Gregory L. Naberhaus, OD
- Medicare patients, 2024
- 307
- Part D claims, 2024
- 426
- Industry payments
- $272
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 111 E 4th St, Alton, IL 62002
- Practice phone
- Call (904) 992-9991
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aeg Florida Professional
Alton, Illinois
Find Gregory Naberhaus' 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.
Gregory L. Naberhaus is an optometrist in Alton, Illinois
Gregory Naberhaus practices at Aeg Florida Professional in Alton, Illinois.
Gregory Naberhaus' NPI, 1982012233, was assigned on July 31, 2014. Gregory Naberhaus holds Florida license OPC 4936.
- NPI
- 1982012233NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941519318
- NPI enumeration date
- July 31, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (904) 992-9991
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory L. Naberhaus practices at Aeg Florida Professional in Alton, Illinois
Gregory Naberhaus' primary practice is Aeg Florida Professional, at 111 E 4th St, Alton, IL 62002 in Madison County. The practice phone is (904) 992-9991.
- Aeg Florida Professional111 E 4th St, Alton, IL 62002 · Madison CountyPhone(904) 992-9991
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Gregory L. Naberhaus is affiliated with 3 sites of care and 2 medical groups
Gregory Naberhaus' primary practice is Aeg Florida Professional in Alton, Illinois. Dmand AI also links Gregory Naberhaus to 2 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 Gregory L. Naberhaus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Naberhaus practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aeg Florida Professional | Available with a free account |
| +2 more sites 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Gregory L. Naberhaus is one of 2,194 optometrists in Illinois
Optometrist is Gregory Naberhaus' primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gregory Naberhaus is licensed in Florida.
Specialties and state licenses
- Optometrist, FloridaPrimary
Optometrists near Gregory Naberhaus
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
Gregory L. Naberhaus treated 307 Medicare patients in 2024, average age 73
CMS counts 307 Medicare patients who saw Gregory Naberhaus in 2024. The largest group is 65 to 74, with 184 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Naberhaus' median patient age at 72, with 61% women.
Gregory Naberhaus' Medicare patients by age, 2024
Gregory Naberhaus' Medicare patients by sex, 2024
- Women18360%
- Men12440%
Chronic conditions among Gregory Naberhaus' Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis50%
- Diabetes31%
- Anxiety26%
- Chronic kidney disease26%
- Mood disorders25%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Gregory Naberhaus' 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
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory L. Naberhaus wrote 426 Medicare Part D claims in 2024
In 2024, Gregory Naberhaus wrote 426 Medicare Part D claims for 147 patients. 58% of them were for generic drugs.
Gregory Naberhaus' Part D claims by kind of drug, 2024
- Generic248 claims58%
- Brand-name178 claims42%
Drug classes CMS tracks in Gregory Naberhaus' Part D claims, 2024
- Antibiotics6%26 of 426 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Gregory L. Naberhaus ranks in the 62nd percentile for cataract surgery in Medicare
Gregory Naberhaus accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 46 procedures of cataract surgery by Gregory Naberhaus, more than 62% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Gregory Naberhaus ranks in Medicare procedure volume
- Cataract surgery
- 62nd percentile46 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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.
Gregory L. Naberhaus received $272 in industry payments in 2025
CMS Open Payments shows 4 general payments to Gregory Naberhaus from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $218.
Companies that paid Gregory Naberhaus the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Gregory L. Naberhaus'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) |
| 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) |
| 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 Gregory L. Naberhaus
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory L. Naberhaus' NPI number?
Gregory L. Naberhaus' NPI number is 1982012233. It was assigned on July 31, 2014, and it is active in the NPI Registry.
What does Gregory L. Naberhaus specialize in?
Gregory L. Naberhaus is an optometrist in Alton, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gregory L. Naberhaus practice?
Gregory Naberhaus practices at 111 E 4th St, Alton, IL 62002. Gregory Naberhaus' primary practice is Aeg Florida Professional in Alton, Illinois. Dmand AI also links Gregory Naberhaus to 2 group practices and clinics and 2 medical groups.
What is Gregory L. Naberhaus' office phone number?
The practice phone on file for Gregory Naberhaus is (904) 992-9991.
What is Gregory L. Naberhaus' medical license number?
Gregory Naberhaus holds Florida license OPC 4936.
Does Gregory L. Naberhaus accept Medicare?
Yes. CMS lists Gregory Naberhaus as accepting Medicare assignment.
How many Medicare patients does Gregory L. Naberhaus see?
CMS counts 307 Medicare patients who saw Gregory Naberhaus in 2024, with an average age of 73.
Has Gregory L. Naberhaus received payments from drug or device companies?
CMS Open Payments shows $272 in general payments to Gregory Naberhaus from 2 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Gregory L. Naberhaus been practicing?
Gregory Naberhaus graduated from medical school in 2014, 12 years ago.
Selling to optometrist practices?
See optometrists in Illinois 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