MR. BRIAN F FLANAGAN (MD) – Anesthesiology Physician, NPI 1225017767
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
6,371 ANESTHESIOLOGY in CA
Provider Addresses for MR. BRIAN F FLANAGAN (MD)
726 Fourth Street
Marysville, CA 959015656
Phone: (530) 749-4300
Fax: (530) 751-4906
Type: Location
Stockton Post Office, 401, North San Joaquin Street, Stockton, San Joaquin County, California, 95202, United States
STOCKTON, CA 952670096
Phone: (209) 956-7725
Fax: (209) 956-7733
Type: Mailing
Mercy San Juan Medical Center, 6501, Coyle Avenue, Sacramento County, California, 95608, United States
CARMICHAEL, CA 956080306
Phone: (916) 537-5000
Fax: (916) 851-2884
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $54.
Total Amount is formed as General ($54) + Research ($0) + Ownership ($0) = $54.
Last reported payment date: 2023-05-18 • Largest payer in this snapshot: Ethicon US, LLC ($33).
Total Amount
$54
General + Research + Ownership
Payments
2
Total payment records
General Amount
$54
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-05-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Ethicon US, LLC | $33 |
| Carl Zeiss Meditec USA, Inc. | $21 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2009-04-03
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20090403000430 | I | Anesthesiology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 00142 | Anesthesia for lens surgery | 43 | 41 | $0 |
| 64415 | Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) | 22 | 22 | $0 |
| 00790 | Anesthesia for other procedure on upper abdomen | 20 | 19 | $0 |
| 01638 | Anesthesia for open or endoscopic total shoulder joint replacement | 19 | 19 | $0 |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 18 | 18 | $0 |
Insurance plans in this area (ZIP 95901)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ANESTHESIOLOGY | CA | 36620 | Insertion of arterial catheter for blood sampling or infusion, accessed through the skin | 33 | 33 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| P S Y C H I A T R Y | CA | |
| Internal Medicine | CA | |
| Critical Care (Intensivists), Internal Medicine | CA | |
| P A T H O L O G Y | CA | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Certified Registered Nurse Anesthetist (Crna) | AZ | |
| Diagnostic Radiology | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| A N E S T H E S I O L O G Y | CA | |
| Diagnostic Radiology | CA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.