DR. ROBERT CAING NERVES MD, FACP, FPCP
NPI 1881834109
Internal Medicine - Nephrology in Sinajana, GU
About Dr. Robert Caing Nerves Md, Facp, Fpcp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROBERT CAING NERVES MD, FACP, FPCP (NPI 1881834109) is an individual nephrology provider in Sinajana, Guam, licensed in Guam (M1612) and active in the NPI registry since February 2009. He is enrolled in Medicare PECOS, is affiliated with Guam Memorial Hospital Authority, and is a graduate of Other (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Robert Caing Nerves Md, Facp, Fpcp 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 Reassignments
2Medicare enrollment records show Robert Nerves reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oka Tamuning, GU 96913
- Reassigned Medicare billing, Guam enrollment
- 320 clinicians in this Medicare group
Sinajana, GU 96910
- Reassigned Medicare billing, Guam enrollment
- 23 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 8
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Guam Memorial Hospital Authority
Acute Care Hospitals · Tamuning, GUGuam Regional Medical City
Acute Care Hospitals · Dededo, GUPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 96910 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.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SINAJANA, GU 96910
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 Robert Nerves's NPI number?
The NPI number for Robert Nerves is 1881834109. It was assigned to this individual provider in the NPPES registry on February 26, 2009.
Where is Robert Nerves located?
Robert Nerves practices at 736 Route 4 Suite 103, Sinajana, GU 96910. The listed phone number is (671) 649-7232.
What is Robert Nerves's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Robert Nerves enrolled in Medicare?
Yes. Robert Nerves 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 organizations bill Medicare for Robert Nerves's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Nerves reassigns Medicare benefits to 2 organizations: Guam Memorial Hospital (Oka Tamuning, GU) and Pacific Med & Nephrology (Sinajana, GU). Each 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 Robert Nerves's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Robert Nerves affiliated with any hospitals?
According to CMS data, Robert Nerves is affiliated with Guam Memorial Hospital Authority and Guam Regional Medical City.
When was this NPI record last updated?
The NPPES record for Robert Nerves was last updated on July 28, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Robert Caing Nerves, MD, FACP, FPCP · NPI 1881834109
Nephrology physician in Sinajana, GU. Individual provider, active in the CMS NPPES registry since February 26, 2009.
## Identity
- **NPI:** 1881834109 (Entity type: Individual)
- **Enumerated:** February 26, 2009
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** M1612 (GU)
- **Sole proprietor:** No
## Practice location
- **Address:** 736 ROUTE 4, SUITE 103, Sinajana, GU 96910-3368
- **Phone:** (671) 649-7232 · **Fax:** (671) 649-7233
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Guam Memorial Hospital (NPI 1366519027, Oka Tamuning, GU); Pacific Med & Nephrology (NPI 1033391313, Sinajana, GU) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1987
## Record status
- **NPPES last updated:** July 28, 2016
- **Other identifiers:** Medicare UPIN BZ302Z (GU)
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Source: [NPI Profile](https://npiprofile.com/npi/1881834109) · Data from the CMS NPPES public registry.