ROBERT RICARDO WALKER M.D.
NPI 1659320943
Internal Medicine in Greenville, SC

Q: What is Robert Walker's NPI number?

The NPI number for Robert Walker is 1659320943. It was assigned to this individual provider in the NPPES registry on May 6, 2006.

Q: What is Robert Walker's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Robert Walker was last updated on June 22, 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.

Active since May 06, 2006PECOS EnrolledAccepts Medicare Assignment

1007 GROVE RD, SUITE D, GREENVILLE, SC 29605(864) 558-0405(864) 558-0407 Get Directions Write a Review

NPPES record last updated: June 22, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Robert Ricardo Walker M.d. NPPES

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

ROBERT RICARDO WALKER M.D. (NPI 1659320943) is an individual internal medicine provider in Greenville, South Carolina, licensed in South Carolina (19534) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Au Medical Center, and is a graduate of University Of South Carolina School Of Medicine (1996).

NPPES Registry Identity

NPI1659320943

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameROBERT RICARDO WALKERCredential: M.D.

Location Address1007 GROVE RD, SUITE DGreenville, SC 29605-4630

Mailing Address1007 Grove Rd, Suite DGreenville, SC 29605-4630 · (864) 558-0405 · Fax (864) 558-0407

Phone(864) 558-0405

Fax(864) 558-0407

Sole ProprietorNo

Medical School CMSUniversity Of South Carolina School Of MedicineGraduated 1996

Enumeration DateMay 6, 2006

Last NPPES UpdateJune 22, 2016

✔ NPI 1659320943 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in SC · 19534

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1007 GROVE RD, Greenville, SC 29605

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Other Identifiers 8

Medicare PINSC2904D984SC

MedicaidGP6470SC

Medicare PINAA37527951SC

Medicare PING70141D577SC

Medicare PING701413640SC

Medicare UPING70141

Other110230171SC · Rr Medicare

Medicaid195345SC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina and more.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 Ricardo Walker 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.

PECOS PAC ID1355246612

PECOS Enrollment IDI20031201000571

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Robert Walker reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Prisma Health University Medical Group

0.4 mi

Diagnostic Radiology

1210 W FARIS RD
Greenville, SC 29605

Reassigned Medicare billing, South Carolina enrollment
Also billed through NPI 1568799955 (South Carolina)
3,281 clinicians in this Medicare group

NPI 1730850322 (864) 522-1800

Greenville Health System

5.8 mi

General Acute Care Hospital

175 PATEWOOD DR
Greenville, SC 29615

Reassigned Medicare billing, South Carolina enrollment
735 clinicians in this Medicare group

NPI 1568532513 (864) 797-1000

Sound Physicians Of South Carolina, LLC

93 mi

Hospitalist

302 UNIVERSITY PKWY
Aiken, SC 29801

Reassigned Medicare billing, South Carolina enrollment
117 clinicians in this Medicare group

NPI 1922428358 (803) 641-5000

Cogent Healthcare Of Georgia PC

153 mi

Internal Medicine

400 CHARTER BLVD
Macon, GA 31210

Reassigned Medicare billing, South Carolina enrollment
268 clinicians in this Medicare group

NPI 1609827823 (478) 757-8200

Mcleod Loris Seacoast Hospital

208 mi

Nurse Anesthetist, Certified Registered

3655 MITCHELL ST
Loris, SC 29569

Reassigned Medicare billing, South Carolina enrollment
240 clinicians in this Medicare group

NPI 1265708119 (843) 716-7000

Apogee Medical Group South Carolina

1,685 mi

Internal Medicine

15059 N SCOTTSDALE ROAD, SUITE 600
Scottsdale, AZ 85254

Reassigned Medicare billing, South Carolina enrollment
209 clinicians in this Medicare group

NPI 1619028545 (972) 269-1907

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 7

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

441 services405 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

218 services132 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

151 services91 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

90 services87 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

88 services88 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

67 services58 patients

Hospital Affiliations CMS Care Compare 3

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

Au Medical Center

Acute Care Hospitals · Augusta, GA

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number110034

Location1120 15th StreetAugusta, GA 30912 · Richmond County

Emergency services Birthing friendly

Aiken Regional Medical Center

Acute Care Hospitals · Aiken, SC

2/5 CMS rating

OwnershipProprietary

CMS Certification Number420082

Location302 University ParkwayAiken, SC 29801 · Aiken County

Emergency services Birthing friendly

Mcleod Loris Hospital

Acute Care Hospitals · Loris, SC

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420105

Location3655 Mitchell StreetLoris, SC 29569 · Horry County

Physician 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.

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

$95.12 typical visit price

range $16.96 – $133.52

Typical copayment $23.78 (range $4.24 – $33.38)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier16 claims24 services$16.16 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier16 claims24 services$87.04 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

OTIS BOYD GARDO JR

Durable Medical Equipment & Medical Supplies (Customized Equipment)

1007 GROVE RD, SUITE E
GREENVILLE, SC 29605

Greenville County (864) 232-3008

MADISON CLARK

Occupational Therapist