Physician Profile
Unclaimed ProfileAbout HOLTHAUS
Based in Mason City, IA, Ryan Michael Holthaus, M.D. is listed in the NPI registry under diagnostic radiology. Ryan graduated from University of Iowa, Rj & L Carver College of Medicine in 2001.
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
Common questions
What does Dr. Holthaus specialise in?
Dr. Holthaus is a diagnostic radiology in Mason City, IA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where is Dr. Holthaus located?
Dr. Holthaus is listed at 1010 4TH ST SW SUITE 100, Mason City, IA 50401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Holthaus's phone number?
The number on file is (641) 424-0102. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Holthaus?
Dr. Holthaus's National Provider Identifier is 1609822873. 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. Holthaus go to medical school?
Dr. Holthaus attended University of Iowa, Rj & L Carver College of Medicine, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Holthaus have?
Dr. Holthaus has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Holthaus do most often?
According to Medicare billing data, Dr. Holthaus performs procedures including drainage of fluid from abdominal cavity using imaging guidance, aspiration of fluid from chest cavity using imaging guidance and core needle biopsy of lung or center cavity of chest , accessed through skin; reads or performs imaging such as x-ray of chest, 1 view and x-ray of chest, 2 views; provides treatments such as ultrasound study of arm and leg arteries and ultrasound study of one arm or leg veins with compression and maneuvers. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Holthaus's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Holthaus. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (641) 424-0102
- Email not available
Practice Locations
1010 4TH ST SW SUITE 100
Mason City, IA 50401
Procedures Most Often Billed to Medicare
1,553 services · 1,424 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Drainage of fluid from abdominal cavity using imaging guidance | Procedure | 49083 |
50 |
| Aspiration of fluid from chest cavity using imaging guidance | Procedure | 32555 |
45 |
| Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin | Procedure | 32408 |
32 |
| X-ray of chest, 1 view | Imaging | 71045 |
250 |
| X-ray of chest, 2 views | Imaging | 71046 |
169 |
| Fluoroscopic guidance for insertion or removal of central vein access device | Imaging | 77001 |
66 |
| Ultrasonic guidance for blood vessel access | Imaging | 76937 |
60 |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
58 |
| Complete ultrasound scan behind abdominal cavity | Imaging | 76770 |
38 |
| Ct scan of chest without contrast | Imaging | 71250 |
36 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated 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 4
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 Mason City 4
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of Iowa, Rj & L Carver College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2001 at University of Iowa, Rj & L Carver College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Drainage of fluid from abdominal cavity using imaging guidance 7
Providers in IA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.