Leonard V. Messner, OD
- Medicare patients, 2024
- 107
- Part D claims, 2024
- 154
- Industry payments
- $518
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 3241 S Michigan Ave, Chicago, IL 60616-3878
- Practice phone
- Call (312) 949-7751
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Illinois Eye Institute
Eye care practice · Chicago, Illinois
Find Leonard Messner'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.
Leonard V. Messner is an optometrist in Chicago, Illinois
Leonard Messner practices at Illinois Eye Institute in Chicago, Illinois.
Leonard Messner's NPI, 1629061163, was assigned on August 30, 2005. Leonard Messner graduated from Pennsylvania College of Optometry in 1984. Leonard Messner holds Illinois license 046007897.
- NPI
- 1629061163NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850295023
- NPI enumeration date
- August 30, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 949-7751
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Leonard V. Messner practices at Illinois Eye Institute in Chicago, Illinois
Leonard Messner's primary practice is Illinois Eye Institute, at 3241 S Michigan Ave, Chicago, IL 60616-3878. The practice phone is (312) 949-7751.
- Illinois Eye Institute3241 S Michigan Ave, Chicago, IL 60616-3878Phone(312) 949-7751
Source: Dmand AI Affiliation Data
Leonard V. Messner is affiliated with 1 site of care and 1 medical group
Leonard Messner's primary practice is Illinois Eye Institute in Chicago, Illinois. Dmand AI also links Leonard Messner to 1 medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Leonard V. Messner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Leonard Messner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Illinois Eye Institute | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Leonard V. Messner is one of 2,194 optometrists in Illinois
Optometrist is Leonard Messner's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Leonard Messner is licensed in Illinois.
Specialties and state licenses
- Optometrist, IllinoisPrimary
Optometrists near Leonard Messner
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
Leonard V. Messner treated 107 Medicare patients in 2024, average age 71
CMS counts 107 Medicare patients who saw Leonard Messner in 2024. The largest group is 65 to 74, with 47 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 64% are also on Medicaid. Their average risk score is 1.64, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Leonard Messner's median patient age at 61, with 67% women.
Leonard Messner's Medicare patients by age, 2024
Leonard Messner's Medicare patients by sex, 2024
- Women7166%
- Men3634%
Chronic conditions among Leonard Messner's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes44%
- Chronic kidney disease39%
- Ischemic heart disease25%
- COPD20%
- Anxiety18%
Share of Medicare patients with each condition. A patient can have several.
Leonard Messner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Leonard V. Messner wrote 154 Medicare Part D claims in 2024
In 2024, Leonard Messner wrote 154 Medicare Part D claims for 36 patients. 44% of them were for generic drugs.
Leonard Messner's Part D claims by kind of drug, 2024
- Generic67 claims44%
- Brand-name87 claims56%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Leonard V. Messner takes part in Medicare
Leonard Messner 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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Leonard V. Messner received $518 in industry payments in 2025
CMS Open Payments shows 6 general payments to Leonard Messner from 5 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $164.
Companies that paid Leonard Messner the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Leonard V. Messner graduated from Pennsylvania College of Optometry
Leonard Messner graduated from Pennsylvania College of Optometry in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Leonard V. Messner'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 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) |
| 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 Leonard V. Messner
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Leonard V. Messner's NPI number?
Leonard V. Messner's NPI number is 1629061163. It was assigned on August 30, 2005, and it is active in the NPI Registry.
What does Leonard V. Messner specialize in?
Leonard V. Messner is an optometrist in Chicago, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Leonard V. Messner practice?
Leonard Messner practices at 3241 S Michigan Ave, Chicago, IL 60616-3878. Leonard Messner's primary practice is Illinois Eye Institute in Chicago, Illinois. Dmand AI also links Leonard Messner to 1 medical group.
What is Leonard V. Messner's office phone number?
The practice phone on file for Leonard Messner is (312) 949-7751.
What is Leonard V. Messner's medical license number?
Leonard Messner holds Illinois license 046007897.
Does Leonard V. Messner accept Medicare?
Yes. CMS lists Leonard Messner as accepting Medicare assignment.
How many Medicare patients does Leonard V. Messner see?
CMS counts 107 Medicare patients who saw Leonard Messner in 2024, with an average age of 71.
Where did Leonard V. Messner go to medical school?
Leonard Messner graduated from Pennsylvania College of Optometry in 1984.
Has Leonard V. Messner received payments from drug or device companies?
CMS Open Payments shows $518 in general payments to Leonard Messner from 5 companies from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Leonard V. Messner been practicing?
Leonard Messner graduated from medical school in 1984, 42 years ago.
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