Ryan Holthaus, M.D.
NPI 1609822873 · Diagnostic Radiology Physician · Mason City, IA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Holthaus, M.D. is a Diagnostic Radiology Physician provider in Mason City, IA (NPI 1609822873).
Provider details
- NPI number
- 1609822873
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 36598 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
8 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,122 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 250 | $8 |
| X-Ray of Chest, 2 Views71046 | 169 | $10 |
| Ultrasound Study of Arm and Leg Arteries93922 | 120 | $11 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 83 | $20 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 80 | $30 |
| Ultrasound of Leg Arteries Or Artery Grafts93925 | 71 | $35 |
| Fluoroscopic Guidance for Insertion Or Removal of Central Vein Access Device |
Practice location
Mailing address
Additional practice locations (7)
- 403 1st St SeBelmond, IA 50421-1201Phone: (844) 474-4321Fax: (641) 444-5554
- 104 S Story StBoone, IA 50036-4737Phone: (844) 474-4321Fax: (515) 432-2895
- 1316 S Main StClarion, IA 50525-2019Phone: (444) 744-3218Fax: (515) 532-3119
- 401 S 17th StClear Lake, IA 50428-2304Phone: (844) 474-4321Fax: (515) 832-1400
- 2700 1st Ave SFort Dodge, IA 50501-4300Phone: (844) 474-4321Fax: (515) 576-8581
- 840 W US Highway 18Garner, IA 50438-1023Phone: (844) 474-4321Fax: (641) 925-1507
- 1924 Superior StWebster City, IA 50595-3146Phone: (844) 474-4321Fax: (515) 832-1114
Registry dates
- Enumerated
- 2006-05-26
- Last updated
- 2025-03-11
- Certified
- 2025-03-11
Frequently asked questions
- What is Ryan Holthaus's NPI number?
- Ryan Holthaus's National Provider Identifier (NPI) is 1609822873, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Holthaus's specialty?
- Ryan Holthaus is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Holthaus located?
- Ryan Holthaus's practice location on file with NPPES is 1010 4th St Sw, Mason City, IA 50401-2857.
- What is Ryan Holthaus's phone number?
- The practice phone number listed in the NPPES registry for Ryan Holthaus is (641) 424-0102.
- Does Ryan Holthaus accept Medicare?
- Ryan Holthaus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Holthaus's NPI active?
- Yes — Ryan Holthaus's NPI (1609822873) is active in the NPPES registry as of the last update on 2025-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.