Joseph Blackshear, MD
NPI 1730176991 · Cardiovascular Disease Physician · Jacksonville, FL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Blackshear, MD is a Cardiovascular Disease Physician provider in Jacksonville, FL (NPI 1730176991).
Provider details
- NPI number
- 1730176991
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME48955 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
130 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 77 | $66 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 21 | $3 |
| Ultrasound of Heart Blood Flow, Valves and Chambers, Follow-Up93321 | 18 | $7 |
| Ultrasound of Heart, Follow-Up93308 | 14 | $24 |
Typical Medicare-allowed amounts for these services range $3–$66 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-03
- Last updated
- 2024-04-30
- Certified
- 2024-04-30
Frequently asked questions
- What is Joseph Blackshear's NPI number?
- Joseph Blackshear's National Provider Identifier (NPI) is 1730176991, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Blackshear's specialty?
- Joseph Blackshear is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Blackshear located?
- Joseph Blackshear's practice location on file with NPPES is 4500 San Pablo Rd S, Jacksonville, FL 32224-1865.
- What is Joseph Blackshear's phone number?
- The practice phone number listed in the NPPES registry for Joseph Blackshear is (904) 953-2000.
- Does Joseph Blackshear accept Medicare?
- Joseph Blackshear is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Blackshear's NPI active?
- Yes — Joseph Blackshear's NPI (1730176991) is active in the NPPES registry as of the last update on 2024-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.