Are you Dr. Janzen? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 10800 Magnolia Avenue,, Kaiser Permanente Riverside Medical Center, Riverside, CA 92505
About Dr. Janzen
Mark L. Janzen, MD practices vascular surgery in Riverside, CA. Mark is also listed as specializing in surgery and trauma surgery. Medicare claims data shows Mark provided 1,243 services to 969 patients. 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, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and ultrasonic guidance for blood vessel access. The provider's National Provider Identifier (NPI) is 1932329265.
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
- (440) 781-0931
- Email not available
Practice Locations
10800 MAGNOLIA AVENUE, KAISER PERMANENTE RIVERSIDE MEDICAL CENTER
Riverside, CA 92505
Conditions Commonly Evaluated or Treated
Within Vascular 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
Aneurysms
Aortic disease
Artery conditions
Artery disease
- Cold Sensitive Fingers and Toes
- Fibromuscular Dysplasia
- Mesenteric ischemia
- Narrow kidney artery
- Subclavian Steal Syndrome
Artery inflammation
Blood clots
Congenital vascular disorders
Dialysis
Digestive & abdominal
Emergencies
Foot & toe conditions
Leg & foot pain
Nerve & vessel compression
Skin & vein conditions
Vascular malformations
Vascular tumors
Vein conditions
Vein disease
Wounds & sores
Wounds & ulcers
Procedures & services
Most searched procedures
- Bypass surgery
- Carotid endarterectomy
- Sclerotherapy
- Spider vein removal
- Varicose vein treatment
- Vein ablation
Amputation surgery
Aneurysm repair
- Complex Branched Aortic Aneurysm Repair
- Minimally Invasive Aneurysm Repair
- Open Aortic Aneurysm Surgery
- Popliteal Aneurysm Repair
- Pseudoaneurysm Injection Repair
- Thoracic Endovascular Aortic Repair
- Visceral Aneurysm Coiling
Artery procedures
- Atherectomy
- Balloon Angioplasty for Legs
- Carotid Artery Stent
- Leg Artery Stent
- Limb Salvage Surgery
- Mesenteric Artery Stenting
- Renal artery stenting
- Transcarotid Artery Revascularization
Artery surgery
Blood clot treatments
Blood clots
- Blood Clot Removal Surgery
- Catheter Clot Dissolving Treatment
- IVC Filter Placement
- IVC Filter Removal
Diagnostic procedures
Diagnostic tests
Dialysis access
Emergency surgery
Imaging & diagnostics
- Carotid Ultrasound
- Leg Circulation Test (ABI and Arterial Doppler)
- Leg Vein Ultrasound
- Peripheral Angiogram
Nerve & vessel compression
Nerve surgery
Vascular access
- Chemo port placement
- Chemo port removal
- Dialysis Catheter Removal
- Tunneled Dialysis Catheter Placement
Vascular malformation treatments
Vein procedures
Vein treatments
Wound care
Procedures Most Often Billed to Medicare
1,243 services · 969 patients · 21 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Balloon dilation of artery of leg, initial vessel | Procedure | 37228 |
29 | More than most peers in Vascular Surgery |
| Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist | Procedure | 36902 |
28 | As often as other peers in Vascular Surgery |
| Insertion of stent and blood clot protection device in neck artery with review by radiologist | Procedure | 37215 |
25 | More often than most peers in Vascular Surgery |
| Relocation of arm vein with connection to arm artery for hemodialysis | Procedure | 36821 |
21 | More often than most peers in Vascular Surgery |
| Revision of hemodialysis graft | Procedure | 36832 |
14 | As often as other peers in Vascular Surgery |
| Insertion of stent in arteries of leg | Procedure | 37226 |
13 | Less often than most peers in Vascular Surgery |
| Removal of blood clot and portion of chest, neck, or brain artery | Procedure | 35301 |
13 | Less often than most peers in Vascular Surgery |
| Insertion of abdominal cavity tube using an endoscope | Procedure | 49324 |
11 | Less often than most peers in Vascular Surgery |
| Insertion of stent in groin artery, initial vessel | Procedure | 37221 |
11 | Less often than most peers in Vascular Surgery |
| Ultrasonic guidance for blood vessel access | Imaging | 76937 |
85 | More often than most peers in Vascular 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.
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.
Other vascular surgeons in Riverside 8
Same specialty, same city.
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 2001 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Balloon dilation of artery of leg, initial vessel 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Janzen's specialty?
Dr. Janzen is a vascular surgeon in Riverside, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Vascular Surgery”.
NPI registry
Where can I find Dr. Janzen?
Dr. Janzen is listed at 10800 Magnolia Avenue, Kaiser Permanente Riverside Medical Center, Riverside, CA 92505. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Janzen?
The number on file is (440) 781-0931. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Janzen?
Dr. Janzen's National Provider Identifier is 1932329265. 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
What is Dr. Janzen's medical education?
Dr. Janzen attended Other, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Janzen have?
Dr. Janzen has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Janzen known for?
According to Medicare billing data, Dr. Janzen performs procedures including balloon dilation of artery of leg, initial vessel, insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist and insertion of stent and blood clot protection device in neck artery with review by radiologist; reads or performs imaging such as ultrasonic guidance for blood vessel access and review by radiologist of arm or leg artery image; provides treatments such as use of a drug to induce depression of consciousness by physician performing a procedure , initial 15 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Janzen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Janzen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.