John P. Magnan
- Medicare services, 2024
- 512
- Medicare patients, 2024
- 492
- Part D claims, 2024
- 109
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Practice address
- 5 Perryridge Rd, Greenwich, CT 06830
- Practice phone
- Call (203) 863-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John Magnan's professional email, personal email and mobile number
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John P. Magnan is an emergency medicine physician in Greenwich, Connecticut
John Magnan practices at Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System.
John Magnan's NPI, 1174546659, was assigned on July 25, 2006. John Magnan graduated from New York Medical College in 2002. John Magnan holds New York license 233265.
- NPI
- 1174546659NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456356062
- NPI enumeration date
- July 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 863-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John P. Magnan practices at Greenwich Hospital in Greenwich, Connecticut
John Magnan's primary practice is Greenwich Hospital, at 5 Perryridge Rd, Greenwich, CT 06830 in Fairfield County. The practice phone is (203) 863-3000.
- Greenwich Hospital5 Perryridge Rd, Greenwich, CT 06830 · Fairfield CountyPhone(203) 863-3000
Source: Dmand AI Affiliation Data
John P. Magnan is affiliated with 1 site of care and 1 medical group
John Magnan's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System. The medical group on file is Greenwich Hospital. John Magnan's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John P. Magnan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Magnan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Greenwich Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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John P. Magnan is one of 683 emergency medicine physicians in Connecticut
Emergency medicine is John Magnan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. John Magnan is licensed in New York.
Specialties and state licenses
- Emergency medicine, New YorkPrimary
Emergency medicine physicians near John Magnan
Counts of emergency medicine physicians 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 P. Magnan billed Medicare for 512 services in 2024
CMS data shows 512 Medicare services from John Magnan across 4 procedure codes in 2024, for 492 Medicare patients. Medicare paid $56,680 for them. Every service was in a facility, such as a hospital, rather than an office.
John Magnan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4462024: 51215%
John Magnan compared with the Connecticut median for emergency medicine physicians, 2024
- John Magnan
- Connecticut median
- Medicare services
- 512vs 2432.1 times
- Medicare patients
- 492vs 25097% above
- Part D claims
- 32vs 4833% below
Medians across 695 emergency medicine physicians in Connecticut with Dmand AI profiles that report each measure.
John Magnan's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
John P. Magnan treated 492 Medicare patients in 2024, average age 80
CMS counts 492 Medicare patients who saw John Magnan in 2024. The largest group is 75 to 84, with 180 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.73, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts John Magnan's median patient age at 71, with 57% women.
John Magnan's Medicare patients by age, 2024
John Magnan's Medicare patients by sex, 2024
- Women26554%
- Men22746%
Chronic conditions among John Magnan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Anxiety41%
- Atrial fibrillation39%
- Mood disorders38%
- Depression35%
- Ischemic heart disease34%
Share of Medicare patients with each condition. A patient can have several.
John Magnan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women57%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John P. Magnan wrote 109 Medicare Part D claims in 2024
In 2024, John Magnan wrote 109 Medicare Part D claims for 80 patients. 93% of them were for generic drugs. CMS names the drug for 32 of them, across 2 drugs with 11 or more claims each, at $395 in total drug cost. In 2023, CMS named 15 claims across 1 drug.
John Magnan's Part D claims by kind of drug, 2024
- Generic101 claims93%
- Brand-name and other8 claims7%
John Magnan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in John Magnan's Part D claims, 2024
- Antibiotics43%47 of 109 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 152024: 32113%
Drugs named by CMS: 2 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
John P. Magnan scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for John Magnan for performance year 2024, reported as part of a group. John Magnan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
John Magnan's MIPS scores, performance year 2024
- 91of 100Final score
- 86.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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John P. Magnan graduated from New York Medical College
John Magnan graduated from New York Medical College in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John P. Magnan'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 DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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)Clinician Public Reporting: Overall MIPS Performance (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 P. Magnan
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 P. Magnan's NPI number?
John P. Magnan's NPI number is 1174546659. It was assigned on July 25, 2006, and it is active in the NPI Registry.
What does John P. Magnan specialize in?
John P. Magnan is an emergency medicine physician in Greenwich, Connecticut. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does John P. Magnan practice?
John Magnan practices at 5 Perryridge Rd, Greenwich, CT 06830. John Magnan's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System.
What is John P. Magnan's office phone number?
The practice phone on file for John Magnan is (203) 863-3000.
What is John P. Magnan's medical license number?
John Magnan holds New York license 233265.
Which hospitals is John P. Magnan affiliated with?
John Magnan practices at Greenwich Hospital in Greenwich, Connecticut.
What medical group is John P. Magnan part of?
John Magnan is linked to Greenwich Hospital.
Does John P. Magnan accept Medicare?
Yes. CMS data shows John Magnan billed Medicare for 512 services in 2024, and John Magnan accepts Medicare assignment.
What is John P. Magnan's MIPS score?
John Magnan's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does John P. Magnan see?
CMS counts 492 Medicare patients who saw John Magnan in 2024, with an average age of 80.
Show 4 more questionsShow fewer questions
What services does John P. Magnan bill to Medicare?
In 2024, John Magnan's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and emergency department visit (99283).
Where did John P. Magnan go to medical school?
John Magnan graduated from New York Medical College in 2002.
What drugs does John P. Magnan prescribe most?
In 2024 Medicare Part D data, John Magnan's most prescribed drugs by claims were Cefuroxime and Ibuprofen.
How long has John P. Magnan been practicing?
John Magnan graduated from medical school in 2002, 24 years ago.
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