John D. Gnezda
- Medicare patients, 2024
- 42
- Hospital affiliations
- 2
- Industry payments
- $109
- Medical groups
- 3
- State license
- 1
- Practice address
- 3500 Franciscan Way, Michigan City, IN 46360
- Practice phone
- Call (219) 879-8511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John Gnezda'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 D. Gnezda is a surgical physician assistant in Michigan City, Indiana
John Gnezda practices at Franciscan Health Michigan City in Michigan City, Indiana, part of Franciscan Alliance.
John Gnezda's NPI, 1295722296, was assigned on October 4, 2005. John Gnezda graduated from University of Alabama School of Medicine in 1993. John Gnezda holds Illinois license 085000608.
- NPI
- 1295722296NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325024367
- NPI enumeration date
- October 4, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (219) 879-8511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John D. Gnezda practices at Franciscan Health Michigan City in Michigan City, Indiana
John Gnezda's primary practice is Franciscan Health Michigan City, at 3500 Franciscan Way, Michigan City, IN 46360 in La Porte County. The practice phone is (219) 879-8511.
- Franciscan Health Michigan City3500 Franciscan Way, Michigan City, IN 46360 · La Porte CountyPhone(219) 879-8511
Source: Dmand AI Affiliation Data
John D. Gnezda is affiliated with 2 sites of care and 3 medical groups
John Gnezda's primary practice is Franciscan Health Michigan City in Michigan City, Indiana, part of Franciscan Alliance. John Gnezda is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians. Dmand AI also links John Gnezda to 2 more medical groups, 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 D. Gnezda's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Gnezda practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Franciscan Health Michigan City | Available with a free account |
| +1 more site and 2 medical groups | 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 Franciscan Alliance and 6.2K+ hospitals, with verified contacts in the same login.
John D. Gnezda is one of 138 surgical physician assistants in Indiana
Surgical is John Gnezda's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. John Gnezda is licensed in Illinois.
Specialties and state licenses
- Surgical physician assistant, IllinoisPrimary
Surgical physician assistants near John Gnezda
Counts of surgical physician assistants 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 D. Gnezda treated 42 Medicare patients in 2024, average age 70
CMS counts 42 Medicare patients who saw John Gnezda in 2024. The largest group is 65 to 74, with 23 patients. 75% of them have atrial fibrillation, and 75% have heart failure. Their average risk score is 1.98, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts John Gnezda's median patient age at 69, with 33% women.
John Gnezda's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Gnezda's Medicare patients by sex, 2024
- Women1536%
- Men2764%
Chronic conditions among John Gnezda's Medicare patients, 2024
- Atrial fibrillation75%
- Heart failure75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Diabetes64%
- Arthritis50%
- Chronic kidney disease50%
Share of Medicare patients with each condition. A patient can have several.
John Gnezda's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women33%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How John D. Gnezda takes part in Medicare
John Gnezda 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)
John D. Gnezda received $109 in industry payments in 2025
CMS Open Payments shows 3 general payments to John Gnezda from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. MAQUET Cardiovascular U.S. Sales, L.L.C. paid the most, $75.
Companies that paid John Gnezda 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 D. Gnezda graduated from University of Alabama School of Medicine
John Gnezda graduated from University of Alabama School of Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John D. Gnezda'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) |
| 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 D. Gnezda
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 D. Gnezda's NPI number?
John D. Gnezda's NPI number is 1295722296. It was assigned on October 4, 2005, and it is active in the NPI Registry.
What does John D. Gnezda specialize in?
John D. Gnezda is a surgical physician assistant in Michigan City, Indiana. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does John D. Gnezda practice?
John Gnezda practices at 3500 Franciscan Way, Michigan City, IN 46360. John Gnezda's primary practice is Franciscan Health Michigan City in Michigan City, Indiana, part of Franciscan Alliance. Dmand AI also links John Gnezda to 2 medical groups.
What is John D. Gnezda's office phone number?
The practice phone on file for John Gnezda is (219) 879-8511.
What is John D. Gnezda's medical license number?
John Gnezda holds Illinois license 085000608.
Which hospitals is John D. Gnezda affiliated with?
John Gnezda practices at Franciscan Health Michigan City in Michigan City, Indiana. John Gnezda is also affiliated with University of Chicago Medical Center.
What medical group is John D. Gnezda part of?
John Gnezda is linked to UChicago Medicine Physicians. Dmand AI links John Gnezda to 2 more medical groups.
Does John D. Gnezda accept Medicare?
Yes. CMS lists John Gnezda as accepting Medicare assignment.
How many Medicare patients does John D. Gnezda see?
CMS counts 42 Medicare patients who saw John Gnezda in 2024, with an average age of 70.
Where did John D. Gnezda go to medical school?
John Gnezda graduated from University of Alabama School of Medicine in 1993.
Has John D. Gnezda received payments from drug or device companies?
CMS Open Payments shows $109 in general payments to John Gnezda from 2 companies from 2025 to 2025. The largest total came from MAQUET Cardiovascular U.S. Sales, L.L.C.
How long has John D. Gnezda been practicing?
John Gnezda graduated from medical school in 1993, 33 years ago.
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