Physician Profile
Unclaimed ProfileAbout JANZEN
Mark A Janzen, M.D. is a healthcare provider in Tulsa, OK specializing in diagnostic radiology. Medicare claims data shows Mark provided 2,935 services to 2,745 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (918) 934-8347
- Email not available
Practice Locations
5801 E. 41ST STREET SUITE 900
Tulsa, OK 74135
Procedures Most Often Billed to Medicare
2,935 services · 2,745 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
983 |
| Screening mammography | Imaging | 77067 |
690 |
| Screening 3d breast mammography | Imaging | 77063 |
436 |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
170 |
| Ct scan head or brain without contrast | Imaging | 70450 |
73 |
| X-ray of abdomen, 1 view | Imaging | 74018 |
66 |
| Diagnostic mammography of 1 breast | Imaging | 77065 |
64 |
| Limited ultrasound scan of 1 breast | Imaging | 76642 |
60 |
| Diagnostic mammography of both breasts | Imaging | 77066 |
40 |
| X-ray of chest, 2 views | Imaging | 71046 |
38 |
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 diagnostic radiology specialists at this location 8
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.
Other diagnostic radiology specialists in Tulsa 4
Same specialty, same city.
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 1985 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in OK who bill this service to Medicare most often.
Common questions
What does Dr. Janzen specialize in?
Dr. Janzen is a diagnostic radiology in Tulsa, OK. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where is Dr. Janzen located?
Dr. Janzen is listed at 5801 E. 41ST STREET SUITE 900, Tulsa, OK 74135. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Janzen's phone number?
The number on file is (918) 934-8347. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Janzen?
Dr. Janzen's National Provider Identifier is 1699758961. 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. Janzen go to medical school?
Dr. Janzen attended Other, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Janzen have?
Dr. Janzen has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Janzen do most often?
According to Medicare billing data, Dr. Janzen performs imaging including x-ray of chest, 1 view and screening mammography. 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.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.