Philip Gregory Tan Ong, MD
Pulmonary Disease Physician · San Antonio, TX
Philip Gregory Tan Ong, MD is a pulmonary disease physician with a practice address in San Antonio, Texas, and NPI 1093965907, issued on Sep 27, 2008. Check the license (Texas P9678, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Philip Gregory Tan Ong
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- P9678 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4502 Medical Dr, San Antonio, TX 78229
- Phone
- (210) 358-4000
- Enumerated
- Sep 27, 2008
- Record last updated
- Jul 21, 2022
- Medicaid ID
- 338967808 TX
- Medicare enrollment
- Enrolled (PECOS I20140626000570); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 967 in Texas → Look up another NPI →
Also registered at 4502 Medical Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aaron Abarbanell, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1245497809
- Ayham AbdelAnesthesiology Physician1467147496
- Ali Abedi, M.D.Pulmonary Disease Physician1346566312
- Jordan Abel, M.D.Infectious Disease Physician1417273301
- Aesha Aboueisha, MDHospitalist Physician1225527815
- Seena Abraham, MDFamily Medicine Physician1306338561
Verify Philip Gregory Tan Ong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P9678Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
154 Medicare Part D claims for 40 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Prednisone12 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: $6,336.18
27 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 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.
Bills Medicare through one group practice
- University OF Texas Health Science Center AT San AntonioSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Philip Gregory Tan Ong among 967 pulmonary disease physician records in Texas
Philip Gregory Tan Ong, MD is one of 967 pulmonary disease physician records with a practice address in Texas. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 34% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2004 · median 2001 among the 773 with a school on file
- Record last updated2022 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Texas
There are 967 pulmonary disease physician records in Texas.
All 967 in Texas → Every provider in San Antonio → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Charles Andrews, M.D.San Antonio, TX 782291467459578
- Antonio Anzueto, MDSan Antonio, TX 782291053428128
- Alfredo Conde, M.D.San Antonio, TX 782291194803585
- Stephen Derdak, D.O.San Antonio, TX 782291659471027
- John Holcomb, M.D.San Antonio, TX 782291811994916
- Maria Angela Hospenthal, MDSan Antonio, TX 782291750498812
- Soma Jyothula, MDSan Antonio, TX 782291770669624
- Arturo Lopez, MDSan Antonio, TX 782291932137882
Common questions
What is Philip Gregory Tan Ong, MD's NPI number?
Philip Gregory Tan Ong, MD's National Provider Identifier (NPI) is 1093965907, issued on Sep 27, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Philip Gregory Tan Ong, MD located?
The NPPES record lists a practice address at 4502 Medical Dr, San Antonio, TX, 78229. Phone: (210) 358-4000. Providers update this record themselves, so call before visiting.
How can I verify Philip Gregory Tan Ong, MD's license?
NPPES lists Texas license number P9678, 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 Philip Gregory Tan Ong, MD prescribe under Medicare Part D?
In 2024, Philip Gregory Tan Ong, MD had 154 Medicare Part D claims for 40 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.