John J. Gardner, OD
- Medicare patients, 2024
- 123
- Part D claims, 2024
- 125
- Hospital affiliations
- 1
- Industry payments
- $242
- Medical groups
- 3
- Practice address
- 4440 W 95th Street, Oak Lawn, IL 60453
- Practice phone
- Call (708) 684-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John Gardner'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 J. Gardner is an optometrist in Oak Lawn, Illinois
John Gardner practices at Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health.
John Gardner's NPI, 1700942539, was assigned on December 28, 2006. John Gardner graduated from Ohio State University - College of Optometry in 1972. John Gardner holds Illinois license 046-006455.
- NPI
- 1700942539NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961468863
- NPI enumeration date
- December 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 684-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John J. Gardner practices at Advocate Christ Medical Center in Oak Lawn, Illinois
John Gardner's primary practice is Advocate Christ Medical Center, at 4440 W 95th Street, Oak Lawn, IL 60453 in Cook County. The practice phone is (708) 684-8000.
- Advocate Christ Medical Center4440 W 95th Street, Oak Lawn, IL 60453 · Cook CountyPhone(708) 684-8000
Source: Dmand AI Affiliation Data
John J. Gardner is affiliated with 4 sites of care and 3 medical groups
John Gardner's primary practice is Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health. Dmand AI also links John Gardner to 3 group practices and clinics and 3 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 J. Gardner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Gardner practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Christ Medical Center | Available with a free account |
| +3 more sites and 3 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 Advocate Health and 6.2K+ hospitals, with verified contacts in the same login.
John J. Gardner is one of 2,194 optometrists in Illinois
Optometrist is John Gardner's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Gardner is licensed in Illinois.
Specialties and state licenses
- Optometrist, IllinoisPrimary
Optometrists near John Gardner
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 J. Gardner treated 123 Medicare patients in 2024, average age 76
CMS counts 123 Medicare patients who saw John Gardner in 2024. The largest group is 65 to 74, with 58 patients. 75% of them have high cholesterol, and 72% have high blood pressure. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Gardner's median patient age at 72, with 56% women.
John Gardner's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Gardner's Medicare patients by sex, 2024
- Women7863%
- Men4537%
Chronic conditions among John Gardner's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis40%
- Cancer25%
- Anxiety23%
- Ischemic heart disease21%
- Diabetes20%
- Mood disorders16%
Share of Medicare patients with each condition. A patient can have several.
John Gardner'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
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John J. Gardner wrote 125 Medicare Part D claims in 2024
In 2024, John Gardner wrote 125 Medicare Part D claims for 46 patients. 54% of them were for generic drugs.
John Gardner's Part D claims by kind of drug, 2024
- Generic67 claims54%
- Brand-name58 claims46%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How John J. Gardner takes part in Medicare
John Gardner 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 J. Gardner received $242 in industry payments in 2025
CMS Open Payments shows 3 general payments to John Gardner from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. RxSight Inc paid the most, $125.
Companies that paid John Gardner 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 J. Gardner graduated from Ohio State University - College of Optometry
John Gardner graduated from Ohio State University - College of Optometry in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John J. Gardner'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 J. Gardner
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 J. Gardner's NPI number?
John J. Gardner's NPI number is 1700942539. It was assigned on December 28, 2006, and it is active in the NPI Registry.
What does John J. Gardner specialize in?
John J. Gardner is an optometrist in Oak Lawn, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John J. Gardner practice?
John Gardner practices at 4440 W 95th Street, Oak Lawn, IL 60453. John Gardner's primary practice is Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health. Dmand AI also links John Gardner to 3 group practices and clinics and 3 medical groups.
What is John J. Gardner's office phone number?
The practice phone on file for John Gardner is (708) 684-8000.
What is John J. Gardner's medical license number?
John Gardner holds Illinois license 046-006455.
Which hospitals is John J. Gardner affiliated with?
John Gardner practices at Advocate Christ Medical Center in Oak Lawn, Illinois.
Does John J. Gardner accept Medicare?
Yes. CMS lists John Gardner as accepting Medicare assignment.
How many Medicare patients does John J. Gardner see?
CMS counts 123 Medicare patients who saw John Gardner in 2024, with an average age of 76.
Where did John J. Gardner go to medical school?
John Gardner graduated from Ohio State University - College of Optometry in 1972.
Has John J. Gardner received payments from drug or device companies?
CMS Open Payments shows $242 in general payments to John Gardner from 3 companies from 2025 to 2025. The largest total came from RxSight Inc.
How long has John J. Gardner been practicing?
John Gardner graduated from medical school in 1972, 54 years ago.
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