1. Home
  2. Directory
  3. Tennessee
  4. Nashville
  5. Internal Medicine
  6. NPI Profile

RALPH C. ATKINSON III M.D.
NPI 1083606248
Internal Medicine - Nephrology in Nashville, TN

Active since August 15, 2005PECOS EnrolledAccepts Medicare Assignment
408 42ND AVE N STE 300, NASHVILLE, TN 37209(615) 356-4111(615) 356-8011 Get Directions Write a Review

NPPES record last updated: February 5, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Ralph C. Atkinson Iii M.d. NPPES

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

RALPH C. ATKINSON III M.D. (NPI 1083606248) is an individual nephrology provider in Nashville, Tennessee, licensed in Tennessee (21608) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Tristar Horizon Medical Center, and is a graduate of University Of Mississippi School Of Medicine (1985).

NPPES Registry Identity

NPI1083606248
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameRALPH C. ATKINSON IIICredential: M.D.
Location Address408 42ND AVE N STE 300Nashville, TN 37209-3669
Mailing Address408 42nd Ave N Ste 300Nashville, TN 37209-3669 · (615) 356-4111 · Fax (615) 356-8011
Phone(615) 356-4111
Fax(615) 356-8011
Sole ProprietorNo
Medical School CMSUniversity Of Mississippi School Of MedicineGraduated 1985
Enumeration DateAugust 15, 2005
Last NPPES UpdateFebruary 5, 2026
NPPES CertifiedFebruary 5, 2026
✔ NPI 1083606248 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in TN · 21608
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
408 42ND AVE N STE 300, Nashville, TN 37209
Open in Google Maps ↗

Other Identifiers 1

Medicaid3061200TN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter from Arkansas Health & Wellness, Ambetter Health 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

Ralph C. Atkinson Iii 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 ID244310035
PECOS Enrollment IDI20100629000559
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

2

Medicare enrollment records show Ralph Atkinson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Nephrology Associates, PC
Same address
Nephrology
408 42ND AVE N, STE 300
Nashville, TN 37209
  • Reassigned Medicare billing, Tennessee enrollment
  • 42 clinicians in this Medicare group
NPI 1700878360 (615) 356-4111
Saint Thomas Medical Partners
1.9 mi
Internal Medicine
2011 MURPHY AVE, SUITE 301
Nashville, TN 37203
  • Reassigned Medicare billing, Tennessee enrollment
  • 1,304 clinicians in this Medicare group
NPI 1437194669 (615) 327-9543

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 9

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
678 services324 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.
410 services175 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.
344 services176 patients
Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
165 services26 patients
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.
112 services108 patients
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454
This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.
98 services20 patients

Hospital Affiliations CMS Care Compare 5

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

Tristar Horizon Medical Center

Acute Care Hospitals · Dickson, TN
4/5 CMS rating
OwnershipProprietary
CMS Certification Number440046
Location111 Highway 70 EastDickson, TN 37055 · Dickson County
Emergency services Birthing friendly

Saint Thomas Rutherford Hospital

Acute Care Hospitals · Murfreesboro, TN
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number440053
Location1700 Medical Center ParkwayMurfreesboro, TN 37129 · Rutherford County
Emergency services Birthing friendly

Ascension Saint Thomas Hospital

Acute Care Hospitals · Nashville, TN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number440082
Location4220 Harding Rd, PO Box 380Nashville, TN 37205 · Davidson County
Emergency services Birthing friendly

Tristar Stonecrest Medical Center

Acute Care Hospitals · Smyrna, TN
3/5 CMS rating
OwnershipProprietary
CMS Certification Number440227
Location200 Stonecrest BoulevardSmyrna, TN 37167 · Rutherford County
Emergency services Birthing friendly

Ascension Saint Thomas Three Rivers

Critical Access Hospitals · Waverly, TN
OwnershipVoluntary non-profit - Private
CMS Certification Number441303
Location451 Highway 13 SouthWaverly, TN 37185 · Humphreys County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37209 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
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
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 8

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Cyclosporine, oral, 100 mg J7502
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier12 claims720 services$1.70 avg. paid by Medicare
Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
11 suppliers131 claims13,244 services$0.31 avg. paid by Medicare
Prednisone, immediate release or delayed release, oral, 1 mg J7512
Treatment-Treatment - Miscellaneous · category RX029N
6 suppliers76 claims11,400 services$0.01 avg. paid by Medicare
Cyclosporine, oral, 25 mg J7515
Treatment-Treatment - Miscellaneous · category RX029N
4 suppliers24 claims3,480 services$0.53 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
4 suppliers47 claims6,480 services$0.19 avg. paid by Medicare
Mycophenolic acid, oral, 180 mg J7518
Treatment-Treatment - Miscellaneous · category RX029N
5 suppliers51 claims7,560 services$0.97 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 2

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

KEVIN L COX M.D.
Internal Medicine (Nephrology)
408 42ND AVE N STE 300
NASHVILLE, TN 37209
Davidson County (615) 356-4111
RANJAN CHANDA M.D.
Internal Medicine (Nephrology)
408 42ND AVE N STE 300
NASHVILLE, TN 37209
Davidson County (615) 356-4111

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 Ralph Atkinson's NPI number?

The NPI number for Ralph Atkinson is 1083606248. It was assigned to this individual provider in the NPPES registry on August 15, 2005.

Where is Ralph Atkinson located?

Ralph Atkinson practices at 408 42nd Ave N Ste 300, Nashville, TN 37209. The listed phone number is (615) 356-4111.

What is Ralph Atkinson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Ralph Atkinson enrolled in Medicare?

Yes. Ralph Atkinson 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 Ralph Atkinson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ralph Atkinson reassigns Medicare benefits to 2 organizations: Nephrology Associates, PC (Nashville, TN) and Saint Thomas Medical Partners (Nashville, TN). 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 Ralph Atkinson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ralph Atkinson accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter from Arkansas Health & Wellness, Ambetter of Alabama and Ambetter of North Carolina and 5 other insurers list Ralph Atkinson 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 Ralph Atkinson affiliated with any hospitals?

According to CMS data, Ralph Atkinson is affiliated with Tristar Horizon Medical Center, Saint Thomas Rutherford Hospital, Ascension Saint Thomas Hospital, Tristar Stonecrest Medical Center and Ascension Saint Thomas Three Rivers.

When was this NPI record last updated?

The NPPES record for Ralph Atkinson was last updated on February 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.