Quick answers
- Does Nicolas S. Calzada accept Medicare assignment?
- Yes. Medicare's clinician data says Nicolas S. Calzada accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Nicolas S. Calzada see?
- In 2024, CMS data shows 18 Original Medicare patients and 64 services for Nicolas S. Calzada. This counts Original Medicare only and measures volume, not quality.
- What is Nicolas S. Calzada's NPI number?
- 1467772731. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Nicolas S. Calzada, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 18 |
|---|---|
| Services billed to Medicare | 64 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 50 |
Most frequent services
- Psychotherapy, 30 minutes (90832)23 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- Anxiety75%
- Depression72%
Practice locations
Addresses where Nicolas S. Calzada is enrolled with Medicare (CMS data updated October 2, 2026).
- 110 W Southridge RdMarshalltown, IA 50158 (641) 351‑7906
- 3809 S Ctr StMarshalltown, IA 50158 (641) 752‑1585
Group practices
Medicare enrollment lists Nicolas S. Calzada as a member of these groups (CMS data updated October 2, 2026).
- Center Associates10 clinicians in the group
- Iowa River Wellness PC5 clinicians in the group
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Marshalltown
Clinicians with the same Medicare primary specialty in Marshalltown, IA — not a recommendation.
Other clinicians in Center Associates
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2007 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1467772731 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians