Dr. John Patrick Brennan, MD
- Medicare services, 2021
- 163
- Part D claims, 2023
- 16
- MIPS score, 2024
- 92
- Industry payments
- $18
- Affiliated sites
- 1
- Practice address
- 1615 Northern Blvd Suite 403 Suite 403, Manhasset, NY 11030-3033
- Practice phone
- Call (516) 627-0145
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Manhasset Eye Physicians
Eye care practice · Manhasset, New York
Find Dr. Brennan'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.
Dr. John Patrick Brennan is an ophthalmologist in Roslyn, New York
Dr. Brennan practices at Manhasset Eye Physicians in Manhasset, New York.
Dr. Brennan's NPI, 1932285772, was assigned on October 27, 2006. Dr. Brennan holds New York license 097435.
- NPI
- 1932285772NPI Registry (opens in a new tab)
- NPI enumeration date
- October 27, 2006
- NPI status
- Active
- Practice phone
- (516) 627-0145
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 87
- Medical school graduation
- 1965
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Patrick Brennan practices in Manhasset and Roslyn
Dr. Brennan's primary practice is Manhasset Eye Physicians, at 1615 Northern Blvd Suite 403 Suite 403, Manhasset, NY 11030-3033. The practice phone is (516) 627-0145. The NPI Registry lists Dr. Brennan's practice address as 100 Port Washington Blvd, Roslyn, NY 11576.
- Manhasset Eye PhysiciansPrimary1615 Northern Blvd Suite 403 Suite 403, Manhasset, NY 11030-3033Phone(516) 627-0145
- NPI Registry address100 Port Washington Blvd, Roslyn, NY 11576 · Nassau CountyPhone(516) 627-0146
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. John Patrick Brennan is affiliated with 1 site of care and 1 medical group
Dr. Brennan's primary practice is Manhasset Eye Physicians in Manhasset, New York. Dmand AI also links Dr. Brennan to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. John Patrick Brennan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brennan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Manhasset Eye Physicians | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Patrick Brennan is one of 1,467 ophthalmologists in New York
Ophthalmology is Dr. Brennan's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Brennan is licensed in New York.
Specialties and state licenses
- Ophthalmology, New YorkPrimary
Ophthalmologists near Dr. Brennan
Counts of ophthalmologists 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
Dr. John Patrick Brennan billed Medicare for 163 services in 2021
CMS data shows 163 Medicare services from Dr. Brennan across 3 procedure codes in 2021. Medicare paid $9,480 for them. Every service was in an office.
Dr. Brennan's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Tests and treatments
- 2020: 3692021: 16356%
Dr. Brennan compared with the New York median for ophthalmologists, 2021
- Dr. Brennan
- New York median
- Medicare services
- 163vs 1,25887% below
- Part D claims
- 16vs 64798% below
Medians across 1,557 ophthalmologists in New York with Dmand AI profiles that report each measure.
Dr. Brennan's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Brennan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Brennan and other ophthalmologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Patrick Brennan's patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Brennan's median patient age at 61, with 75% women.
Dr. Brennan'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
- Women75%
- Men25%
Source: Dmand AI Patient Panel Data
Dr. John Patrick Brennan wrote 16 Medicare Part D claims in 2023
In 2023, Dr. Brennan wrote 16 Medicare Part D claims. They cover 1 drug, with $3,326 in total drug cost. In 2022, CMS named 11 claims across 1 drug.
Dr. Brennan's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 112023: 1645%
Drugs named by CMS: 1 in 2023, 1 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. John Patrick Brennan scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Brennan for performance year 2024, reported as part of a group.
Dr. Brennan's MIPS scores, performance year 2024
- 92of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John Patrick Brennan received $18 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Brennan from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $18.
Companies that paid Dr. Brennan the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Patrick Brennan'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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 Dr. John Patrick Brennan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Patrick Brennan's NPI number?
Dr. John Patrick Brennan's NPI number is 1932285772. It was assigned on October 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Patrick Brennan?
Dr. John Patrick Brennan is an ophthalmologist in Roslyn, New York. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. John Patrick Brennan practice?
Dr. Brennan practices at 1615 Northern Blvd Suite 403 Suite 403, Manhasset, NY 11030-3033. Dr. Brennan also practices at 100 Port Washington Blvd, Roslyn, NY 11576. Dr. Brennan's primary practice is Manhasset Eye Physicians in Manhasset, New York. Dmand AI also links Dr. Brennan to 1 medical group.
What is Dr. John Patrick Brennan's office phone number?
The practice phone on file for Dr. Brennan is (516) 627-0145.
What is Dr. John Patrick Brennan's medical license number?
Dr. Brennan holds New York license 097435.
Does Dr. John Patrick Brennan accept Medicare?
Yes. CMS data shows Dr. Brennan billed Medicare for 163 services in 2021.
What is Dr. John Patrick Brennan's MIPS score?
Dr. Brennan's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
What services does Dr. John Patrick Brennan bill to Medicare?
In 2021, Dr. Brennan's most billed Medicare services were eye exam or test (92014), eye exam or test (92012) and eye exam or test (92133).
What drugs does Dr. John Patrick Brennan prescribe most?
In 2023 Medicare Part D data, Dr. Brennan's most prescribed drugs by claims were Alphagan P.
Has Dr. John Patrick Brennan received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Brennan from 1 company from 2024 to 2024. The largest total came from Amgen Inc.
How long has Dr. John Patrick Brennan been practicing?
Dr. Brennan graduated from medical school in 1965, 61 years ago.
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