John Arthur McGreal Jr., OD
- Medicare patients, 2024
- 156
- Part D claims, 2024
- 493
- Hospital affiliations
- 1
- Industry payments
- $24,537
- Medical group
- 1
- Practice address
- 1015 Bowles, Fenton, MO 63026
- Practice phone
- Call (636) 496-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John McGreal'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 Arthur McGreal Jr. is an optometrist in Fenton, Missouri
John McGreal practices at SSM Health St. Clare Hospital - Fenton in Fenton, Missouri, part of SSM Health Care.
John McGreal's NPI, 1689661886, was assigned on October 3, 2005. John McGreal graduated from Pennsylvania College of Optometry in 1985. John McGreal holds Missouri license T03182.
- NPI
- 1689661886NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052504743
- NPI enumeration date
- October 3, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (636) 496-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John Arthur McGreal Jr. practices at SSM Health St. Clare Hospital - Fenton in Fenton, Missouri
John McGreal's primary practice is SSM Health St. Clare Hospital - Fenton, at 1015 Bowles, Fenton, MO 63026 in Jefferson County. The practice phone is (636) 496-2000.
- SSM Health St. Clare Hospital - Fenton1015 Bowles, Fenton, MO 63026 · Jefferson CountyPhone(636) 496-2000
Source: Dmand AI Affiliation Data
John Arthur McGreal Jr. is affiliated with 3 sites of care and 1 medical group
John McGreal's primary practice is SSM Health St. Clare Hospital - Fenton in Fenton, Missouri, part of SSM Health Care. Dmand AI also links John McGreal to 1 group practice or clinic, 1 hospital outpatient department and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John Arthur McGreal Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where John McGreal practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Clare Hospital - Fenton | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across SSM Health Care and 6.2K+ hospitals, with verified contacts in the same login.
John Arthur McGreal Jr. is one of 866 optometrists in Missouri
Optometrist is John McGreal's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John McGreal is licensed in Missouri.
Specialties and state licenses
- Optometrist, MissouriPrimary
Optometrists near John McGreal
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 Arthur McGreal Jr. treated 156 Medicare patients in 2024, average age 77
CMS counts 156 Medicare patients who saw John McGreal in 2024. The largest group is 75 to 84, with 64 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John McGreal's median patient age at 77, with 61% women.
John McGreal's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John McGreal's Medicare patients by sex, 2024
- Women8655%
- Men7045%
Chronic conditions among John McGreal's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Diabetes29%
- Ischemic heart disease27%
- Chronic kidney disease26%
- Cancer21%
- Anxiety20%
Share of Medicare patients with each condition. A patient can have several.
John McGreal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John Arthur McGreal Jr. wrote 493 Medicare Part D claims in 2024
In 2024, John McGreal wrote 493 Medicare Part D claims for 115 patients. 62% of them were for generic drugs.
John McGreal's Part D claims by kind of drug, 2024
- Generic307 claims62%
- Brand-name186 claims38%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How John Arthur McGreal Jr. takes part in Medicare
John McGreal 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
John Arthur McGreal Jr. received $24,537 in industry payments in 2025
CMS Open Payments shows 12 general payments to John McGreal from 6 drug and device companies in 2025. Consulting fees make up the largest share, 99% of the total. ABB Con-Cise Optical Group LLC paid the most, $24,240.
General payments to John McGreal by kind, 2025 to 2025
- Consulting fees$24,24099%
- Food and beverage$2971%
Companies that paid John McGreal the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
John Arthur McGreal Jr. graduated from Pennsylvania College of Optometry
John McGreal graduated from Pennsylvania College of Optometry in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John Arthur McGreal Jr.'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 DataDmand AI Org Hierarchy 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) |
| Part D prescribing | Medicare Part D Prescribers - 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Arthur McGreal Jr.
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 Arthur McGreal Jr.'s NPI number?
John Arthur McGreal Jr.'s NPI number is 1689661886. It was assigned on October 3, 2005, and it is active in the NPI Registry.
What does John Arthur McGreal Jr. specialize in?
John Arthur McGreal Jr. is an optometrist in Fenton, Missouri. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John Arthur McGreal Jr. practice?
John McGreal practices at 1015 Bowles, Fenton, MO 63026. John McGreal's primary practice is SSM Health St. Clare Hospital - Fenton in Fenton, Missouri, part of SSM Health Care. Dmand AI also links John McGreal to 1 group practice or clinic, 1 hospital outpatient department and 1 medical group.
What is John Arthur McGreal Jr.'s office phone number?
The practice phone on file for John McGreal is (636) 496-2000.
What is John Arthur McGreal Jr.'s medical license number?
John McGreal holds Missouri license T03182.
Which hospitals is John Arthur McGreal Jr. affiliated with?
John McGreal practices at SSM Health St. Clare Hospital - Fenton in Fenton, Missouri.
Does John Arthur McGreal Jr. accept Medicare?
Yes. CMS lists John McGreal as accepting Medicare assignment.
How many Medicare patients does John Arthur McGreal Jr. see?
CMS counts 156 Medicare patients who saw John McGreal in 2024, with an average age of 77.
Where did John Arthur McGreal Jr. go to medical school?
John McGreal graduated from Pennsylvania College of Optometry in 1985.
Has John Arthur McGreal Jr. received payments from drug or device companies?
CMS Open Payments shows $24,537 in general payments to John McGreal from 6 companies from 2025 to 2025. The largest total came from ABB Con-Cise Optical Group LLC.
How long has John Arthur McGreal Jr. been practicing?
John McGreal graduated from medical school in 1985, 41 years ago.
Selling to optometrist practices?
See optometrists in Missouri by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card