Gregory D. O'Bryan, OD
- Medicare patients, 2024
- 131
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice locations
- 2
- Practice address
- 3120 Karnes Rd, Saint Joseph, MO 64506-1319
- Practice phone
- Call (816) 364-5800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
O'Bryan Eye Care
Physician office · Saint Joseph, Missouri
Find Gregory O'Bryan'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.
Gregory D. O'Bryan is an optometrist in Campbell, California
Gregory O'Bryan practices at O'Bryan Eye Care in Saint Joseph, Missouri.
Gregory O'Bryan's NPI, 1609931260, was assigned on December 26, 2006. Gregory O'Bryan graduated from University of Missouri St Louis - School of Optometry in 2001. Gregory O'Bryan holds Missouri license 2002017826.
- NPI
- 1609931260NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799688222
- NPI enumeration date
- December 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (816) 364-5800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory D. O'Bryan practices in Saint Joseph and Campbell
Gregory O'Bryan's primary practice is O'Bryan Eye Care, at 3120 Karnes Rd, Saint Joseph, MO 64506-1319. The practice phone is (816) 364-5800. The NPI Registry lists Gregory O'Bryan's practice address as 900 E Hamilton Ave, Campbell, CA 95008.
- O'Bryan Eye CarePrimary3120 Karnes Rd, Saint Joseph, MO 64506-1319Phone(816) 364-5800
- NPI Registry address900 E Hamilton Ave, Campbell, CA 95008 · Santa Clara County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Gregory D. O'Bryan is affiliated with 1 site of care
Gregory O'Bryan's primary practice is O'Bryan Eye Care in Saint Joseph, Missouri.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gregory D. O'Bryan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory O'Bryan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| O'Bryan Eye Care | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory D. O'Bryan is one of 7,206 optometrists in California
Optometrist is Gregory O'Bryan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gregory O'Bryan is licensed in Missouri.
Specialties and state licenses
- Optometrist, MissouriPrimary
Optometrists near Gregory O'Bryan
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
Gregory D. O'Bryan treated 131 Medicare patients in 2024, average age 75
CMS counts 131 Medicare patients who saw Gregory O'Bryan in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory O'Bryan's median patient age at 68, with 50% women.
Gregory O'Bryan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory O'Bryan's Medicare patients by sex, 2024
- Women7557%
- Men5643%
Chronic conditions among Gregory O'Bryan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Diabetes35%
- Chronic kidney disease22%
- Anxiety21%
- Ischemic heart disease19%
- COPD16%
Share of Medicare patients with each condition. A patient can have several.
Gregory O'Bryan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Gregory D. O'Bryan takes part in Medicare
Gregory O'Bryan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Gregory D. O'Bryan graduated from University of Missouri St Louis - School of Optometry
Gregory O'Bryan graduated from University of Missouri St Louis - School of Optometry in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory D. O'Bryan'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Gregory D. O'Bryan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory D. O'Bryan's NPI number?
Gregory D. O'Bryan's NPI number is 1609931260. It was assigned on December 26, 2006, and it is active in the NPI Registry.
What does Gregory D. O'Bryan specialize in?
Gregory D. O'Bryan is an optometrist in Campbell, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gregory D. O'Bryan practice?
Gregory O'Bryan practices at 3120 Karnes Rd, Saint Joseph, MO 64506-1319. Gregory O'Bryan also practices at 900 E Hamilton Ave, Campbell, CA 95008. Gregory O'Bryan's primary practice is O'Bryan Eye Care in Saint Joseph, Missouri.
What is Gregory D. O'Bryan's office phone number?
The practice phone on file for Gregory O'Bryan is (816) 364-5800.
What is Gregory D. O'Bryan's medical license number?
Gregory O'Bryan holds Missouri license 2002017826.
Does Gregory D. O'Bryan accept Medicare?
Yes. CMS lists Gregory O'Bryan as accepting Medicare assignment.
How many Medicare patients does Gregory D. O'Bryan see?
CMS counts 131 Medicare patients who saw Gregory O'Bryan in 2024, with an average age of 75.
Where did Gregory D. O'Bryan go to medical school?
Gregory O'Bryan graduated from University of Missouri St Louis - School of Optometry in 2001.
How long has Gregory D. O'Bryan been practicing?
Gregory O'Bryan graduated from medical school in 2001, 25 years ago.
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