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Edit this profileAt a glance
- 2845 Greenbrier Rd Ste 310, Green Bay, WI 54311
About Dr. Witmer
Based in Green Bay, WI, William T. Witmer, MD is listed in the NPI registry under cardiovascular disease (cardiology). William graduated from Vanderbilt University School of Medicine in 1988. William is also listed as specializing in interventional cardiology. Medicare claims data shows William provided 1,597 services to 1,440 patients. The services billed most often include ultrasound of heart with color-depicted blood flow, rate, direction and valve function, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, and ultrasound of heart, follow-up. NPI 1033130653 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (920) 288-8300
- Email not available
Practice Locations
2845 GREENBRIER RD STE 310
Green Bay, WI 54311
Conditions Commonly Evaluated or Treated
Within Cardiovascular Disease generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Coronary and ischemic heart disease
Heart failure and cardiomyopathy
Heart rhythm
Symptoms and functional disorders
Valve and structural heart
- Aortic stenosis
- Mitral regurgitation
- Mitral valve prolapse
- Patent foramen ovale
Vascular and risk factors
- Aortic aneurysm
- Carotid artery disease
- Familial hypercholesterolemia
- Resistant hypertension
Artery & vascular
- Peripheral Artery Disease (PAD)
Heart inflammation
- Pericarditis (Heart Sac Inflammation)
Heart muscle
Heart valves
Vascular disease
Procedures & services
Most searched procedures
- Echocardiogram
- EKG
- Heart monitor
- Heart stent
- Pacemaker surgery
- Stress test
Office and noninvasive testing
Advanced imaging
- Cardiac magnetic resonance imaging
- Nuclear cardiac stress imaging
Consultations
- Preventive Cardiology Consultation
Diagnostic testing
Diagnostics
- Electrophysiology Study (EP Study)
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
- Heart CT Scan (Cardiac CT)
Heart procedures
Heart rhythm procedures
Imaging
- Heart Calcium Scan
- Transesophageal Echocardiogram for Kids
Implants
- Defibrillator Implant (ICD)
Recovery & rehabilitation
- Cardiac Rehabilitation Program
Vascular imaging
Procedures Most Often Billed to Medicare
1,597 services · 1,440 patients · 14 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
53 | As often as other peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
478 | More often than most peers in Cardiovascular Disease… |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
464 | As often as other peers in Cardiovascular Disease… |
| Ultrasound of heart, follow-up | Treatment | 93308 |
129 | More than most peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | Treatment | 93325 |
86 | More than most peers in Cardiovascular Disease… |
| Ultrasound of heart blood flow, valves and chambers, follow-up | Treatment | 93321 |
84 | More than most peers in Cardiovascular Disease… |
| Heart muscle strain imaging | Treatment | 93356 |
40 | As often as other peers in Cardiovascular Disease… |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
17 | Less often than most peers in Cardiovascular Disease… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
77 | Less often than most peers in Cardiovascular Disease… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
75 | Less often than most peers in Cardiovascular Disease… |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other cardiovascular diseases at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other cardiovascular diseases in Green Bay 7
Same specialty, same city.
More connections — 22 related providers in 3 groups
Trained at Vanderbilt University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at Vanderbilt University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Nuclear medicine studies of heart muscle at rest and with stress and spect 7
Providers in WI who bill this service to Medicare most often.
Common questions
What does Dr. Witmer specialize in?
Dr. Witmer is a cardiovascular disease (cardiology) in Green Bay, WI. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Witmer located?
Dr. Witmer is listed at 2845 Greenbrier Rd Ste 310, Green Bay, WI 54311. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Witmer's phone number?
The number on file is (920) 288-8300. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Witmer?
Dr. Witmer's National Provider Identifier is 1033130653. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Witmer go to medical school?
Dr. Witmer attended Vanderbilt University School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Witmer have?
Dr. Witmer has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Witmer do most often?
According to Medicare billing data, Dr. Witmer performs imaging including nuclear medicine studies of heart muscle at rest and with stress and spect; provides treatments such as ultrasound of heart with color-depicted blood flow, rate, direction and valve function and routine electrocardiogram using at least 12 leads with interpretation and report only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Witmer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Witmer. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.