Justin Williams, DO
NPI 1528565694 · Hospitalist Physician · Jacksonville, FL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Williams, DO is a Hospitalist Physician provider in Jacksonville, FL (NPI 1528565694).
Provider details
- NPI number
- 1528565694
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- OS18803 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 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
949 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 496 | $77 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 302 | $111 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 75 | $116 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 39 | $171 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 37 | $127 |
Typical Medicare-allowed amounts for these services range $77–$171 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 53 | 53 |
| Ondansetronbrand: Ondansetron Odt | 35 | 35 |
| Vancomycin Hcl | 27 | 26 |
| Doxycycline Hyclate | 24 | 24 |
| Furosemide | 18 | 15 |
| Atorvastatin Calcium | 17 | 17 |
| Oxycodone Hcl | 17 | 17 |
| Prednisone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-06
- Last updated
- 2022-08-23
- Certified
- 2022-08-23
Frequently asked questions
- What is Justin Williams's NPI number?
- Justin Williams's National Provider Identifier (NPI) is 1528565694, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Williams's specialty?
- Justin Williams is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Williams located?
- Justin Williams's practice location on file with NPPES is 820 Prudential Dr Ste 304, Jacksonville, FL 32207-8205.
- What is Justin Williams's phone number?
- The practice phone number listed in the NPPES registry for Justin Williams is (904) 202-3860.
- Does Justin Williams accept Medicare?
- Justin Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Williams's NPI active?
- Yes — Justin Williams's NPI (1528565694) is active in the NPPES registry as of the last update on 2022-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.