MARK FREEMAN AARON M.D.
NPI 1306891262
Internal Medicine - Advanced Heart Failure and Transplant Cardiology in Nashville, TN

Q: What is Mark Aaron's NPI number?

The NPI number for Mark Aaron is 1306891262. It was assigned to this individual provider in the NPPES registry on May 22, 2006.

Q: What is Mark Aaron's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Advanced Heart Failure and Transplant Cardiology, with taxonomy code 207RA0001X.

Q: When was this NPI record last updated?

The NPPES record for Mark Aaron was last updated on February 25, 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.

Active since May 22, 2006PECOS EnrolledAccepts Medicare Assignment

4230 HARDING RD, SUITE 330, NASHVILLE, TN 37205(615) 269-4545(615) 565-6789 Get Directions Write a Review

NPPES record last updated: February 25, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 25, 2020, Dec 1, 2017 (2 updates tracked since 2017).

On this page

About Mark Freeman Aaron M.d. NPPES

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

MARK FREEMAN AARON M.D. (NPI 1306891262) is an individual advanced heart failure and transplant cardiology provider in Nashville, Tennessee, licensed in Tennessee (34472) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Sumner Regional Medical Center, and is a graduate of Duke University School Of Medicine (1992).

NPPES Registry Identity

NPI1306891262

Entity TypeIndividualMale

Primary Taxonomy207RA0001X

Provider Legal NameMARK FREEMAN AARONCredential: M.D.

Location Address4230 HARDING RD, SUITE 330Nashville, TN 37205-2013

Mailing Address4230 Harding Pike, Ste 330Nashville, TN 37205-2018 · (615) 269-4545 · Fax (615) 565-6789

Phone(615) 269-4545

Fax(615) 565-6789

Sole ProprietorNo

Medical School CMSDuke University School Of MedicineGraduated 1992

Enumeration DateMay 22, 2006

Last NPPES UpdateFebruary 25, 20202 updates tracked since enumeration

✔ NPI 1306891262 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Advanced Heart Failure and Transplant CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RA0001X

License✔ Licensed in TN · 34472

Definition

Specialists in Advanced Heart Failure and Transplant Cardiology would participate in the inpatient and outpatient management of patients with advanced heart failure across the spectrum from consideration for high-risk cardiac surgery, cardiac transplantation, or mechanical circulatory support, to pre-and post-operative evaluation and management of patients with cardiac transplants and mechanical support devices, and end-of-life care for patients with end-stage heart failure.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 34472 (TN)

4230 HARDING RD, Nashville, TN 37205

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Other Identifiers 3

Other6011524TN · Bcbs

Medicaid3332534TN

OtherP00449685TN · Rr Medicare

Accepted Insurance

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

Mark Freeman Aaron 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 ID3577542273

PECOS Enrollment IDI20040716000107

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 Mark Aaron reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Saint Thomas Medical Partners

0.3 mi

Radiology, Mobile Mammography

102 WOODMONT BLVD, SUITE 800
Nashville, TN 37205

Reassigned Medicare billing, Tennessee enrollment
1,304 clinicians in this Medicare group

NPI 1881981033 (615) 284-6698

Murfree Physician Services PC

30 mi

Advanced Heart Failure and Transplant Cardiology

1700 MEDICAL CENTER PKWY
Murfreesboro, TN 37129

Reassigned Medicare billing, Tennessee enrollment
13 clinicians in this Medicare group

NPI 1881580074 (615) 396-4100

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 15

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.

388 services218 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

223 services157 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.

189 services78 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

175 services170 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

89 services85 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

51 services48 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

46 services46 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

44 services44 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.

41 services27 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

27 services27 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.

23 services23 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

22 services22 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

17 services17 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

17 services14 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

13 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Sumner Regional Medical Center

Acute Care Hospitals · Gallatin, TN

1/5 CMS rating

OwnershipProprietary

CMS Certification Number440003

Location555 Hartsville PikeGallatin, TN 37066 · Sumner County

Emergency services Birthing friendly

Williamson Medical Center

Acute Care Hospitals · Franklin, TN

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number440029

Location4321 Carothers ParkwayFranklin, TN 37067 · Williamson 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

Henry County Medical Center

Acute Care Hospitals · Paris, TN

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number440132

Location301 Tyson AvParis, TN 38242 · Henry County

Emergency services

Saint Thomas River Park Hospital

Acute Care Hospitals · Mcminnville, TN

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440151

Location1559 Sparta StreetMcminnville, TN 37110 · Warren County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37205 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 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 supplier11 claims12 services$17.64 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

4 suppliers31 claims32 services$83.31 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 20

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

RICHARD C TOMICHEK M.D.

Anesthesiology

4230 HARDING RD, SUITE 435
NASHVILLE, TN 37205

Davidson County (615) 385-3704

GARY R. MCDONALD M.D.

Internal Medicine

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

LAWRENCE W FREUND D.O.

Anesthesiology (Critical Care Medicine)

4230 HARDING RD, SUITE 435
NASHVILLE, TN 37205

Davidson County (615) 385-3704

TIMOTHY D DIBBLE MD

Internal Medicine

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

H. DOUGLAS HOLLIDAY MD PLLC

Internal Medicine

4230 HARDING RD, STE. 530 HEART INSTITUTE
NASHVILLE, TN 37205

Davidson County (615) 297-6006

ASA CLYDE HEFLIN M.D.

Internal Medicine (Pulmonary Disease)

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

MS. SUSAN ST ROMAIN ANDERSON CRNA

Nurse Anesthetist, Certified Registered

4230 HARDING RD, SUITE 435
NASHVILLE, TN 37205

Davidson County (615) 385-3704

NEWTON P. ALLEN JR. M.D.

Internal Medicine

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

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 Mark Aaron's NPI number?

The NPI number for Mark Aaron is 1306891262. It was assigned to this individual provider in the NPPES registry on May 22, 2006.

Where is Mark Aaron located?

Mark Aaron practices at 4230 Harding Rd Suite 330, Nashville, TN 37205. The listed phone number is (615) 269-4545.

What is Mark Aaron's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Advanced Heart Failure and Transplant Cardiology, with taxonomy code 207RA0001X.

Is Mark Aaron enrolled in Medicare?

Yes. Mark Aaron 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 Mark Aaron's services?

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

What insurance does Mark Aaron accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 4 other insurers list Mark Aaron 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 Mark Aaron affiliated with any hospitals?

According to CMS data, Mark Aaron is affiliated with Sumner Regional Medical Center, Williamson Medical Center, Ascension Saint Thomas Hospital, Henry County Medical Center and Saint Thomas River Park Hospital.

When was this NPI record last updated?

The NPPES record for Mark Aaron was last updated on February 25, 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.