Ryan Blair Kieser, M.D.
Hematology & Oncology Physician · Houston, TX
Ryan Blair Kieser, M.D. is a hematology & oncology physician with a practice address in Houston, Texas, and NPI 1033568795, issued on Jun 3, 2016. Check the license (Texas S2815, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ryan Blair Kieser
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- S2815 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6445 Main St FL 24, Houston, TX 77030
- Phone
- (713) 441-9948
- Enumerated
- Jun 3, 2016
- Record last updated
- May 23, 2023
- Fax
- (713) 441-8791
- Medicare enrollment
- Enrolled (PECOS I20190827002115); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →
Also registered at 6445 Main St FL 24
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ethan Burns, MDHematology & Oncology Physician1962933705
- Stephanie Canales, APRN, AGNP-BCGeriatric Medicine (Family Medicine) Physician1639916851
- Charles Geyer, MDHematology & Oncology Physician1891795001
- Jian Guan, M.D.Hematology & Oncology Physician1053799304
- Savannah Prantil, AGACNP-BCAcute Care Nurse Practitioner1790391746
- Akshjot Puri, MDHematology & Oncology Physician1770981490
Verify Ryan Blair Kieser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S2815Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
463 Medicare Part D claims for 92 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims. 52 claims were for opioids.
Most prescribed
- Ondansetron Odt39 claims
- Prochlorperazine Maleate37 claims
- Sprycel33 claims
- Eliquis31 claims
- Pregabalin31 claims
- Hydrocodone-Acetaminophen28 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.
Bills Medicare through 2 group practices
- Houston Methodist Specialty PhysiciansHouston, TX
- Tmh Physician Associates PLLCSugar Land, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Blair Kieser among 922 hematology & oncology physician records in Texas
Ryan Blair Kieser, 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 updated2023 · 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 Houston → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ana AparicioHouston, TX 770301720033657
- Ahmed Eid, M.D.Houston, TX 770301649227406
- Susan Escudier, M.D.Houston, TX 770301831138221
- Lawrence Foote, M.D.Houston, TX 770301295777456
- Charles Geyer, MDHouston, TX 770301891795001
- Linus Ho, M.D., PH.D.Houston, TX 770301376525980
- Kevin Hude, M.D.Houston, TX 770301114996303
- Charles Manner, M. D.Houston, TX 770301760443782
Common questions
What is Ryan Blair Kieser, M.D.'s NPI number?
Ryan Blair Kieser, M.D.'s National Provider Identifier (NPI) is 1033568795, issued on Jun 3, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Blair Kieser, M.D. located?
The NPPES record lists a practice address at 6445 Main St FL 24, Houston, TX, 77030. Phone: (713) 441-9948. Providers update this record themselves, so call before visiting.
How can I verify Ryan Blair Kieser, M.D.'s license?
NPPES lists Texas license number S2815, 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 Ryan Blair Kieser, M.D. prescribe under Medicare Part D?
In 2024, Ryan Blair Kieser, M.D. had 463 Medicare Part D claims for 92 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.
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.