Dr. Mary J. Hagan, DO
- Medicare services, 2024
- 799
- Medicare patients, 2024
- 494
- Part D claims, 2024
- 290
- Hospital affiliations
- 3
- Industry payments
- $672
- Practice address
- 1000 Waterman Way, Tavares, FL 32778
- Practice phone
- Call (352) 253-3368
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hagan's professional email, personal email and mobile number
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Dr. Mary J. Hagan is an emergency medicine physician in Tavares, Florida
Dr. Hagan practices at AdventHealth Waterman in Tavares, Florida, part of AdventHealth.
Dr. Hagan's NPI, 1194005058, was assigned on August 24, 2011. Dr. Hagan holds Florida license OS13345.
- NPI
- 1194005058NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042448250
- NPI enumeration date
- August 24, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (352) 253-3368
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary J. Hagan practices at AdventHealth Waterman in Tavares, Florida
Dr. Hagan's primary practice is AdventHealth Waterman, at 1000 Waterman Way, Tavares, FL 32778 in Lake County. The practice phone is (352) 253-3368.
- AdventHealth Waterman1000 Waterman Way, Tavares, FL 32778 · Lake CountyPhone(352) 253-3368
Source: Dmand AI Affiliation Data
Dr. Mary J. Hagan is affiliated with 3 sites of care and 1 medical group
Dr. Hagan's primary practice is AdventHealth Waterman in Tavares, Florida, part of AdventHealth. Dr. Hagan is also affiliated with AdventHealth Orlando. The medical group on file is Florida Emergency Physicians (FEP). Dmand AI also links Dr. Hagan to 1 more hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary J. Hagan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hagan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| AdventHealth Waterman | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary J. Hagan is one of 3,847 emergency medicine physicians in Florida
Emergency medicine is Dr. Hagan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Hagan is licensed in Florida.
Specialties and state licenses
- Emergency medicine, FloridaPrimary
Emergency medicine physicians near Dr. Hagan
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
Dr. Mary J. Hagan billed Medicare for 799 services in 2024
CMS data shows 799 Medicare services from Dr. Hagan across 6 procedure codes in 2024, for 494 Medicare patients. Medicare paid $76,454 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hagan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4652024: 54417%
- Tests and treatments
- 2023: 1662024: 25554%
Dr. Hagan compared with the Florida median for emergency medicine physicians, 2024
- Dr. Hagan
- Florida median
- Medicare services
- 799vs 3082.6 times
- Medicare patients
- 494vs 27778% above
- Part D claims
- 170vs 842.0 times
Medians across 3,699 emergency medicine physicians in Florida with Dmand AI profiles that report each measure.
Dr. Hagan'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hagan and other emergency medicine physicians in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary J. Hagan treated 494 Medicare patients in 2024, average age 79
CMS counts 494 Medicare patients who saw Dr. Hagan in 2024. The largest group is 75 to 84, with 209 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 2.29, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hagan's median patient age at 56, with 59% women.
Dr. Hagan's Medicare patients by age, 2024
Dr. Hagan's Medicare patients by sex, 2024
- Women26754%
- Men22746%
Chronic conditions among Dr. Hagan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis62%
- Ischemic heart disease58%
- Chronic kidney disease46%
- Mood disorders43%
- Depression41%
- Anxiety40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hagan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary J. Hagan wrote 290 Medicare Part D claims in 2024
In 2024, Dr. Hagan wrote 290 Medicare Part D claims for 189 patients. 93% of them were for generic drugs. CMS names the drug for 170 of them, across 9 drugs with 11 or more claims each, at $1,404 in total drug cost. In 2023, CMS named 176 claims across 8 drugs.
Dr. Hagan's Part D claims by kind of drug, 2024
- Generic270 claims93%
- Brand-name20 claims7%
Dr. Hagan'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 Dr. Hagan's Part D claims, 2024
- Opioids12%35 of 290 claims
- Antibiotics31%90 of 290 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: 1762024: 1703%
Drugs named by CMS: 9 in 2024, 8 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
How Dr. Mary J. Hagan takes part in Medicare
Dr. Hagan 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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Dr. Mary J. Hagan received $672 in industry payments from 2016 to 2020
CMS Open Payments shows 9 general payments to Dr. Hagan from 7 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $125.
General payments to Dr. Hagan by program year, 2016 to 2020
Companies that paid Dr. Hagan the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mary J. Hagan'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) |
| 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. Mary J. Hagan
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. Mary J. Hagan's NPI number?
Dr. Mary J. Hagan's NPI number is 1194005058. It was assigned on August 24, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary J. Hagan?
Dr. Mary J. Hagan is an emergency medicine physician in Tavares, Florida. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mary J. Hagan practice?
Dr. Hagan practices at 1000 Waterman Way, Tavares, FL 32778. Dr. Hagan's primary practice is AdventHealth Waterman in Tavares, Florida, part of AdventHealth. Dmand AI also links Dr. Hagan to 1 hospital.
What is Dr. Mary J. Hagan's office phone number?
The practice phone on file for Dr. Hagan is (352) 253-3368.
What is Dr. Mary J. Hagan's medical license number?
Dr. Hagan holds Florida license OS13345.
Which hospitals is Dr. Mary J. Hagan affiliated with?
Dr. Hagan practices at AdventHealth Waterman in Tavares, Florida. Dr. Hagan is also affiliated with AdventHealth Orlando. Dmand AI links Dr. Hagan to 1 more hospital.
What medical group is Dr. Mary J. Hagan part of?
Dr. Hagan is linked to Florida Emergency Physicians (FEP).
Does Dr. Mary J. Hagan accept Medicare?
Yes. CMS data shows Dr. Hagan billed Medicare for 799 services in 2024, and Dr. Hagan accepts Medicare assignment.
How many Medicare patients does Dr. Mary J. Hagan see?
CMS counts 494 Medicare patients who saw Dr. Hagan in 2024, with an average age of 79.
What services does Dr. Mary J. Hagan bill to Medicare?
In 2024, Dr. Hagan's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
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What drugs does Dr. Mary J. Hagan prescribe most?
In 2024 Medicare Part D data, Dr. Hagan's most prescribed drugs by claims were Prednisone, Cephalexin and Ondansetron HCl.
Has Dr. Mary J. Hagan received payments from drug or device companies?
CMS Open Payments shows $672 in general payments to Dr. Hagan from 7 companies from 2016 to 2020. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Mary J. Hagan been practicing?
Dr. Hagan graduated from medical school in 2011, 15 years ago.
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