JOHN C FLANAGAN MD
NPI 1144215443
Anesthesiology in Jacksonville, FL

Q: What is John Flanagan's NPI number?

The NPI number for John Flanagan is 1144215443. It was assigned to this individual provider in the NPPES registry on September 13, 2005.

Q: What is John Flanagan's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for John Flanagan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 13, 2005PECOS EnrolledAccepts Medicare Assignment

1800 BARRS ST, JACKSONVILLE, FL 32204(904) 387-4030(904) 381-9808 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About John C Flanagan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN C FLANAGAN MD (NPI 1144215443) is an individual anesthesiology provider in Jacksonville, Florida, licensed in Florida (ME89761) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Ascension St Vincent's Riverside, and is a graduate of Other (2000).

NPPES Registry Identity

NPI1144215443

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameJOHN C FLANAGANCredential: MD

Location Address1800 BARRS STJacksonville, FL 32204-4704

Mailing Address2165 Herschel StJacksonville, FL 32204-3819 · (904) 387-4030 · Fax (904) 381-9808

Phone(904) 387-4030

Fax(904) 381-9808

Sole ProprietorNo

Medical School CMSOtherGraduated 2000

Enumeration DateSeptember 13, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1144215443 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in FL · ME89761

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

1800 BARRS ST, Jacksonville, FL 32204

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Other Identifiers 1

Other47641FL · Blue Cross Blue Shield

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, Cigna HealthCare of Florida, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John C Flanagan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1658345350

PECOS Enrollment IDI20040819001112

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show John Flanagan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

North Florida Anesthesia Consultants Inc

0.3 mi

Anesthesiology

2731 PARK ST
Jacksonville, FL 32205

Reassigned Medicare billing, Florida enrollment
177 clinicians in this Medicare group

NPI 1194397489 (954) 939-5000

Jacksonville Beaches Anesthesia Associates, Inc.

18 mi

Anesthesiology

3316 3RD ST S STE 200
Jacksonville Beach, FL 32250

Reassigned Medicare billing, Florida enrollment
45 clinicians in this Medicare group

NPI 1174781744 (954) 939-5000

Sheridan Healthcorp Inc

62 mi

Anesthesiology

4600 NEWBERRY RD
Gainesville, FL 32607

Reassigned Medicare billing, Florida enrollment
1,973 clinicians in this Medicare group

NPI 1740852151 (877) 328-1119

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

21 services21 patients

Anesthesia for retinal surgery 00145

Anesthesia for retinal surgery involves using medications to numb your eye and surrounding area. This prevents pain and discomfort during the procedure. You may also receive medication to help you relax. The anesthesia can be local (just your eye) or general (you're asleep).

14 services14 patients

Anesthesia for lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

13 services12 patients

Insertion of artery tube for blood sampling or infusion through skin 36620

This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.

11 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ascension St Vincent's Riverside

Acute Care Hospitals · Jacksonville, FL

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number100040

Location1 Shircliff WayJacksonville, FL 32204 · Duval County

Emergency services

Ascension St Vincent's Clay County

Acute Care Hospitals · Middleburg, FL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number100321

Location1670 St Vincents WayMiddleburg, FL 32068 · Clay County

Emergency services Birthing friendly

Ascension St Vincent's St Johns County

Acute Care Hospitals · St Johns, FL

OwnershipVoluntary non-profit - Private

CMS Certification Number100361

Location205 Trinity WaySt Johns, FL 32259 · St. Johns County

Emergency services

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ZACHARY EDWARD BROWN MD

Radiology (Diagnostic Radiology)

1800 BARRS ST, RADIOLOGY DEPT
JACKSONVILLE, FL 32204

Duval County (904) 308-7300

DR. RONALD P CARZOLI JR. MD

Pediatrics (Neonatal-Perinatal Medicine)

1800 BARRS ST, ST VINCENT'S MEDICAL CENTER
JACKSONVILLE, FL 32204

Duval County (904) 308-7994

WILLIAM T SMITH JR. MD

Anesthesiology