ALEXANDER NIEVA DEL CASTILLO MD
NPI 1881705168
Internal Medicine in Salt Lake City, UT
About Alexander Nieva Del Castillo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER NIEVA DEL CASTILLO MD (NPI 1881705168) is an individual internal medicine provider in Salt Lake City, Utah, licensed in Utah (3746741205) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Intermountain Medical Center, and is a graduate of Other (1992).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Alexander Nieva Del Castillo Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Alexander Del Castillo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Murray, UT 84117
- Reassigned Medicare billing, Utah enrollment
- 271 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Intermountain Medical Center
Acute Care Hospitals · Murray, UTLakeview Hospital
Acute Care Hospitals · Bountiful, UTIntermountain Health Alta View Hospital
Acute Care Hospitals · Sandy, UTSt Mark's Hospital
Acute Care Hospitals · Salt Lake City, UTHoly Cross Hospital-Jordan Valley
Acute Care Hospitals · West Jordan, UTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 84124 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SALT LAKE CITY, UT 84124
SALT LAKE CITY, UT 84124
SALT LAKE CITY, UT 84124
SALT LAKE CITY, UT 84124
SALT LAKE CITY, UT 84124
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Alexander Del Castillo's NPI number?
The NPI number for Alexander Del Castillo is 1881705168. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is Alexander Del Castillo located?
Alexander Del Castillo practices at 1160 E 3900 S G200, Salt Lake City, UT 84124. The listed phone number is (801) 268-7766.
What is Alexander Del Castillo's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Alexander Del Castillo enrolled in Medicare?
Yes. Alexander Del Castillo is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Alexander Del Castillo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Del Castillo reassigns Medicare benefits to Utah Regional Hospitalists LLC (Murray, UT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alexander Del Castillo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexander Del Castillo accept?
Health plans from Imperial Health Plan of the Southwest, Inc. list Alexander Del Castillo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Alexander Del Castillo affiliated with any hospitals?
According to CMS data, Alexander Del Castillo is affiliated with Intermountain Medical Center, Lakeview Hospital, Intermountain Health Alta View Hospital, St Mark's Hospital and Holy Cross Hospital-Jordan Valley.
When was this NPI record last updated?
The NPPES record for Alexander Del Castillo was last updated on December 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Alexander Nieva Del Castillo, MD · NPI 1881705168
Internal Medicine physician in Salt Lake City, Utah. Individual provider, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1881705168 (Entity type: Individual)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 3746741205 (Utah)
- **Sole proprietor:** No
## Practice location
- **Address:** 1160 E 3900 S, G200, Salt Lake City, UT 84124-1202
- **Phone:** (801) 268-7766 · **Fax:** (801) 270-3381
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Utah Regional Hospitalists LLC (NPI 1962821223, Murray, UT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1992
## Record status
- **NPPES last updated:** December 5, 2012
- **Other identifiers:** Medicare ID-Type Unspecified 005745027 (UT); Medicare UPIN H03011
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Source: [NPI Profile](https://npiprofile.com/npi/1881705168) · Data from the CMS NPPES public registry.