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Edit this profileAt a glance
- 1405 Montgomery Dr, Santa Rosa, CA 95405
About Dr. Mazur
Kai U. Mazur, M.D. is a healthcare provider in Santa Rosa, CA specializing in orthopaedic hand surgery. Kai is also listed as specializing in orthopaedic surgery. According to Medicare claims data, Kai cared for 1,944 Medicare patients across 2,890 services. The services billed most often include injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg, x-ray of hand, minimum of 3 views, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1558304188.
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
- (707) 546-1922
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1405 MONTGOMERY DR
Santa Rosa, CA 95405
Conditions Commonly Evaluated or Treated
Within Hand 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
Arthritis & Joints
- Bone Spur on Finger
- Hand Arthritis
- Kienbock's Disease
- Stiff Fingers
- Hand and Wrist Arthritis
- Wrist sprain
Congenital
- Extra or Webbed Fingers
Fractures & Injuries
- Boxer's Fracture
- Broken Scaphoid Bone
- Dislocated Finger
- Black Toenail
- Hand and finger fractures
- Jammed Finger
- Severed Finger
- Torn Thumb Ligament
- Wrist Cartilage Tear
- Wrist fracture
Injuries
- Boxer's Knuckle
- Crushed Hand Injury
- Foreign Object in Hand
- Hand Compartment Syndrome
- Jersey Finger
- Sprained Finger
Lumps & Bumps
- Bone Tumor in Hand
- Finger Cyst
Lumps & Masses
- Hand Lump
- Ganglion Cyst In Hand Or Wrist
Nails
- Nail Bed Injury
Nerves
- Cut Nerve in Hand
- Hand Neuroma
- Hand Numbness and Tingling
- Hand Weakness
- Pinched Nerve in Wrist
- Wrist Drop
- Carpal tunnel
- Cubital tunnel syndrome
Tendons
- Intersection Syndrome
- Swan Neck Deformity
- De Quervain tenosynovitis
- Dupuytren's contracture
- Golfer's elbow
- Mallet Finger
- Tennis elbow
- Torn Hand Tendon
- Trigger finger
Circulation
Infections
- Infected Finger
Procedures & services
Bone surgery
- Ulnar Shortening Surgery
Cyst & Lump Removal
- Ganglion Cyst Removal
- Removal of a soft-tissue mass
Fracture Repair
- Boxer's Fracture Fixation
- Broken Finger Surgery
- Scaphoid Fracture Surgery
- Wrist fracture fixation
Injections
- Cortisone Shot for Finger
- Cortisone Shot for Wrist
- Xiaflex Injection for Dupuytren's
Injections & Therapy
- Custom Hand Splinting
- Mallet Finger Splinting
- PRP Shot for Wrist or Elbow
- Hand therapy
- Tendon Sheath Injection
Joint surgery
- Finger Bone Spur Removal
- Thumb Base Joint Replacement
Joint Surgery
- Finger Joint Fusion
- Finger Joint Replacement
- Thumb Arthritis Surgery
- Wrist Arthroscopy
- Wrist Cartilage Repair
- Wrist Fusion
- Thumb Ligament Repair
Minor procedures
- Finger Dislocation Reset
- Foreign Object Removal from Hand
Nail procedures
- Nail Bed Repair
- Blood Under Toenail Drainage
Nerve surgery
- Hand Neuroma Surgery
- Minimally Invasive Carpal Tunnel Release
Orthopedics
Pain management
- Wrist Denervation Surgery
Spine & Orthopedics
Tendon surgery
- Jersey Finger Repair
- Tendon Scar Tissue Release
Tendon Surgery
- Tendon Repair Surgery
- Tendon Transfer Surgery
- Thumb Tendon Release
- Dupuytren contracture surgery
- Tennis Elbow Surgery
- Trigger finger release
Trauma & Reconstruction
- Drainage of Finger Infection
- Extra Finger Removal
- Fingertip Reconstruction
- Severed Finger Reattachment
- Webbed Finger Separation
Wound repair
- Skin Graft for Hand Wound
Nerve Surgery
Procedures Most Often Billed to Medicare
2,890 services · 1,944 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection into tendon or ligament | Procedure | 20550 |
146 | More often than most peers in Orthopaedic Hand Surgery |
| Aspiration and/or injection of fluid from medium joint | Procedure | 20605 |
81 | More than most peers in Orthopaedic Hand Surgery |
| Release and/or relocation of hand nerve | Procedure | 64721 |
78 | More than most peers in Orthopaedic Hand Surgery |
| Incision of tendon covering of finger | Procedure | 26055 |
52 | More often than most peers in Orthopaedic Hand Surgery |
| Aspiration and/or injection of fluid from small joint | Procedure | 20600 |
40 | More often than most peers in Orthopaedic Hand Surgery |
| Aspiration and/or injection of cyst of tendon | Procedure | 20612 |
31 | More often than most peers in Orthopaedic Hand Surgery |
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
31 | As often as other peers in Orthopaedic Hand Surgery |
| Transfer of tendon to back of hand | Procedure | 26480 |
26 | More often than most peers in Orthopaedic Hand Surgery |
| Removal of bone joints between wrist and fingers | Procedure | 25447 |
20 | More often than most peers in Orthopaedic Hand Surgery |
| Injection of carpal tunnel | Procedure | 20526 |
20 | As often as other peers in Orthopaedic Hand 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 orthopaedic hand surgeons at this location 1
Same specialty, same street address — most likely the same department or group.
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 — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Injection into tendon or ligament 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Kai U. Mazur specialize in?
Kai U. Mazur is an orthopaedic hand surgeon in Santa Rosa, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopaedic Hand Surgery”.
NPI registry
Where is Kai U. Mazur located?
Kai U. Mazur is listed at 1405 Montgomery Dr, Santa Rosa, CA 95405. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Kai U. Mazur's phone number?
The number on file is (707) 546-1922. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Kai U. Mazur's NPI number?
Kai U. Mazur's National Provider Identifier is 1558304188. 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 Kai U. Mazur train?
Kai U. Mazur attended Other, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Kai U. Mazur been practicing?
Kai U. Mazur has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Kai U. Mazur do most often?
According to Medicare billing data, Kai U. Mazur performs procedures including injection into tendon or ligament, aspiration and/or injection of fluid from medium joint and release and/or relocation of hand nerve; reads or performs imaging such as x-ray of hand, minimum of 3 views and x-ray of wrist, minimum of 3 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Kai U. Mazur confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Kai U. Mazur. If this is you, claiming it is free.
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