NPPES file of Aug 9, 2026

Diego Rodrigo Valencia-Chavez, M.D

Internal Medicine Physician · San Antonio, TX

Diego Rodrigo Valencia-Chavez, M.D is an internal medicine physician with a practice address in San Antonio, Texas, and NPI 1588896922, issued on Aug 19, 2009. Check the license (Texas Q9535, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588896922
Name
Diego Rodrigo Valencia-Chavez
Credential
M.D
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
Q9535 TX
050943 CT
ME116294 FL
Self-reported in NPPES; status is on the state search
Practice location
18414 US Highway 281 N Ste 104, San Antonio, TX 78259
Phone
(210) 495-0224
Enumerated
Aug 19, 2009
Record last updated
Jan 9, 2025
Fax
(210) 495-0343
Medicare enrollment
Enrolled (PECOS I20170123001352); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →

Also registered at 18414 US Highway 281 N Ste 104

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Felicia Armstrong, MDInternal Medicine Physician1669652632
  2. Crystal Chatman-Brown, APRNFamily Nurse Practitioner1851309710
  3. Patricia Johnson, FNPFamily Nurse Practitioner1447621099
  4. Kimberly McDougall, ARNP, FNP-CFamily Nurse Practitioner1548978661
  5. David Medrano, FNPFamily Nurse Practitioner1972988632
  6. Carol Menzel-Anderson, M.D.Internal Medicine Physician1093816183

Verify Diego Rodrigo Valencia-Chavez in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license Q9535    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

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82% fewer Medicare Part D claims than the average internal medicine physician in 2024

560 Medicare Part D claims for 230 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 134 claims were for opioids.

  1. Diego Valencia-Chavez560
  2. Specialty average3,176

Most prescribed

  1. Tramadol Hcl52 claims
  2. Gabapentin45 claims
  3. Hydrocodone-Acetaminophen40 claims
  4. Acetaminophen-Codeine35 claims
  5. Celecoxib33 claims
  6. Pantoprazole Sodium23 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.

Industry payments in 2024: $170.85

1 payment: food and beverage; the largest payer was Abbott Laboratories. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Diego Valencia-Chavez$170.85
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Hospital Medicine Services OF TX, PLLCFredericksburg, TX
  2. San Antonio Internists PLLCSan Antonio, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Diego Rodrigo Valencia-Chavez among 9,175 internal medicine physician records in Texas

Diego Rodrigo Valencia-Chavez, M.D is one of 9,175 internal medicine physician records with a practice address in Texas. 82% 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 54% of them.

  • NPI issued2009 · 54% of these records are older, 42% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2007 · median 2004 among the 6,088 with a school on file
  • Record last updated2025 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

657 internal medicine physician records list a practice address in San Antonio

They are 657 of the 37,749 NPPES records with a practice address in San Antonio, and 9,175 internal medicine physician records in Texas.

All 9,175 in Texas → Every provider in San Antonio → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Felicia Armstrong, MDSan Antonio, TX 782591669652632
  2. Vivian Ayoub, M.D.San Antonio, TX 782591215971882
  3. Jimmy Fernandez, M.D.San Antonio, TX 782591851568950
  4. Zeba Gill, MDSan Antonio, TX 782591417980376
  5. Jibrail Kasperkhan, M.D.San Antonio, TX 782591245277300
  6. Carol Menzel-Anderson, M.D.San Antonio, TX 782591093816183
  7. Shelly Nickels, MDSan Antonio, TX 782591891088159
  8. Rebecca Quiroz, M.DSan Antonio, TX 782591235293457

Common questions

What is Diego Rodrigo Valencia-Chavez, M.D's NPI number?

Diego Rodrigo Valencia-Chavez, M.D's National Provider Identifier (NPI) is 1588896922, issued on Aug 19, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Diego Rodrigo Valencia-Chavez, M.D located?

The NPPES record lists a practice address at 18414 US Highway 281 N Ste 104, San Antonio, TX, 78259. Phone: (210) 495-0224. Providers update this record themselves, so call before visiting.

How can I verify Diego Rodrigo Valencia-Chavez, M.D's license?

NPPES lists Texas license number Q9535, 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 Diego Rodrigo Valencia-Chavez, M.D prescribe under Medicare Part D?

In 2024, Diego Rodrigo Valencia-Chavez, M.D had 560 Medicare Part D claims for 230 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.