William Johnson, MD
NPI 1295756757 · Emergency Medical Services (Emergency Medicine) Physician · St Simons Island, GA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Johnson, MD is a Emergency Medical Services (Emergency Medicine) Physician provider in St Simons Island, GA (NPI 1295756757).
Provider details
- NPI number
- 1295756757
- Entity type
- Individual
- Primary specialty
- Emergency Medical Services (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 32549 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
501 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 233 | $167 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 120 | $115 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 95 | $8 |
| Critical Care, First 30-74 Minutes99291 | 38 | $201 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 15 | $67 |
Typical Medicare-allowed amounts for these services range $8–$201 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 41 | 41 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 40 | 39 |
| Cephalexin | 37 | 37 |
| Diclofenac Potassium | 29 | 28 |
| Ondansetronbrand: Ondansetron Odt | 24 | 24 |
| Cyclobenzaprine Hcl | 19 | 19 |
| Azithromycin | 16 | 16 |
Practice location
Mailing address
Additional practice locations (1)
- 14 Richland Medical Park Dr Ste 350Columbia, SC 29203-6896Phone: (803) 434-1663Fax: (803) 434-3894
Registry dates
- Enumerated
- 2006-07-21
- Last updated
- 2024-05-01
- Certified
- 2024-05-01
Frequently asked questions
- What is William Johnson's NPI number?
- William Johnson's National Provider Identifier (NPI) is 1295756757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Johnson's specialty?
- William Johnson is listed in the NPPES registry with a primary specialty of Emergency Medical Services (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is William Johnson located?
- William Johnson's practice location on file with NPPES is 108 Island Professional Park, St Simons Island, GA 31522-2880.
- What is William Johnson's phone number?
- The practice phone number listed in the NPPES registry for William Johnson is (912) 268-4372.
- Does William Johnson accept Medicare?
- William Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Johnson's NPI active?
- Yes — William Johnson's NPI (1295756757) is active in the NPPES registry as of the last update on 2024-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.