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Edit this profileAt a glance
- 635 Lassen Ln, Mount Shasta, CA 96067
About Dr. O'sullivan
Based in Mount Shasta, CA, Glen S. O'Sullivan, M.D. is listed in the NPI registry under orthopedic surgery. Glen is also listed as specializing in specialist. According to Medicare claims data, Glen cared for 1,356 Medicare patients across 2,481 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, injection, triamcinolone acetonide, not otherwise specified, 10 mg, and injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level. NPI 1972504652 identifies this record in the national registry.
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
- (866) 668-3597
- Email not available
Practice Locations
635 LASSEN LN
Mount Shasta, CA 96067
Conditions Commonly Evaluated or Treated
Within Orthopedic Surgery 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
Most searched conditions
- Arthritis
- Carpal tunnel
- Rotator cuff tear
- Sciatica
- Torn Achilles tendon
- Torn ACL
- Torn meniscus
Elbow, hand, and wrist
- Cubital tunnel syndrome
- Golfer's elbow
- Tennis elbow
- Trigger finger
- Wrist fracture
Foot and ankle
- Ankle fracture
- Ankle sprain
- Heel pain
Hip
- Hip labral tear
- Lateral hip pain and trochanteric bursitis
Shoulder
- Broken collarbone
- Frozen shoulder
- Shoulder impingement
- Dislocated joint
Sports and soft tissue
- Stress fracture
Trauma and bone
- Bone fractures
- Osteoporosis
Foot & Ankle
- Bunions
Spine
Procedures & services
Most searched procedures
- Achilles tendon repair
- ACL reconstruction
- Carpal tunnel surgery
- Hip replacement
- Knee replacement
Evaluation and nonsurgical
- Cast placement and management
Arthroscopy
- Hip arthroscopy
- Rotator cuff repair
- Shoulder arthroscopy
Foot & Ankle
- Ankle Ligament Surgery
- Hammertoe Surgery
Foot and ankle
- Ankle arthroscopy
- Ankle fusion
- Bunion surgery
Hand & Wrist
- De Quervain's Release
Hand and upper extremity
- Cubital tunnel decompression
- Dupuytren contracture surgery
- Trigger finger release
Injections & Non-Surgical
- Knee Joint Injection
- PRP Injection
Injections & pain relief
- Cortisone Shot for Joint Pain
Joint replacement
- Partial knee replacement
- Reverse shoulder replacement
- Revision joint replacement
- Shoulder replacement
Knee
- Kneecap Stabilization Surgery
- Meniscus Surgery
Shoulder surgery
- Shoulder labrum repair
Trauma & Fractures
- Broken Hip Surgery
- Hardware Removal Surgery
Trauma and fixation
- Open reduction and internal fixation
Procedures Most Often Billed to Medicare
2,481 services · 1,356 patients · 24 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level | Procedure | 64484 |
156 | More often than most peers in Orthopedic Surgery |
| Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level | Procedure | 64483 |
135 | More often than most peers in Orthopedic Surgery |
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
67 | As often as other peers in Orthopedic Surgery |
| Injection of lower or sacral spine facet joint using imaging guidance, single level | Procedure | 64493 |
34 | As often as other peers in Orthopedic Surgery |
| Injection of lower or sacral spine facet joint using imaging guidance, second level | Procedure | 64494 |
33 | As often as other peers in Orthopedic Surgery |
| Insertion of cage or mesh device to spine bone and disc space during spine fusion | Procedure | 22853 |
25 | Less often than most peers in Orthopedic Surgery |
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint | Procedure | 64635 |
21 | Less often than most peers in Orthopedic Surgery |
| Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance | Procedure | 27096 |
20 | Less often than most peers in Orthopedic Surgery |
| Placement of device to stabilize or reduce pressure in lower spine in 1 disc space | Procedure | 22867 |
19 | Too few peers to compare |
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint | Procedure | 64636 |
18 | Less often than most peers in Orthopedic Surgery |
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 orthopedic surgeons at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1986 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Glen S. O'Sullivan?
Glen S. O'Sullivan is an orthopedic surgeon in Mount Shasta, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopedic Surgery”.
NPI registry
What is Glen S. O'Sullivan's address?
Glen S. O'Sullivan is listed at 635 Lassen Ln, Mount Shasta, CA 96067. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Glen S. O'Sullivan?
The number on file is (866) 668-3597. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Glen S. O'Sullivan's NPI number?
Glen S. O'Sullivan's National Provider Identifier is 1972504652. 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 Glen S. O'Sullivan train?
Glen S. O'Sullivan attended Other, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How long has Glen S. O'Sullivan been practicing?
Glen S. O'Sullivan has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What procedures does Glen S. O'Sullivan perform?
According to Medicare billing data, Glen S. O'Sullivan performs procedures including injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level, injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level and aspiration and/or injection of fluid from large joint; reads or performs imaging such as x-ray of lower and sacral spine, 2-3 views and x-ray of pelvis, 1-2 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Glen S. O'Sullivan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Glen S. O'Sullivan. If this is you, claiming it is free.
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Guide.md listings do not constitute medical advice or an endorsement.