John Jacob Krochmal IV, OD
- Medicare patients, 2024
- 19
- Industry payments
- $398
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2020
- Practice address
- 4000 Luxottica Pl, Mason, OH 45040
- Practice phone
- Call (513) 765-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Luxottica of America Inc.
Mason, Ohio
Find John Krochmal'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 Jacob Krochmal IV is an optometrist in Mason, Ohio
John Krochmal practices at Luxottica of America Inc. in Mason, Ohio.
John Krochmal's NPI, 1942824503, was assigned on May 29, 2020. John Krochmal graduated from University of California - School of Optometry in 2020. John Krochmal holds California license 34564.
- NPI
- 1942824503NPI Registry (opens in a new tab)
- NPI enumeration date
- May 29, 2020
- NPI status
- Active
- Practice phone
- (513) 765-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
John Jacob Krochmal IV practices at Luxottica of America Inc. in Mason, Ohio
John Krochmal's primary practice is Luxottica of America Inc., at 4000 Luxottica Pl, Mason, OH 45040 in Warren County. The practice phone is (513) 765-6000.
- Luxottica of America Inc.4000 Luxottica Pl, Mason, OH 45040 · Warren CountyPhone(513) 765-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John Jacob Krochmal IV is affiliated with 2 sites of care
John Krochmal's primary practice is Luxottica of America Inc. in Mason, Ohio. Dmand AI also links John Krochmal to 1 physician office, 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 Jacob Krochmal IV's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Krochmal practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Luxottica of America Inc. | Available with a free account |
| +1 more affiliated site | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
John Jacob Krochmal IV is one of 2,779 optometrists in Ohio
Optometrist is John Krochmal's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Krochmal is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near John Krochmal
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 Jacob Krochmal IV treated 19 Medicare patients in 2024, average age 76
CMS counts 19 Medicare patients who saw John Krochmal in 2024. The largest group is under 65, with 0 patients. 74% of them have high cholesterol, and 58% have high blood pressure. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Krochmal's median patient age at 71, with 67% women.
John Krochmal's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among John Krochmal's Medicare patients, 2024
- High cholesterol74%
- High blood pressure58%
Share of Medicare patients with each condition. A patient can have several.
John Krochmal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John Jacob Krochmal IV received $398 in industry payments in 2025
CMS Open Payments shows 4 general payments to John Krochmal from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Nova Eye, Inc. paid the most, $230.
Companies that paid John Krochmal 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 Jacob Krochmal IV graduated from University of California - School of Optometry
John Krochmal graduated from University of California - School of Optometry in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John Jacob Krochmal IV'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) |
| 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 Jacob Krochmal IV
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 Jacob Krochmal IV's NPI number?
John Jacob Krochmal IV's NPI number is 1942824503. It was assigned on May 29, 2020, and it is active in the NPI Registry.
What does John Jacob Krochmal IV specialize in?
John Jacob Krochmal IV is an optometrist in Mason, Ohio. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John Jacob Krochmal IV practice?
John Krochmal practices at 4000 Luxottica Pl, Mason, OH 45040. John Krochmal's primary practice is Luxottica of America Inc. in Mason, Ohio. Dmand AI also links John Krochmal to 1 physician office.
What is John Jacob Krochmal IV's office phone number?
The practice phone on file for John Krochmal is (513) 765-6000.
What is John Jacob Krochmal IV's medical license number?
John Krochmal holds California license 34564, one of 2 state licenses on file.
How many Medicare patients does John Jacob Krochmal IV see?
CMS counts 19 Medicare patients who saw John Krochmal in 2024, with an average age of 76.
Where did John Jacob Krochmal IV go to medical school?
John Krochmal graduated from University of California - School of Optometry in 2020.
Has John Jacob Krochmal IV received payments from drug or device companies?
CMS Open Payments shows $398 in general payments to John Krochmal from 3 companies from 2025 to 2025. The largest total came from Nova Eye, Inc.
How long has John Jacob Krochmal IV been practicing?
John Krochmal graduated from medical school in 2020, 6 years ago.
Selling to optometrist practices?
See optometrists in Ohio 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