John Calhoon, MD
NPI 1568579548 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Calhoon, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in San Antonio, TX (NPI 1568579548).
Provider details
- NPI number
- 1568579548
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G3935 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (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
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Calhoon's NPI number?
- John Calhoon's National Provider Identifier (NPI) is 1568579548, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Calhoon's specialty?
- John Calhoon is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is John Calhoon located?
- John Calhoon's practice location on file with NPPES is 4647 Medical Dr, San Antonio, TX 78229-4403.
- What is John Calhoon's phone number?
- The practice phone number listed in the NPPES registry for John Calhoon is (210) 257-1400.
- Does John Calhoon accept Medicare?
- John Calhoon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Calhoon's NPI active?
- Yes — John Calhoon's NPI (1568579548) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.