John Steven Mason, OD
- Medicare patients, 2024
- 297
- Part D claims, 2024
- 980
- Industry payments
- $257
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 304 N Main St, Kenansville, NC 28349
- Practice phone
- Call (910) 296-1781
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Duplin Eye Associates PA
Kenansville, North Carolina
Find John Mason'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 Steven Mason is an optometrist in Kenansville, North Carolina
John Mason practices at Duplin Eye Associates PA in Kenansville, North Carolina.
John Mason's NPI, 1174596472, was assigned on February 8, 2006. John Mason graduated from Southern College of Optometry in 1999. John Mason holds North Carolina license 1767.
- NPI
- 1174596472NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587649850
- NPI enumeration date
- February 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (910) 296-1781
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John Steven Mason practices at Duplin Eye Associates PA in Kenansville, North Carolina
John Mason's primary practice is Duplin Eye Associates PA, at 304 N Main St, Kenansville, NC 28349 in Duplin County. The practice phone is (910) 296-1781.
- Duplin Eye Associates PA304 N Main St, Kenansville, NC 28349 · Duplin CountyPhone(910) 296-1781
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John Steven Mason is affiliated with 2 sites of care and 1 medical group
John Mason's primary practice is Duplin Eye Associates PA in Kenansville, North Carolina. Dmand AI also links John Mason to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at John Steven Mason's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Mason practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Duplin Eye Associates PA | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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John Steven Mason is one of 1,111 optometrists in North Carolina
Optometrist is John Mason's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Mason is licensed in North Carolina.
Specialties and state licenses
- Optometrist, North CarolinaPrimary
Optometrists near John Mason
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 Steven Mason treated 297 Medicare patients in 2024, average age 74
CMS counts 297 Medicare patients who saw John Mason in 2024. The largest group is 65 to 74, with 118 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 21% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Mason's median patient age at 72, with 63% women.
John Mason's Medicare patients by age, 2024
John Mason's Medicare patients by sex, 2024
- Women18763%
- Men11037%
Chronic conditions among John Mason's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes41%
- Arthritis40%
- Ischemic heart disease30%
- Chronic kidney disease26%
- Heart failure19%
- Anxiety17%
Share of Medicare patients with each condition. A patient can have several.
John Mason's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John Steven Mason wrote 980 Medicare Part D claims in 2024
In 2024, John Mason wrote 980 Medicare Part D claims for 240 patients. 54% of them were for generic drugs.
John Mason's Part D claims by kind of drug, 2024
- Generic533 claims54%
- Brand-name447 claims46%
Drug classes CMS tracks in John Mason's Part D claims, 2024
- Antibiotics2%21 of 980 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John Steven Mason ranks in the 59th percentile for cataract surgery in Medicare
John Mason accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 41 procedures of cataract surgery by John Mason, more than 59% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where John Mason ranks in Medicare procedure volume
- Cataract surgery
- 59th percentile41 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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John Steven Mason received $257 in industry payments in 2025
CMS Open Payments shows 9 general payments to John Mason from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $148.
Companies that paid John Mason 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 Steven Mason graduated from Southern College of Optometry
John Mason graduated from Southern College of Optometry in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John Steven Mason'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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 Steven Mason
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 Steven Mason's NPI number?
John Steven Mason's NPI number is 1174596472. It was assigned on February 8, 2006, and it is active in the NPI Registry.
What does John Steven Mason specialize in?
John Steven Mason is an optometrist in Kenansville, North Carolina. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John Steven Mason practice?
John Mason practices at 304 N Main St, Kenansville, NC 28349. John Mason's primary practice is Duplin Eye Associates PA in Kenansville, North Carolina. Dmand AI also links John Mason to 1 group practice or clinic and 1 medical group.
What is John Steven Mason's office phone number?
The practice phone on file for John Mason is (910) 296-1781.
What is John Steven Mason's medical license number?
John Mason holds North Carolina license 1767.
Does John Steven Mason accept Medicare?
Yes. CMS lists John Mason as accepting Medicare assignment.
How many Medicare patients does John Steven Mason see?
CMS counts 297 Medicare patients who saw John Mason in 2024, with an average age of 74.
Where did John Steven Mason go to medical school?
John Mason graduated from Southern College of Optometry in 1999.
Has John Steven Mason received payments from drug or device companies?
CMS Open Payments shows $257 in general payments to John Mason from 3 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has John Steven Mason been practicing?
John Mason graduated from medical school in 1999, 27 years ago.
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