Physician Profile
Joseph Blackshear, MD practices cardiovascular disease in Jacksonville, FL. Joseph is a 1978 graduate of Mayo Medical School. Medicare claims data shows Joseph provided 130 services to 130 patients. The services billed most often include ultrasound of heart with color-depicted blood flow, rate, direction and valve function, ultrasound of heart with color-depicted blood flow, rate and valve function, and ultrasound of heart blood flow, valves and chambers, follow-up.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
4500 SAN PABLO RD S
Jacksonville, FL 32224
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.
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
Most searched procedures
Office and noninvasive testing
Advanced imaging
Consultations
Diagnostic testing
Diagnostics
Heart devices
Heart imaging
Heart procedures
Heart rhythm procedures
Imaging
Implants
Recovery & rehabilitation
Vascular imaging
130 services · 130 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
77 | |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | Treatment | 93325 |
21 | |
| Ultrasound of heart blood flow, valves and chambers, follow-up | Treatment | 93321 |
18 | |
| Ultrasound of heart, follow-up | Treatment | 93308 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Blackshear is a cardiologist in Jacksonville, FL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Cardiovascular Disease”.
NPI registry
Dr. Blackshear is listed at 4500 San Pablo Rd S, Jacksonville, FL 32224. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (904) 953-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Blackshear's National Provider Identifier is 1730176991. 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
Dr. Blackshear attended Mayo Medical School, graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
Dr. Blackshear has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Blackshear provides treatments such as ultrasound of heart with color-depicted blood flow, rate, direction and valve function and ultrasound of heart with color-depicted blood flow, rate and valve function. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Blackshear. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.