John Davidson, PA
NPI 1043480056 · Physician Assistant · Carbondale, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Davidson, PA is a Physician Assistant provider in Carbondale, IL (NPI 1043480056).
Provider details
- NPI number
- 1043480056
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
172 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 115 | $146 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 57 | $101 |
Typical Medicare-allowed amounts for these services range $101–$146 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$57 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 201 S 14th StHerrin, IL 62948-3631Phone: (618) 942-2171Fax: (618) 351-4917
- 2 S Hospital DrMurphysboro, IL 62966-3333Phone: (618) 684-3156Fax: (618) 529-0524
- 16091 Swingley Ridge RdSuite #100Chesterfield, MO 63017-2056Phone: (636) 728-2200
Registry dates
- Enumerated
- 2008-03-05
- Last updated
- 2021-01-11
- Certified
- 2021-01-11
Frequently asked questions
- What is John Davidson's NPI number?
- John Davidson's National Provider Identifier (NPI) is 1043480056, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Davidson's specialty?
- John Davidson is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Davidson located?
- John Davidson's practice location on file with NPPES is 405 W Jackson St, Carbondale, IL 62901-1462.
- What is John Davidson's phone number?
- The practice phone number listed in the NPPES registry for John Davidson is (618) 549-0721.
- Does John Davidson accept Medicare?
- John Davidson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Davidson's NPI active?
- Yes — John Davidson's NPI (1043480056) is active in the NPPES registry as of the last update on 2021-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.