John Charles Rayfield, MD
Emergency Medicine Physician · San Antonio, TX
John Charles Rayfield, MD is an emergency medicine physician with a practice address in San Antonio, Texas, and NPI 1972594588, issued on Nov 2, 2005. Check the license (Texas L5884, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Charles Rayfield
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- L5884 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3406 Mont Blanc, San Antonio, TX 78258
- Phone
- (210) 408-1196
- Enumerated
- Nov 2, 2005
- Record last updated
- Oct 3, 2024
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Verify John Charles Rayfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L5884Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average emergency medicine physician in 2024
71 Medicare Part D claims for 47 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John Charles Rayfield among 4,885 emergency medicine physician records in Texas
John Charles Rayfield, MD is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
400 emergency medicine physician records list a practice address in San Antonio
They are 400 of the 37,749 NPPES records with a practice address in San Antonio, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in San Antonio → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Allen, D.O.San Antonio, TX 782581225189988
- Charles FlowersSan Antonio, TX 782581346701901
- William Friedrich, DOSan Antonio, TX 782581417921479
- Jennifer Gonzales, D.O.San Antonio, TX 782581598991671
- Jamie Jaqua, MDSan Antonio, TX 782581639360811
- Nuha Kadri, MDSan Antonio, TX 782581235717752
- Richard Mendelssohn, M.D.San Antonio, TX 782581295770931
- Swetha Sridhar, M.D.San Antonio, TX 782581356553432
Common questions
What is John Charles Rayfield, MD's NPI number?
John Charles Rayfield, MD's National Provider Identifier (NPI) is 1972594588, issued on Nov 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Charles Rayfield, MD located?
The NPPES record lists a practice address at 3406 Mont Blanc, San Antonio, TX, 78258. Phone: (210) 408-1196. Providers update this record themselves, so call before visiting.
How can I verify John Charles Rayfield, MD's license?
NPPES lists Texas license number L5884, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Charles Rayfield, MD prescribe under Medicare Part D?
In 2024, John Charles Rayfield, MD had 71 Medicare Part D claims for 47 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.