Greta Gregg
- Medicare patients, 2024
- 71
- Part D claims, 2024
- 267
- Affiliated sites
- 2
- Medical groups
- 2
- State license
- 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 Greta Gregg'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.
Greta Gregg is an optometrist in Chicago, Illinois
Greta Gregg practices at Illinois Eye Institute in Chicago, Illinois.
Greta Gregg's NPI, 1134787559, was assigned on May 31, 2019. Greta Gregg graduated from Illinois College of Optometry at Chicago in 2019. Greta Gregg holds Illinois license 046011305.
- NPI
- 1134787559NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294068987
- NPI enumeration date
- May 31, 2019
- 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
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Greta Gregg practices at Illinois Eye Institute in Chicago, Illinois
Greta Gregg'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
Greta Gregg is affiliated with 2 sites of care and 2 medical groups
Greta Gregg's primary practice is Illinois Eye Institute in Chicago, Illinois. Dmand AI also links Greta Gregg to 2 medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Greta Gregg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Greta Gregg practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Illinois Eye Institute | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Greta Gregg is one of 2,194 optometrists in Illinois
Optometrist is Greta Gregg's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Greta Gregg is licensed in Illinois.
Specialties and state licenses
- Optometrist, IllinoisPrimary
Optometrists near Greta Gregg
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
Greta Gregg treated 71 Medicare patients in 2024, average age 75
CMS counts 71 Medicare patients who saw Greta Gregg in 2024. The largest group is 65 to 74, with 32 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 52% are also on Medicaid. Their average risk score is 1.99, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Greta Gregg's median patient age at 61, with 68% women.
Greta Gregg's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Greta Gregg's Medicare patients by sex, 2024
- Women5273%
- Men1927%
Chronic conditions among Greta Gregg's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis66%
- Diabetes46%
- Chronic kidney disease34%
- Ischemic heart disease32%
- Heart failure27%
- Osteoporosis23%
Share of Medicare patients with each condition. A patient can have several.
Greta Gregg'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
- Women68%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Greta Gregg wrote 267 Medicare Part D claims in 2024
In 2024, Greta Gregg wrote 267 Medicare Part D claims for 65 patients. 78% of them were for generic drugs.
Greta Gregg's Part D claims by kind of drug, 2024
- Generic208 claims78%
- Brand-name59 claims22%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Greta Gregg takes part in Medicare
Greta Gregg 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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Greta Gregg graduated from Illinois College of Optometry at Chicago
Greta Gregg graduated from Illinois College of Optometry at Chicago in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Greta Gregg'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) |
| 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 Greta Gregg
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Greta Gregg's NPI number?
Greta Gregg's NPI number is 1134787559. It was assigned on May 31, 2019, and it is active in the NPI Registry.
What does Greta Gregg specialize in?
Greta Gregg is an optometrist in Chicago, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Greta Gregg practice?
Greta Gregg practices at 3241 S Michigan Ave, Chicago, IL 60616-3878. Greta Gregg's primary practice is Illinois Eye Institute in Chicago, Illinois. Dmand AI also links Greta Gregg to 2 medical groups and 1 group practice or clinic.
What is Greta Gregg's office phone number?
The practice phone on file for Greta Gregg is (312) 949-7751.
What is Greta Gregg's medical license number?
Greta Gregg holds Illinois license 046011305.
Does Greta Gregg accept Medicare?
Yes. CMS lists Greta Gregg as accepting Medicare assignment.
How many Medicare patients does Greta Gregg see?
CMS counts 71 Medicare patients who saw Greta Gregg in 2024, with an average age of 75.
Where did Greta Gregg go to medical school?
Greta Gregg graduated from Illinois College of Optometry at Chicago in 2019.
How long has Greta Gregg been practicing?
Greta Gregg graduated from medical school in 2019, 7 years ago.
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