Heidi Chwan Ko, D.O.
Hematology & Oncology Physician · San Antonio, TX
Heidi Chwan Ko, D.O. is a hematology & oncology physician with a practice address in San Antonio, Texas, and NPI 1083008965, issued on Mar 27, 2015. Check the license (Texas S9919, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Heidi Chwan Ko
- Credential
- D.O.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- S9919 TX
Self-reported in NPPES; status is on the state search - Practice location
- 7979 Wurzbach RD, San Antonio, TX 78229
- Phone
- (210) 450-1143
- Enumerated
- Mar 27, 2015
- Record last updated
- Feb 8, 2022
- Fax
- (210) 450-0407
- Medicaid IDs
- 426972203 TX
426972202 TX - Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →
Also registered at 7979 Wurzbach RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christina Agyin, APRN-BC FNPFamily Nurse Practitioner1386831386
- Brittany Altermatt, ANPAdult Health Nurse Practitioner1902939358
- Elise Alvarez, MS, GCGenetic Counselor (M.S.)1609691005
- Shammi Anholt, PTPhysical Therapist1821745712
- Athanassios Argiris, MDHematology & Oncology Physician1174608509
- Sukeshi Arora, MDMedical Oncology Physician1386805604
Verify Heidi Chwan Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S9919Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $2,496.00
1 payment: compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Illumina, 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Heidi Chwan Ko among 922 hematology & oncology physician records in Texas
Heidi Chwan Ko, D.O. 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 2015, is newer than 80% of them.
- NPI issued2015 · 80% of these records are older, 16% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2022 · 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
- Georg Aue, MDSan Antonio, TX 782291215928080
- David Boldt, M.D.San Antonio, TX 782291447253042
- Jose Cruz, MDSan Antonio, TX 782291720043524
- Sreedevi Daggubati, MDSan Antonio, TX 782291952373656
- Timothy Fenske, MDSan Antonio, TX 782291104877935
- Francis Giles, M.D.San Antonio, TX 782291750480950
- Gregory Guzley, MDSan Antonio, TX 782291427020114
- David Haile, MDSan Antonio, TX 782291700993862
Common questions
What is Heidi Chwan Ko, D.O.'s NPI number?
Heidi Chwan Ko, D.O.'s National Provider Identifier (NPI) is 1083008965, issued on Mar 27, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Heidi Chwan Ko, D.O. located?
The NPPES record lists a practice address at 7979 Wurzbach RD, San Antonio, TX, 78229. Phone: (210) 450-1143. Providers update this record themselves, so call before visiting.
How can I verify Heidi Chwan Ko, D.O.'s license?
NPPES lists Texas license number S9919, 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.
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.