DR. WILLIAM FREDRICK WALLACE M.D.
NPI 1700920154
Internal Medicine - Interventional Cardiology in Savannah, GA

Q: What is William Wallace's NPI number?

The NPI number for William Wallace is 1700920154. It was assigned to this individual provider in the NPPES registry on February 19, 2007.

Q: What is William Wallace's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Q: When was this NPI record last updated?

The NPPES record for William Wallace was last updated on November 27, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 February 19, 2007PECOS EnrolledAccepts Medicare Assignment

79.12/100

CMS Quality Rating

11700 MERCY BLVD, BUILDING 6, SAVANNAH, GA 31419(912) 927-3434 Get Directions Write a Review

NPPES record last updated: November 27, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. William Fredrick Wallace M.d. NPPES

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

DR. WILLIAM FREDRICK WALLACE M.D. (NPI 1700920154) is an individual interventional cardiology provider in Savannah, Georgia, licensed in Georgia (060513) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Candler Hospital, and is a graduate of University Of Mississippi School Of Medicine (2001).

NPPES Registry Identity

NPI1700920154

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameDR. WILLIAM FREDRICK WALLACECredential: M.D.

Location Address11700 MERCY BLVD, BUILDING 6Savannah, GA 31419-1753

Mailing Address11700 Mercy Blvd, Blvd 6Savannah, GA 31419-1753 · (912) 927-3434

Phone(912) 927-3434

Sole ProprietorNo

Medical School CMSUniversity Of Mississippi School Of MedicineGraduated 2001

Enumeration DateFebruary 19, 2007

Last NPPES UpdateNovember 27, 2012

✔ NPI 1700920154 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Interventional CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RI0011X

License✔ Licensed in GA · 060513

Definition

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

11700 MERCY BLVD, Savannah, GA 31419

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Other Identifiers 3

Other1700920154GA · Medicare Railroad

Medicaid581114452AGA

Medicare PIN511I060190GA

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. William Fredrick Wallace 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 ID749350627

PECOS Enrollment IDI20080604000178

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

St. Joseph's Cardiology Group, LLC

Same address

Interventional Cardiology

11700 MERCY BLVD., PLAZA D #6
Savannah, GA 31419

Reassigned Medicare billing, Georgia enrollment
17 clinicians in this Medicare group

NPI 1619216058 (912) 927-3434

Landmark Hospital Of Savannah LLC

4.4 mi

Long Term Care Hospital

800 E 68TH ST
Savannah, GA 31405

Reassigned Medicare billing, Georgia enrollment
9 clinicians in this Medicare group

NPI 1023436102 (912) 298-1000

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 35

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.

1,504 services651 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.

583 services484 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

332 services219 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.

273 services265 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

206 services173 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.

189 services189 patients

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

185 services179 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.

150 services73 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.

132 services132 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.

124 services124 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

104 services101 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

90 services62 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.

77 services77 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

54 services37 patients

Ultrasound of heart with probe in esophagus during surgery on heart or great blood vessels with report 93355

This procedure, known as a transesophageal echocardiogram, involves placing a probe in your esophagus to capture detailed images of your heart during surgery. It helps surgeons monitor heart function and guide treatment. A report will follow.

48 services47 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

43 services42 patients

Heart rhythm recording continous external ekg over more than 48 hours up to 7 days 93242

This procedure involves wearing a device, an external EKG, for up to 7 days to continuously monitor your heart rhythm. It helps detect irregularities that may not occur during a standard EKG. The device is non-invasive and safe.

42 services41 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

42 services42 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

39 services39 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

38 services36 patients

Repair of left upper heart chamber with implant with review by radiologist 33340

This is a procedure to fix a problem in your left upper heart chamber. An implant is used to correct the issue. After the procedure, a radiologist, a doctor who specializes in medical imaging, reviews the images to ensure everything is in order.

34 services34 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

32 services32 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.

32 services30 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

27 services27 patients

Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional 93272

An Electrocardiogram (ECG) is a test that records the electrical activity of your heart. For up to 30 days, a device will continuously monitor your heart's rhythm, noting any symptoms. The data is sent to a healthcare professional who reviews it and provides a report on your heart health.

26 services26 patients

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

25 services25 patients

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

24 services24 patients

Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring 93270

An Electrocardiogram (ECG) is a test that monitors your heart's electrical activity for up to 30 days. It helps identify irregular heartbeats or rhythms. You'll wear a small device that records your heart activity, especially when symptoms like chest pain or palpitations occur.

