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Edit this profileAt a glance
- 2557 Mowry Ave Ste 33, Fremont, CA 94538
About Dr. Nicholson
William F. Nicholson, M.D. is a healthcare provider in Fremont, CA specializing in cardiovascular disease. William trained at University of Southern California Keck School of Medicine, graduating in 1981. William is also listed as specializing in internal medicine. According to Medicare claims data, William cared for 915 Medicare patients across 1,403 services. The services billed most often include routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and ultrasound of heart with color-depicted blood flow, rate, direction and valve function. This provider record is associated with NPI 1144381278.
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
- (510) 745-8100
- Email not available
Practice Locations
2557 MOWRY AVE STE 33
Fremont, CA 94538
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
Specialized cardiovascular care
Most searched conditions
Coronary and ischemic heart disease
Heart failure and cardiomyopathy
Heart rhythm
Symptoms and functional disorders
Valve and structural heart
Vascular and risk factors
Artery & vascular
Heart inflammation
Heart muscle
Heart valves
Vascular disease
Procedures & services
Advanced imaging
- Cardiac computed tomography
- Coronary artery calcium scan
- Transesophageal echocardiogram
- Cardiac magnetic resonance imaging
- Nuclear cardiac stress imaging
Catheter-based diagnosis and treatment
Heart & circulation
Office and noninvasive testing
- Cardiology consultation
- Exercise stress test
- Pharmacologic cardiac stress test
- Stress echocardiogram
- Transthoracic echocardiogram
- Ambulatory blood-pressure monitoring
Structural heart
Most searched procedures
Consultations
Diagnostic testing
Diagnostics
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
Heart procedures
Heart rhythm procedures
- Radiofrequency ablation
Imaging
Implants
Recovery & rehabilitation
Vascular imaging
Procedures Most Often Billed to Medicare
1,403 services · 915 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
780 | More often than most peers in Cardiovascular Disease |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
67 | 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 |
497 | More often than most peers in Cardiovascular Disease |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
37 | Less often than most peers in Cardiovascular Disease |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
22 | As often as other 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.
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 cardiologists in Fremont 8
Same specialty, same city.
Trained at University of Southern California Keck School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1981 at University of Southern California Keck School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is William F. Nicholson's specialty?
William F. Nicholson is a cardiologist in Fremont, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Cardiovascular Disease”.
NPI registry
Where can I find William F. Nicholson?
William F. Nicholson is listed at 2557 Mowry Ave Ste 33, Fremont, CA 94538. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact William F. Nicholson?
The number on file is (510) 745-8100. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William F. Nicholson's NPI number?
William F. Nicholson's National Provider Identifier is 1144381278. 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
What is William F. Nicholson's education?
William F. Nicholson attended University of Southern California Keck School of Medicine, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How long has William F. Nicholson been practicing?
William F. Nicholson has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What is William F. Nicholson known for?
According to Medicare billing data, William F. Nicholson provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only and ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William F. Nicholson confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William F. Nicholson. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.