John David Szewczyk, OD
- Part D claims, 2024
- 58
- Industry payments
- $63
- Affiliated sites
- 3
- Medical groups
- 3
- State license
- 1
- Practice address
- 4921 Parkview Pl, Saint Louis, MO 63110
- Practice phone
- Call (314) 362-3937
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Washington University School of Medicine
Saint Louis, Missouri
Find John Szewczyk'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 David Szewczyk is an optometrist in Saint Louis, Missouri
John Szewczyk practices at Washington University School of Medicine in Saint Louis, Missouri.
John Szewczyk's NPI, 1275264996, was assigned on June 22, 2022. John Szewczyk graduated from New England College of Optometry in 2022. John Szewczyk holds Missouri license 2023032356.
- NPI
- 1275264996NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830553163
- NPI enumeration date
- June 22, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 362-3937
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John David Szewczyk practices at Washington University School of Medicine in Saint Louis, Missouri
John Szewczyk's primary practice is Washington University School of Medicine, at 4921 Parkview Pl, Saint Louis, MO 63110 in Saint Louis City. The practice phone is (314) 362-3937.
- Washington University School of Medicine4921 Parkview Pl, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 362-3937
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John David Szewczyk is affiliated with 4 sites of care and 3 medical groups
John Szewczyk's primary practice is Washington University School of Medicine in Saint Louis, Missouri. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links John Szewczyk to 3 more group practices and clinics and 2 medical groups, 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 David Szewczyk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Szewczyk practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Washington University School of Medicine | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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John David Szewczyk is one of 866 optometrists in Missouri
Optometrist is John Szewczyk's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Szewczyk is licensed in Missouri.
Specialties and state licenses
- Optometrist, MissouriPrimary
Optometrists near John Szewczyk
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 David Szewczyk's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts John Szewczyk's median patient age at 66, with 66% women.
John Szewczyk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women66%
- Men34%
Source: Dmand AI Patient Panel Data
John David Szewczyk wrote 58 Medicare Part D claims in 2024
In 2024, John Szewczyk wrote 58 Medicare Part D claims for 24 patients. 83% of them were for generic drugs.
John Szewczyk's Part D claims by kind of drug, 2024
- Generic48 claims83%
- Brand-name and other10 claims17%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How John David Szewczyk takes part in Medicare
John Szewczyk 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)
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John David Szewczyk received $63 in industry payments in 2025
CMS Open Payments shows 3 general payments to John Szewczyk from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Tarsus Pharmaceuticals, Inc. paid the most, $44.
Companies that paid John Szewczyk 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 David Szewczyk graduated from New England College of Optometry
John Szewczyk graduated from New England College of Optometry in 2022.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John David Szewczyk'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 Data |
| 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) |
| 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 David Szewczyk
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What is John David Szewczyk's NPI number?
John David Szewczyk's NPI number is 1275264996. It was assigned on June 22, 2022, and it is active in the NPI Registry.
What does John David Szewczyk specialize in?
John David Szewczyk is an optometrist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John David Szewczyk practice?
John Szewczyk practices at 4921 Parkview Pl, Saint Louis, MO 63110. John Szewczyk's primary practice is Washington University School of Medicine in Saint Louis, Missouri. Dmand AI also links John Szewczyk to 3 group practices and clinics and 2 medical groups.
What is John David Szewczyk's office phone number?
The practice phone on file for John Szewczyk is (314) 362-3937.
What is John David Szewczyk's medical license number?
John Szewczyk holds Missouri license 2023032356.
What medical group is John David Szewczyk part of?
John Szewczyk is linked to WashU Medicine Psychiatry. Dmand AI links John Szewczyk to 2 more medical groups.
Does John David Szewczyk accept Medicare?
Yes. CMS lists John Szewczyk as accepting Medicare assignment.
Where did John David Szewczyk go to medical school?
John Szewczyk graduated from New England College of Optometry in 2022.
Has John David Szewczyk received payments from drug or device companies?
CMS Open Payments shows $63 in general payments to John Szewczyk from 2 companies from 2025 to 2025. The largest total came from Tarsus Pharmaceuticals, Inc.
How long has John David Szewczyk been practicing?
John Szewczyk graduated from medical school in 2022, 4 years ago.
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