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ROBERT MICHAEL MARRERO JR. CRNA
NPI 1912546383
Nurse Anesthetist, Certified Registered in Conway, SC

Active since January 02, 2020Accepts Medicare Assignment
84.44/100
CMS Quality Rating
300 SINGLETON RIDGE RD, CONWAY, SC 29526(843) 347-8103 Get Directions Write a Review

NPPES record last updated: January 2, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Robert Michael Marrero Jr. Crna NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROBERT MICHAEL MARRERO JR. CRNA (NPI 1912546383) is an individual nurse anesthetist, certified registered in Conway, South Carolina, licensed in South Carolina (23569) and active in the NPI registry since January 2020. He is affiliated with Columbus Regional Healthcare System and is a graduate of Other (2019).

NPPES Registry Identity

NPI1912546383
Entity TypeIndividualMale
Primary Taxonomy367500000X
Provider Legal NameROBERT MICHAEL MARRERO JR.Credential: CRNA
Location Address300 SINGLETON RIDGE RDConway, SC 29526-9142
Mailing AddressPo Box 2295Asheville, NC 28802-2295 · (828) 398-5244
Phone(843) 347-8103
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJanuary 2, 2020
✔ NPI 1912546383 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in SC · 23569
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
300 SINGLETON RIDGE RD, Conway, SC 29526
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Plan of North Carolina, Inc.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

Robert Michael Marrero Jr. Crna 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.

PECOS PAC ID9032545074
PECOS Enrollment IDI20230810001747

Medicare Billing Reassignments

4

Medicare enrollment records show Robert Marrero reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Coastal Carolina Centers Of Urology And Surgery LLC
1.2 mi
Anesthesiology
822 FARRAR DR
Conway, SC 29526
  • Reassigned Medicare billing, South Carolina enrollment
  • 35 clinicians in this Medicare group
NPI 1205095080 (843) 347-9587
Atlantic Coast Anesthesia Services P.C.
11 mi
Anesthesiology
809 82ND PKWY
Myrtle Beach, SC 29572
  • Reassigned Medicare billing, South Carolina enrollment
  • Medicare enrollment name: Atlantic Coast Anesthesia Services PC
  • 258 clinicians in this Medicare group
NPI 1932641313 (843) 692-1000
Columbus Regional Healthcare System
42 mi
General Acute Care Hospital
500 JEFFERSON ST
Whiteville, NC 28472
  • Reassigned Medicare billing, North Carolina enrollment
  • 187 clinicians in this Medicare group
NPI 1376537555 (910) 642-8011
Medstream Anesthesia PLLC
1,024 mi
Anesthesiology
2221 LAKESIDE BLVD STE 600
Richardson, TX 75082
  • Reassigned Medicare billing, South Carolina enrollment
  • 553 clinicians in this Medicare group
NPI 1649616160 (828) 210-9386

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Columbus Regional Healthcare System

Acute Care Hospitals · Whiteville, NC
1/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number340068
Location500 Jefferson StWhiteville, NC 28472 · Columbus County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29526 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$124.04 typical visit price
range $53.57 – $163.84
Typical copayment $31.01 (range $13.39 – $40.96)
Most-billed visit code 99204
Established Patient
$67.12 typical visit price
range $16.96 – $133.52
Typical copayment $16.78 (range $4.24 – $33.38)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

84.44/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality88.33
Improvement Activities40
Cost69.53

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.

CLINIC SERVICES OF SOUTH CAROLINA PC
Hospitalist
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 347-7111
ISABELLA JIMENEZ
Registered Nurse
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 347-7111
KAYLEA HORACEK DO
Student in an Organized Health Care Education/Training Program
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 234-7405
DR. ALLEN E SMOLENSKI MD
Emergency Medicine
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 347-8015
TAWSIF NADIR DO
Family Medicine
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 347-8134
MR. SETH WINEGAR RN
Registered Nurse
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 234-8575
EILEEN BROWN CRNA
Nurse Anesthetist, Certified Registered
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 347-7111
MRS. PATTY JOHNSON REIS CRNA
Nurse Anesthetist, Certified Registered
300 SINGLETON RIDGE RD
CONWAY, SC 29526
Horry County (843) 347-7111

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 Marrero's NPI number?

The NPI number for Robert Marrero is 1912546383. It was assigned to this individual provider in the NPPES registry on January 2, 2020.

Where is Robert Marrero located?

Robert Marrero practices at 300 Singleton Ridge Rd, Conway, SC 29526. The listed phone number is (843) 347-8103.

What is Robert Marrero's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Robert Marrero enrolled in Medicare?

Yes. Robert Marrero 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 Marrero's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Marrero reassigns Medicare benefits to 4 organizations: Coastal Carolina Centers Of Urology And Surgery LLC (Conway, SC), Atlantic Coast Anesthesia Services P.C. (Myrtle Beach, SC), Columbus Regional Healthcare System (Whiteville, NC) and Medstream Anesthesia PLLC (Richardson, TX). 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 Marrero's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Robert Marrero accept?

Health plans from Oscar Health Plan of North Carolina, Inc list Robert Marrero 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 Robert Marrero affiliated with any hospitals?

According to CMS data, Robert Marrero is affiliated with Columbus Regional Healthcare System.

When was this NPI record last updated?

The NPPES record for Robert Marrero was last updated on January 2, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.