Gretchen Brewer, OD
- Medicare patients, 2024
- 178
- Part D claims, 2024
- 14
- Industry payments
- $2,325
- Affiliated sites
- 9
- Medical groups
- 9
- Practice address
- 4000 Luxottica Pl, Mason, OH 45040
- Practice phone
- Call (513) 765-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Luxottica of America Inc.
Mason, Ohio
Find Gretchen Brewer'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.
Gretchen Brewer is an optometrist in Mason, Ohio
Gretchen Brewer practices at Luxottica of America Inc. in Mason, Ohio.
Gretchen Brewer's NPI, 1235226671, was assigned on October 6, 2006. Gretchen Brewer graduated from Pennsylvania College of Optometry in 1999. Gretchen Brewer holds Pennsylvania license OEG000944.
- NPI
- 1235226671NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305975855
- NPI enumeration date
- October 6, 2006
- NPI status
- Active
- Practice phone
- (513) 765-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Gretchen Brewer practices at Luxottica of America Inc. in Mason, Ohio
Gretchen Brewer's primary practice is Luxottica of America Inc., at 4000 Luxottica Pl, Mason, OH 45040 in Warren County. The practice phone is (513) 765-6000.
- Luxottica of America Inc.4000 Luxottica Pl, Mason, OH 45040 · Warren CountyPhone(513) 765-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Gretchen Brewer is affiliated with 10 sites of care and 9 medical groups
Gretchen Brewer's primary practice is Luxottica of America Inc. in Mason, Ohio. Dmand AI also links Gretchen Brewer to 9 group practices and clinics and 9 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 Gretchen Brewer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gretchen Brewer practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Luxottica of America Inc. | Available with a free account |
| +9 more sites and 9 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Gretchen Brewer is one of 2,779 optometrists in Ohio
Optometrist is Gretchen Brewer's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gretchen Brewer is licensed in Pennsylvania.
Specialties and state licenses
- Optometrist, PennsylvaniaPrimary
Optometrists near Gretchen Brewer
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
Gretchen Brewer treated 178 Medicare patients in 2024, average age 74
CMS counts 178 Medicare patients who saw Gretchen Brewer in 2024. The largest group is 65 to 74, with 99 patients. 73% of them have high cholesterol, and 69% have high blood pressure. Their average risk score is 0.88, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gretchen Brewer's median patient age at 69, with 60% women.
Gretchen Brewer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gretchen Brewer's Medicare patients by sex, 2024
- Women11162%
- Men6738%
Chronic conditions among Gretchen Brewer's Medicare patients, 2024
- High cholesterol73%
- High blood pressure69%
- Arthritis36%
- Diabetes26%
- Mood disorders21%
- Ischemic heart disease20%
- Chronic kidney disease19%
- Osteoporosis17%
Share of Medicare patients with each condition. A patient can have several.
Gretchen Brewer'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
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gretchen Brewer wrote 14 Medicare Part D claims in 2024
In 2024, Gretchen Brewer wrote 14 Medicare Part D claims. 79% of them were for generic drugs.
Gretchen Brewer's Part D claims by kind of drug, 2024
- Generic11 claims79%
- Brand-name and other3 claims21%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Gretchen Brewer takes part in Medicare
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Source: Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
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Gretchen Brewer received $2,325 in industry payments in 2025
CMS Open Payments shows 17 general payments to Gretchen Brewer from 4 drug and device companies in 2025. Speaker and faculty fees make up the largest share, 75% of the total. Alcon Laboratories Inc paid the most, $1,658.
General payments to Gretchen Brewer by kind, 2025 to 2025
- Speaker and faculty fees$1,75075%
- Food and beverage$57525%
Companies that paid Gretchen Brewer the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Gretchen Brewer graduated from Pennsylvania College of Optometry
Gretchen Brewer graduated from Pennsylvania College of Optometry in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gretchen Brewer'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 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 Gretchen Brewer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gretchen Brewer's NPI number?
Gretchen Brewer's NPI number is 1235226671. It was assigned on October 6, 2006, and it is active in the NPI Registry.
What does Gretchen Brewer specialize in?
Gretchen Brewer is an optometrist in Mason, Ohio. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gretchen Brewer practice?
Gretchen Brewer practices at 4000 Luxottica Pl, Mason, OH 45040. Gretchen Brewer's primary practice is Luxottica of America Inc. in Mason, Ohio. Dmand AI also links Gretchen Brewer to 9 group practices and clinics and 9 medical groups.
What is Gretchen Brewer's office phone number?
The practice phone on file for Gretchen Brewer is (513) 765-6000.
What is Gretchen Brewer's medical license number?
Gretchen Brewer holds Pennsylvania license OEG000944.
How many Medicare patients does Gretchen Brewer see?
CMS counts 178 Medicare patients who saw Gretchen Brewer in 2024, with an average age of 74.
Where did Gretchen Brewer go to medical school?
Gretchen Brewer graduated from Pennsylvania College of Optometry in 1999.
Has Gretchen Brewer received payments from drug or device companies?
CMS Open Payments shows $2,325 in general payments to Gretchen Brewer from 4 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Gretchen Brewer been practicing?
Gretchen Brewer graduated from medical school in 1999, 27 years ago.
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