DR. CARLOS F ZAYAS MD
NPI 1205979564
Internal Medicine - Nephrology in Greenville, SC
About Dr. Carlos F Zayas Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CARLOS F ZAYAS MD (NPI 1205979564) is an individual nephrology provider in Greenville, South Carolina, licensed in South Carolina (36699) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Prisma Health Oconee Memorial Hospital, and maintains a secondary practice location in Charleston.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Location 1
Other Identifiers 1
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. Carlos F Zayas 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 Reassignments
4Medicare enrollment records show Carlos Zayas reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greenville, SC 29605
- Reassigned Medicare billing, South Carolina enrollment
- 3,281 clinicians in this Medicare group
Columbia, SC 29212
- Reassigned Medicare billing, South Carolina enrollment
- 1,466 clinicians in this Medicare group
Augusta, GA 30912
- Reassigned Medicare billing, Georgia and South Carolina enrollments
- 1,151 clinicians in this Medicare group
Charleston, SC 29414
- Reassigned Medicare billing, South Carolina enrollment
- Medicare enrollment name: University Medical Associates Of The Medical University Of South Carol
- 2,594 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 5
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.
Prisma Health Oconee Memorial Hospital
Acute Care Hospitals · Seneca, SCPrisma Health Richland Hospital
Acute Care Hospitals · Columbia, SCPrisma Health Greer Memorial Hospital
Acute Care Hospitals · Spartanburg, SCPrisma Health Hillcrest Hospital
Acute Care Hospitals · Simpsonville, SCPrisma Health Greenville Memorial Hospital
Acute Care Hospitals · Greenville, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29605 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 8
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Carlos Zayas's NPI number?
The NPI number for Carlos Zayas is 1205979564. It was assigned to this individual provider in the NPPES registry on February 15, 2007. The provider is also known as Dr. Carlos F Zayas-Montalvo MD.
Where is Carlos Zayas located?
Carlos Zayas practices at 203 Mills Ave # 9159, Greenville, SC 29605. The listed phone number is (864) 271-1844.
What is Carlos Zayas's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Carlos Zayas enrolled in Medicare?
Yes. Carlos Zayas 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 Carlos Zayas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carlos Zayas reassigns Medicare benefits to 4 organizations: Prisma Health University Medical Group (Greenville, SC), Prisma Health Medical Group-Midlands (Columbia, SC), Au Medical Associates Inc (Augusta, GA) and University Medical Associates (Charleston, SC). 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 Carlos Zayas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Carlos Zayas accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and First Choice Next and 1 other insurer list Carlos Zayas 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 Carlos Zayas affiliated with any hospitals?
According to CMS data, Carlos Zayas is affiliated with Prisma Health Oconee Memorial Hospital, Prisma Health Richland Hospital, Prisma Health Greer Memorial Hospital, Prisma Health Hillcrest Hospital and Prisma Health Greenville Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Carlos Zayas was last updated on May 22, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Carlos F Zayas, MD · NPI 1205979564
Nephrology physician in Greenville, South Carolina. Individual provider, active in the CMS NPPES registry since February 15, 2007.
## Identity
- **NPI:** 1205979564 (Entity type: Individual)
- **Enumerated:** February 15, 2007
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 36699 (South Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 203 MILLS AVE # 9159, Greenville, SC 29605-4019
- **Phone:** (864) 271-1844 · **Fax:** (864) 271-2147
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Prisma Health University Medical Group (NPI 1053786483, Greenville, SC); Prisma Health Medical Group-Midlands (NPI 1003307166, Columbia, SC); Au Medical Associates Inc (NPI 1841230620, Augusta, GA); University Medical Associates (NPI 1760413835, Charleston, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Puerto Rico School Of Medicine, class of 1990
## Record status
- **NPPES last updated:** May 22, 2023
- **Other identifiers:** Medicaid PENDING (SC)
---
Source: [NPI Profile](https://npiprofile.com/npi/1205979564) · Data from the CMS NPPES public registry.