John Dennis Cayanan Alfonso, M.D.
Physical Medicine & Rehabilitation Physician · San Antonio, TX
John Dennis Cayanan Alfonso, M.D. is a physical medicine & rehabilitation physician with a practice address in San Antonio, Texas, and NPI 1558595660, issued on May 5, 2009. Check the license (Texas P4538, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Dennis Cayanan Alfonso
- Credential
- M.D.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- P4538 TX
Self-reported in NPPES; status is on the state search - Practice location
- 17503 LA Cantera Pkwy # 104-456, San Antonio, TX 78257
- Phone
- (210) 571-7100
- Enumerated
- May 5, 2009
- Record last updated
- Oct 9, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130906000586); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 2009
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 1,099 in Texas → Look up another NPI →
Verify John Dennis Cayanan Alfonso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P4538Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
156 Medicare Part D claims for 87 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. 64 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen35 claims
- Methocarbamol34 claims
- Gabapentin29 claims
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 Dennis Cayanan Alfonso among 1,099 physical medicine & rehabilitation physician records in Texas
John Dennis Cayanan Alfonso, M.D. is one of 1,099 physical medicine & rehabilitation physician records with a practice address in Texas. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 41% of them.
- NPI issued2009 · 41% of these records are older, 56% newer
- In a Medicare fileYes · 55% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Graduated2009 · median 2006 among the 512 with a school on file
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in Texas
There are 1,099 physical medicine & rehabilitation physician records in Texas.
All 1,099 in Texas → Every provider in San Antonio → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- Lei Zhang, MDSan Antonio, TX 782581518020734
- Trenton Lafleur, PT, DPTSan Antonio, TX 782591831869213
- Justin PapkeSan Antonio, TX 782511073161592
- Barry Hill, M.D.San Antonio, TX 782491952585242
- William Janes, M.D.San Antonio, TX 782491720069859
- Alex Willingham, M.D.San Antonio, TX 782491558342634
- Joshua FloresSan Antonio, TX 782451447177217
- Michele AlstonSan Antonio, TX 782401427477850
Common questions
What is John Dennis Cayanan Alfonso, M.D.'s NPI number?
John Dennis Cayanan Alfonso, M.D.'s National Provider Identifier (NPI) is 1558595660, issued on May 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is John Dennis Cayanan Alfonso, M.D. located?
The NPPES record lists a practice address at 17503 LA Cantera Pkwy # 104-456, San Antonio, TX, 78257. Phone: (210) 571-7100. Providers update this record themselves, so call before visiting.
How can I verify John Dennis Cayanan Alfonso, M.D.'s license?
NPPES lists Texas license number P4538, 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 Dennis Cayanan Alfonso, M.D. prescribe under Medicare Part D?
In 2024, John Dennis Cayanan Alfonso, M.D. had 156 Medicare Part D claims for 87 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. 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.