien, M.D.'s NPI number?
Christopher Patrick O'Brien, M.D.'s National Provider Identifier (NPI) is 1629263421, issued on Sep 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Patrick O'Brien, M.D. located?
The NPPES record lists a practice address at 6311 Kingston Pike, Knoxville, TN, 37919. Phone: (865) 262-8473. Providers update this record themselves, so call before visiting.
How can I verify Christopher Patrick O'Brien, M.D.'s license?
NPPES lists Tennessee license number MD-49470, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Patrick O'Brien, M.D. prescribe under Medicare Part D?
In 2024, Christopher Patrick O'Brien, M.D. had 33 Medicare Part D claims; the average among pediatric ophthalmology and strabismus specialist physician prescribers was 111. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.