Quick answers
- Does Carlo G. Castillo accept Medicare assignment?
- Yes. Medicare's clinician data says Carlo G. Castillo 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 Carlo G. Castillo see?
- In 2024, CMS data shows 481 Original Medicare patients and 1,632 services for Carlo G. Castillo. This counts Original Medicare only and measures volume, not quality.
- What is Carlo G. Castillo's NPI number?
- 1518176031. 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 Carlo G. Castillo, 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 | 481 |
|---|---|
| Services billed to Medicare | 1,632 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)466 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)296 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)183 services
- Hemodialysis procedure with physician evaluation (90935)160 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)120 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).
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease75%
- Diabetes60%
- Ischemic heart disease58%
- Arthritis53%
Hospitals where Carlo G. Castillo works
Medicare's Facility Affiliation Data lists Carlo G. Castillo at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Athens Limestone HospitalAthens, AL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 010079
- Decatur Morgan Hospital - Decatur CampusDecatur, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010085
- Highlands Medical CenterScottsboro, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010061
- Huntsville HospitalHuntsville, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010039
- Lincoln Medical CenterFayetteville, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440102
Practice locations
Addresses where Carlo G. Castillo is enrolled with Medicare (CMS data updated October 2, 2026).
- 2780 Bob Wallace AveHunstville, AL 35805 (256) 533‑4626
Group practices
Medicare enrollment lists Carlo G. Castillo as a member of this group (CMS data updated October 2, 2026).
- Nephrology Consultants LLC17 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Alabama
Clinicians with the same Medicare primary specialty in Alabama — not a recommendation.
Other clinicians in Nephrology Consultants LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Physicians And Surgeons |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518176031 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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