NPPES file of Aug 9, 2026

Robert Horn, M.D.

Hematology & Oncology Physician · San Antonio, TX

Robert Horn, M.D. is a hematology & oncology physician with a practice address in San Antonio, Texas, and NPI 1629426705, issued on May 30, 2016. Check the license (Texas S1130, 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
1629426705
Name
Robert Horn
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License numbers
S1130 TX
281089 MA
Self-reported in NPPES; status is on the state search
Practice location
5206 Research Dr, San Antonio, TX 78240
Phone
(210) 595-5300
Enumerated
May 30, 2016
Record last updated
Aug 23, 2024
Medicare enrollment
Enrolled (PECOS I20240814005039); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 hematology & oncology physician records → All 922 in Texas → Look up another NPI →

Also registered at 5206 Research Dr

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

  1. Hycienth Ahaneku, MDHematology & Oncology Physician1811346695
  2. Emmalind Aponte, MDHematology & Oncology Physician1699985002
  3. Lokesh Bathla, MDTransplant Surgery Physician1053537290
  4. Sridhar Beeram, MDHematology & Oncology Physician1275626970
  5. Vinnette Bullock-Price, FNPFamily Nurse Practitioner1154336626
  6. M Canty, CNSClinical Nurse Specialist1477898088

Verify Robert Horn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license S1130    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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91% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

83 Medicare Part D claims for 44 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 19 claims were for opioids.

  1. Robert Horn83
  2. Specialty average877

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: $503.64

8 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Horn$503.64
  2. Specialty average$7,481.41

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

Bills Medicare through one group practice

  1. Texas Oncology PASan Antonio, TX

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

Robert Horn among 922 hematology & oncology physician records in Texas

Robert Horn, M.D. is one of 922 hematology & oncology physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 84% of them.

  • NPI issued2016 · 84% of these records are older, 12% newer
  • In a Medicare fileYes · 87% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated2016 · median 2004 among the 691 with a school on file
  • Record last updated2024 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Texas

There are 922 hematology & oncology physician records in Texas.

All 922 in Texas → Every provider in San Antonio → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Hycienth Ahaneku, MDSan Antonio, TX 782401811346695
  2. Emmalind Aponte, MDSan Antonio, TX 782401699985002
  3. Sridhar Beeram, MDSan Antonio, TX 782401275626970
  4. Melissa Crawley, MDSan Antonio, TX 782401487916813
  5. Paromita Datta, MDSan Antonio, TX 782401578744934
  6. Miguel Michel Ocampo, MDSan Antonio, TX 782401710474002
  7. Angel Mier Hicks, M.D.San Antonio, TX 782401376984807
  8. John Renshaw, M.D.San Antonio, TX 782401518168442

Common questions

What is Robert Horn, M.D.'s NPI number?

Robert Horn, M.D.'s National Provider Identifier (NPI) is 1629426705, issued on May 30, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Robert Horn, M.D. located?

The NPPES record lists a practice address at 5206 Research Dr, San Antonio, TX, 78240. Phone: (210) 595-5300. Providers update this record themselves, so call before visiting.

How can I verify Robert Horn, M.D.'s license?

NPPES lists Texas license number S1130, 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 Robert Horn, M.D. prescribe under Medicare Part D?

In 2024, Robert Horn, M.D. had 83 Medicare Part D claims for 44 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.