John Marc Hamilton
- Medicare patients, 2024
- 91
- Part D claims, 2024
- 75
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 82 Maine St, Brunswick, ME 04011
- Practice phone
- Call (207) 657-4488
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gray Family Vision Center, P.A.
Brunswick, Maine
Find John Marc Hamilton'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 Marc Hamilton is an optometrist in Brunswick, Maine
John Marc Hamilton practices at Gray Family Vision Center, P.A. in Brunswick, Maine.
John Marc Hamilton's NPI, 1154949345, was assigned on July 14, 2020. John Marc Hamilton graduated from New England College of Optometry in 2020. John Marc Hamilton holds Maine license OPT1031.
- NPI
- 1154949345NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648680801
- NPI enumeration date
- July 14, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (207) 657-4488
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John Marc Hamilton practices at Gray Family Vision Center, P.A. in Brunswick, Maine
John Marc Hamilton's primary practice is Gray Family Vision Center, P.A., at 82 Maine St, Brunswick, ME 04011 in Cumberland County. The practice phone is (207) 657-4488.
- Gray Family Vision Center, P.A.82 Maine St, Brunswick, ME 04011 · Cumberland CountyPhone(207) 657-4488
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John Marc Hamilton is affiliated with 2 sites of care and 1 medical group
John Marc Hamilton's primary practice is Gray Family Vision Center, P.A. in Brunswick, Maine. Dmand AI also links John Marc Hamilton to 1 group practice or clinic and 1 medical group, 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 John Marc Hamilton's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Marc Hamilton practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gray Family Vision Center, P.A. | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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John Marc Hamilton is one of 261 optometrists in Maine
Optometrist is John Marc Hamilton's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Marc Hamilton is licensed in Maine.
Specialties and state licenses
- Optometrist, MainePrimary
Optometrists near John Marc Hamilton
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 Marc Hamilton treated 91 Medicare patients in 2024, average age 73
CMS counts 91 Medicare patients who saw John Marc Hamilton in 2024. The largest group is 65 to 74, with 48 patients. 67% of them have high cholesterol, and 56% have high blood pressure. 14% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Marc Hamilton's median patient age at 68, with 56% women.
John Marc Hamilton's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Marc Hamilton's Medicare patients by sex, 2024
- Women5459%
- Men3741%
Chronic conditions among John Marc Hamilton's Medicare patients, 2024
- High cholesterol67%
- High blood pressure56%
- Arthritis40%
- Anxiety30%
- Diabetes25%
- Mood disorders25%
- Depression23%
- Atrial fibrillation21%
Share of Medicare patients with each condition. A patient can have several.
John Marc Hamilton's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women56%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John Marc Hamilton wrote 75 Medicare Part D claims in 2024
In 2024, John Marc Hamilton wrote 75 Medicare Part D claims for 40 patients. 72% of them were for generic drugs.
John Marc Hamilton's Part D claims by kind of drug, 2024
- Generic54 claims72%
- Brand-name21 claims28%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How John Marc Hamilton takes part in Medicare
John Marc Hamilton 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)
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John Marc Hamilton graduated from New England College of Optometry
John Marc Hamilton graduated from New England College of Optometry in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John Marc Hamilton'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) |
| 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 Marc Hamilton
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 Marc Hamilton's NPI number?
John Marc Hamilton's NPI number is 1154949345. It was assigned on July 14, 2020, and it is active in the NPI Registry.
What does John Marc Hamilton specialize in?
John Marc Hamilton is an optometrist in Brunswick, Maine. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John Marc Hamilton practice?
John Marc Hamilton practices at 82 Maine St, Brunswick, ME 04011. John Marc Hamilton's primary practice is Gray Family Vision Center, P.A. in Brunswick, Maine. Dmand AI also links John Marc Hamilton to 1 group practice or clinic and 1 medical group.
What is John Marc Hamilton's office phone number?
The practice phone on file for John Marc Hamilton is (207) 657-4488.
What is John Marc Hamilton's medical license number?
John Marc Hamilton holds Maine license OPT1031.
Does John Marc Hamilton accept Medicare?
Yes. CMS lists John Marc Hamilton as accepting Medicare assignment.
How many Medicare patients does John Marc Hamilton see?
CMS counts 91 Medicare patients who saw John Marc Hamilton in 2024, with an average age of 73.
Where did John Marc Hamilton go to medical school?
John Marc Hamilton graduated from New England College of Optometry in 2020.
How long has John Marc Hamilton been practicing?
John Marc Hamilton graduated from medical school in 2020, 6 years ago.
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