DR. NELIO GUZMAN AGUAYO M.D.
NPI 1124266184
Internal Medicine - Nephrology in Spokane, WA
About Dr. Nelio Guzman Aguayo M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NELIO GUZMAN AGUAYO M.D. (NPI 1124266184) is an individual nephrology provider in Spokane, Washington, licensed in Washington (MD60321439) and active in the NPI registry since January 2009. He is enrolled in Medicare PECOS, is affiliated with Prov Sacred Hrt Med Ctr & Childs Hosp., and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses 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
Dr. Nelio Guzman Aguayo M.d. 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 Nelio Guzman Aguayo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Spokane, WA 99204
- Reassigned Medicare billing, Washington enrollment
- 862 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 6
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.
Prov Sacred Hrt Med Ctr & Childs Hosp.
Acute Care Hospitals · Spokane, WAProvidence Holy Family Hospital
Acute Care Hospitals · Spokane, WALincoln Hospital
Critical Access Hospitals · Davenport, WANewport Community Hospital
Critical Access Hospitals · Newport, WAProvidence Mount Carmel Hospital
Critical Access Hospitals · Colville, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 99204 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SPOKANE, WA 99204
SPOKANE, WA 99204
SPOKANE, WA 99204
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 Nelio Guzman Aguayo's NPI number?
The NPI number for Nelio Guzman Aguayo is 1124266184. It was assigned to this individual provider in the NPPES registry on January 29, 2009.
Where is Nelio Guzman Aguayo located?
Nelio Guzman Aguayo practices at 105 W 8th Ave Suite 7060, Spokane, WA 99204. The listed phone number is (509) 747-2054.
What is Nelio Guzman Aguayo's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Nelio Guzman Aguayo enrolled in Medicare?
Yes. Nelio Guzman Aguayo 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 Nelio Guzman Aguayo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nelio Guzman Aguayo reassigns Medicare benefits to Providence Health & Services Washington (Spokane, WA). 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 Nelio Guzman Aguayo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nelio Guzman Aguayo accept?
Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Nelio Guzman Aguayo 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 Nelio Guzman Aguayo affiliated with any hospitals?
According to CMS data, Nelio Guzman Aguayo is affiliated with Prov Sacred Hrt Med Ctr & Childs Hosp., Providence Holy Family Hospital, Lincoln Hospital, Newport Community Hospital and Providence Mount Carmel Hospital.
When was this NPI record last updated?
The NPPES record for Nelio Guzman Aguayo was last updated on May 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Nelio Guzman Aguayo, M.D. · NPI 1124266184
Nephrology physician in Spokane, Washington. Individual provider, active in the CMS NPPES registry since January 29, 2009.
## Identity
- **NPI:** 1124266184 (Entity type: Individual)
- **Enumerated:** January 29, 2009
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** MD60321439 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 105 W 8TH AVE, SUITE 7060, Spokane, WA 99204-2302
- **Phone:** (509) 747-2054 · **Fax:** (509) 747-2054
## 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:** Providence Health & Services Washington (NPI 1194099390, Spokane, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** May 25, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1124266184) · Data from the CMS NPPES public registry.