21 services21 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

20 services18 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 services17 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

16 services16 patients

Replacement of aortic valve through the skin and femoral artery 33361

This procedure, known as Transcatheter Aortic Valve Replacement (TAVR), involves replacing a damaged aortic valve through a small incision in the leg. A catheter is inserted into the femoral artery and guided up to the heart. The new valve is then positioned and deployed, restoring normal blood flow.

15 services15 patients

Electrocardiogram (ecg) 2-day continuous 93225

An Electrocardiogram (ECG) 2-day continuous is a non-invasive test that records the electrical activity of your heart over 48 hours. It helps to detect irregular heart rhythms, heart disease, or other cardiac conditions. You wear a portable device that records heart activity as you go about your daily activities.

15 services15 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

15 services13 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Candler Hospital

Acute Care Hospitals · Savannah, GA

1/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number110024

Location5353 Reynolds StreetSavannah, GA 31412 · Chatham County

Emergency services Birthing friendly

St Joseph's Hospital - Savannah

Acute Care Hospitals · Savannah, GA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110043

Location11705 Mercy BoulevardSavannah, GA 31419 · Chatham County

Emergency services

Wayne Memorial Hospital

Acute Care Hospitals · Jesup, GA

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110124

Location865 South First StreetJesup, GA 31545 · Wayne County

Emergency services Birthing friendly

Evans Memorial Hospital

Acute Care Hospitals · Claxton, GA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110142

Location200 N River StreetClaxton, GA 30417 · Evans County

Emergency services

Candler County Hospital

Critical Access Hospitals · Metter, GA

OwnershipProprietary

CMS Certification Number111334

Location400 Cedar StreetMetter, GA 30439 · Candler County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 31419 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

$124.10 typical visit price

range $53.31 – $164.04

Typical copayment $31.02 (range $13.32 – $41.01)

Most-billed visit code 99204

Established Patient

$94.84 typical visit price

range $16.68 – $133.24

Typical copayment $23.71 (range $4.17 – $33.31)

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.

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.

79.12/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

78.96

Improvement Activities

Cost

58.47

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.

SOUTHEAST LUNG & CRITICAL CARE SPECIALISTS, PC

Internal Medicine (Pulmonary Disease)

11700 MERCY BLVD, BLDG #5
SAVANNAH, GA 31419

Chatham County (912) 927-6270

MRS. BAILEY LAUREN HESS PA-C

Physician Assistant (Medical)

11700 MERCY BLVD, PLAZA D, BLDG 1, STE. A
SAVANNAH, GA 31419

Chatham County (912) 819-0500

TAYLOR D KAJFEZ AGACNP-BC

Nurse Practitioner (Acute Care)

11700 MERCY BLVD
SAVANNAH, GA 31419

Chatham County (912) 927-3434

MR. CLINT R. FENTON PA

Physician Assistant

11700 MERCY BLVD, PLAZA D #6
SAVANNAH, GA 31419

Chatham County (912) 927-3434

DR. JOHN DALE RATHBUN M.D.

Internal Medicine (Interventional Cardiology)

11700 MERCY BLVD, PLAZA D
SAVANNAH, GA 31419

Chatham County (912) 961-8647

DR. GARY ELKIN M.D.

Internal Medicine (Interventional Cardiology)

11700 MERCY BLVD, PLAZA D
SAVANNAH, GA 31419

Chatham County (912) 961-8647

CARDIOLOGY ASSOCIATES OF SAVANNAH

Internal Medicine (Cardiovascular Disease)

11700 MERCY BLVD, #6 PLAZA D
SAVANNAH, GA 31419

Chatham County (912) 961-8647

MRS. BEVERLY J LIPPERT AGACNP-BC

Nurse Practitioner (Acute Care)

11700 MERCY BLVD, PLAZA D #6
SAVANNAH, GA 31419

Chatham County (912) 927-3434

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 William Wallace's NPI number?

The NPI number for William Wallace is 1700920154. It was assigned to this individual provider in the NPPES registry on February 19, 2007.

Where is William Wallace located?

William Wallace practices at 11700 Mercy Blvd Building 6, Savannah, GA 31419. The listed phone number is (912) 927-3434.

What is William Wallace's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Is William Wallace enrolled in Medicare?

Yes. William Wallace 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 William Wallace's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Wallace reassigns Medicare benefits to 2 organizations: St. Joseph's Cardiology Group, LLC (Savannah, GA) and Landmark Hospital Of Savannah LLC (Savannah, GA). 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 William Wallace's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is William Wallace affiliated with any hospitals?

According to CMS data, William Wallace is affiliated with Candler Hospital, St Joseph's Hospital - Savannah, Wayne Memorial Hospital, Evans Memorial Hospital and Candler County Hospital.

When was this NPI record last updated?

The NPPES record for William Wallace was last updated on November 27, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.