Physician Profile
Isabella R. Riordan, MD
Unclaimed ProfileAbout Dr. Riordan
Isabella R. Riordan, MD practices anesthesiology in O Fallon, MO. Isabella is a 2014 graduate of Loyola University of Chicago, Stritch School of Medicine. According to Medicare claims data, the services billed most often include injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve). The provider's National Provider Identifier (NPI) is 1245644525.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (800) 862-9980
- Email not available
Practice Locations
2 PROGRESS POINT PKWY DEPT ANESTHESIOLOGY
O Fallon, MO 63368
Conditions Commonly Evaluated or Treated
Within Anesthesiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Anesthesia complications
Back & spine
- Arthritis of the spine
- Degenerative disc disease
- Failed back surgery syndrome
- Herniated disc
- Lower back pain
- Neck pain
- Sacroiliac joint pain
- Spinal compression fracture
- Spinal stenosis
- Spondylolisthesis
- Tailbone pain
- Upper Back Pain
Chronic pain
Facial & jaw pain
General pain
Head & facial pain
Headaches
Joint pain
Mental health
Muscle pain
Musculoskeletal pain
Nerve pain
- Abdominal wall nerve pain
- Complex Regional Pain Syndrome
- Foot Numbness and Tingling
- Groin nerve pain after hernia surgery
- Nerve damage after surgery
- Neuropathy
- Outer thigh burning and numbness
- Phantom limb pain
- Pinched nerve
- Piriformis syndrome
- Sciatica
- Shingles pain
- Tarsal Tunnel Syndrome
Pelvic pain
Post-surgery recovery
Sedation & anesthesia
Spine pain
Procedures & services
Ablation
Head & facial procedures
Implants & devices
- Pain pump implant
- Pain pump refill and check
- Peripheral nerve stimulator implant
- Spinal cord stimulator implant
- Spinal cord stimulator trial
Infusion therapies
Infusion therapy
Joint injections
Muscle injections
Nerve blocks
- Abdominal Nerve Block
- Celiac Plexus Nerve Block
- Ganglion impar block
- Groin nerve block
- Pudendal nerve block
- Superior hypogastric plexus block
Nerve injections
- Celiac plexus block
- Lumbar sympathetic block
- Nerve block
- Rib nerve block
- Shoulder nerve block
- Stellate ganglion block
Nerve procedures
Pain relief procedures
Regional anesthesia
Sedation
Sedation & anesthesia
- General anesthesia
- Labor epidural
- Moderate dental sedation
- Pre-surgery anesthesia consult
- Sedation for dental work
- Spinal spinal block
Spine injections
- Epidural steroid injection
- Facet joint injection
- Medial branch block
- Sacroiliac joint injection
- Tailbone epidural injection
Spine procedures
Procedures Most Often Billed to Medicare
17 services · 17 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | Procedure | 64447 |
17 | As often as other peers in Anesthesiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other anesthesiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 9 related providers in 2 groups
Also performs Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 8
Providers in MO who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Riordan?
Dr. Riordan is an anesthesiologist in O Fallon, MO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Anesthesiology”.
NPI registry
What is Dr. Riordan's address?
Dr. Riordan is listed at 2 Progress Point Pkwy Dept Anesthesiology, O Fallon, MO 63368. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Riordan?
The number on file is (800) 862-9980. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Riordan?
Dr. Riordan's National Provider Identifier is 1245644525. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Riordan train?
Dr. Riordan attended Loyola University of Chicago, Stritch School of Medicine, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Riordan have?
Dr. Riordan has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Riordan perform?
According to Medicare billing data, Dr. Riordan performs procedures including injection of anesthetic agent and/or steroid into thigh nerve. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Riordan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Riordan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.