Dr. John C. Flanagan, MD
- Medicare services, 2024
- 59
- Medicare patients, 2024
- 158
- Hospital affiliations
- 3
- Industry payments
- $644
- Medical groups
- 3
- Practice address
- 1 Shircliff Way, Jacksonville, FL 32204
- Practice phone
- Call (904) 308-7300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Flanagan'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 C. Flanagan is an anesthesiologist in Jacksonville, Florida
Dr. Flanagan practices at Ascension St. Vincent's Riverside in Jacksonville, Florida, part of Ascension Health Alliance.
Dr. Flanagan's NPI, 1144215443, was assigned on September 13, 2005. Dr. Flanagan graduated from Wake Forest School of Medicine in 2000. Dr. Flanagan holds Florida license ME89761.
- NPI
- 1144215443NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658345350
- NPI enumeration date
- September 13, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (904) 308-7300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John C. Flanagan practices at Ascension St. Vincent's Riverside in Jacksonville, Florida
Dr. Flanagan's primary practice is Ascension St. Vincent's Riverside, at 1 Shircliff Way, Jacksonville, FL 32204 in Duval County. The practice phone is (904) 308-7300.
- Ascension St. Vincent's Riverside1 Shircliff Way, Jacksonville, FL 32204 · Duval CountyPhone(904) 308-7300
Source: Dmand AI Affiliation Data
Dr. John C. Flanagan is affiliated with 5 sites of care and 3 medical groups
Dr. Flanagan's primary practice is Ascension St. Vincent's Riverside in Jacksonville, Florida, part of Ascension Health Alliance. Dr. Flanagan is also affiliated with Ascension St. Vincent's Clay County. The medical group on file is Sheridan Healthcare. Dmand AI also links Dr. Flanagan to 1 more hospital, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John C. Flanagan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Flanagan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension St. Vincent's Riverside | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John C. Flanagan is one of 3,063 anesthesiologists in Florida
Anesthesiology is Dr. Flanagan's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Flanagan is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Flanagan's licenses on file in 3 states: Florida, North Carolina and Virginia.
Specialties and state licenses
- Anesthesiology, FloridaPrimary
- North Carolina license
- Virginia license
Anesthesiologists near Dr. Flanagan
Counts of anesthesiologists 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 C. Flanagan billed Medicare for 59 services in 2024
CMS data shows 59 Medicare services from Dr. Flanagan across 4 procedure codes in 2024, for 158 Medicare patients. Medicare paid $5,456 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Flanagan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 942024: 4849%
- Surgery
- 2023: 02024: 11
Dr. Flanagan compared with the Florida median for anesthesiologists, 2024
- Dr. Flanagan
- Florida median
- Medicare services
- 59vs 7420% below
- Medicare patients
- 158vs 12032% above
Medians across 2,878 anesthesiologists in Florida with Dmand AI profiles that report each measure.
Dr. Flanagan'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.
Need commercial claims for Dr. Flanagan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Flanagan and other anesthesiologists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John C. Flanagan treated 158 Medicare patients in 2024, average age 74
CMS counts 158 Medicare patients who saw Dr. Flanagan in 2024. The largest group is 65 to 74, with 77 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.88, 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. Flanagan's median patient age at 65, with 49% women.
Dr. Flanagan's Medicare patients by age, 2024
Dr. Flanagan's Medicare patients by sex, 2024
- Women7950%
- Men7950%
Chronic conditions among Dr. Flanagan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Ischemic heart disease44%
- Diabetes42%
- Chronic kidney disease36%
- Atrial fibrillation32%
- Anxiety29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Flanagan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. John C. Flanagan takes part in Medicare
Dr. Flanagan 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. John C. Flanagan received $644 in industry payments from 2017 to 2025
CMS Open Payments shows 7 general payments to Dr. Flanagan from 6 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Abiomed paid the most, $224.
General payments to Dr. Flanagan by program year, 2017 to 2025
Companies that paid Dr. Flanagan the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John C. Flanagan graduated from Wake Forest School of Medicine
Dr. Flanagan graduated from Wake Forest School of Medicine in 2000.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. John C. Flanagan accepts plans from 3 insurance carriers
Dr. Flanagan is in network with 3 carriers, including Excellus BlueCross BlueShield, CMS Medicare and GA State Medicaid. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- CMS Medicare
- GA State Medicaid
Plan types Dr. Flanagan accepts, by number of carriers
- Medicare2
- EPO1
- HMO1
- Medicaid1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. John C. Flanagan'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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Dr. John C. Flanagan
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 C. Flanagan's NPI number?
Dr. John C. Flanagan's NPI number is 1144215443. It was assigned on September 13, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John C. Flanagan?
Dr. John C. Flanagan is an anesthesiologist in Jacksonville, Florida. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. John C. Flanagan practice?
Dr. Flanagan practices at 1 Shircliff Way, Jacksonville, FL 32204. Dr. Flanagan's primary practice is Ascension St. Vincent's Riverside in Jacksonville, Florida, part of Ascension Health Alliance. Dmand AI also links Dr. Flanagan to 1 hospital, 2 group practices and clinics and 2 medical groups.
What is Dr. John C. Flanagan's office phone number?
The practice phone on file for Dr. Flanagan is (904) 308-7300.
What is Dr. John C. Flanagan's medical license number?
Dr. Flanagan holds Florida license ME89761, one of the licenses on file in 3 states.
Which states has Dr. John C. Flanagan been licensed in?
Dmand AI has state licenses on file for Dr. Flanagan in Florida (2004 to 2026), North Carolina (2003 to 2025) and Virginia (2000 to 2004).
Which hospitals is Dr. John C. Flanagan affiliated with?
Dr. Flanagan practices at Ascension St. Vincent's Riverside in Jacksonville, Florida. Dr. Flanagan is also affiliated with Ascension St. Vincent's Clay County. Dmand AI links Dr. Flanagan to 1 more hospital.
What medical group is Dr. John C. Flanagan part of?
Dr. Flanagan is linked to Sheridan Healthcare. Dmand AI links Dr. Flanagan to 2 more medical groups.
Does Dr. John C. Flanagan accept Medicare?
Yes. CMS data shows Dr. Flanagan billed Medicare for 59 services in 2024, and Dr. Flanagan accepts Medicare assignment.
How many Medicare patients does Dr. John C. Flanagan see?
CMS counts 158 Medicare patients who saw Dr. Flanagan in 2024, with an average age of 74.
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Is Dr. John C. Flanagan board certified?
Yes. Dr. Flanagan is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. John C. Flanagan bill to Medicare?
In 2024, Dr. Flanagan's most billed Medicare services were anesthesia (00731), anesthesia (00145) and anesthesia (00142).
Where did Dr. John C. Flanagan go to medical school?
Dr. Flanagan graduated from Wake Forest School of Medicine in 2000.
Has Dr. John C. Flanagan received payments from drug or device companies?
CMS Open Payments shows $644 in general payments to Dr. Flanagan from 6 companies from 2017 to 2025. The largest total came from Abiomed.
How long has Dr. John C. Flanagan been practicing?
Dr. Flanagan graduated from medical school in 2000, 26 years ago.
What insurance does Dr. John C. Flanagan accept?
Dr. Flanagan is in network with 3 carriers, including Excellus BlueCross BlueShield, CMS Medicare and GA State Medicaid. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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