John Patrick Brennan Sr., OD
- Affiliated sites
- 2
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 710 S Parrott Ave Brennan Eye Care, Okeechobee, FL 34974-5138
- Practice phone
- Call (863) 467-0595
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Brennan Eye Care
Eye care practice · Okeechobee, Florida
Find John Brennan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John Patrick Brennan Sr. is an optometrist in Okeechobee, Florida
John Brennan practices at Brennan Eye Care in Okeechobee, Florida.
John Brennan's NPI, 1366555021, was assigned on August 16, 2006. John Brennan graduated from University of Houston - College of Optometry in 1971. John Brennan holds Florida license FLOPC 000971.
- NPI
- 1366555021NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668541020
- NPI enumeration date
- August 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (863) 467-0595
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 81
- Medical school graduation
- 1971
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John Patrick Brennan Sr. practices at Brennan Eye Care in Okeechobee, Florida
John Brennan's primary practice is Brennan Eye Care, at 710 S Parrott Ave Brennan Eye Care, Okeechobee, FL 34974-5138. The practice phone is (863) 467-0595.
- Brennan Eye Care710 S Parrott Ave Brennan Eye Care, Okeechobee, FL 34974-5138Phone(863) 467-0595
Source: Dmand AI Affiliation Data
John Patrick Brennan Sr. is affiliated with 2 sites of care and 2 medical groups
John Brennan's primary practice is Brennan Eye Care in Okeechobee, Florida. Dmand AI also links John Brennan to 2 medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at John Patrick Brennan Sr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Brennan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brennan Eye Care | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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John Patrick Brennan Sr. is one of 2,585 optometrists in Florida
Optometrist is John Brennan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Brennan is licensed in Florida.
Specialties and state licenses
- Optometrist, FloridaPrimary
Optometrists near John Brennan
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
John Patrick Brennan Sr.'s patients have a median age of 75
Across all payers, Dmand AI patient panel data puts John Brennan's median patient age at 75, with 63% women.
John Brennan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women63%
- Men38%
Source: Dmand AI Patient Panel Data
How John Patrick Brennan Sr. takes part in Medicare
John Brennan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
John Patrick Brennan Sr. graduated from University of Houston - College of Optometry
John Brennan graduated from University of Houston - College of Optometry in 1971.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John Patrick Brennan Sr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about John Patrick Brennan Sr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Patrick Brennan Sr.'s NPI number?
John Patrick Brennan Sr.'s NPI number is 1366555021. It was assigned on August 16, 2006, and it is active in the NPI Registry.
What does John Patrick Brennan Sr. specialize in?
John Patrick Brennan Sr. is an optometrist in Okeechobee, Florida. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John Patrick Brennan Sr. practice?
John Brennan practices at 710 S Parrott Ave Brennan Eye Care, Okeechobee, FL 34974-5138. John Brennan's primary practice is Brennan Eye Care in Okeechobee, Florida. Dmand AI also links John Brennan to 2 medical groups and 1 group practice or clinic.
What is John Patrick Brennan Sr.'s office phone number?
The practice phone on file for John Brennan is (863) 467-0595.
What is John Patrick Brennan Sr.'s medical license number?
John Brennan holds Florida license FLOPC 000971.
Does John Patrick Brennan Sr. accept Medicare?
Yes. CMS lists John Brennan as accepting Medicare assignment.
Where did John Patrick Brennan Sr. go to medical school?
John Brennan graduated from University of Houston - College of Optometry in 1971.
How long has John Patrick Brennan Sr. been practicing?
John Brennan graduated from medical school in 1971, 55 years ago.
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