Doris W. Chan, D.O.
Emergency Medicine Physician · Houston, TX
Doris W. Chan, D.O. is an emergency medicine physician with a practice address in Houston, Texas, and NPI 1124289053, issued on Jun 23, 2008. Check the license (Texas P8347, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Doris W. Chan
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- P8347 TX
Self-reported in NPPES; status is on the state search - Practice location
- 921 Gessner RD, Houston, TX 77024
- Phone
- (713) 242-3070
- Enumerated
- Jun 23, 2008
- Record last updated
- Sep 13, 2024
- Medicare enrollment
- Enrolled (PECOS I20150224000941); accepts Medicare assignment
- Medical or professional school
- Nova Southeastern College Of Osteo Medicine, 2008
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 921 Gessner RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Saikrishna Aleti, M.D.Internal Medicine Physician1497770077
- Marisol ArroyoGerontology Nurse Practitioner1699308601
- Muhammad AsifHospitalist Physician1578916490
- Rauvan Averick, MDEmergency Medicine Physician1801871603
- Karen Aycock, CRNACertified Registered Nurse Anesthetist1114379849
Verify Doris W. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P8347Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average emergency medicine physician in 2024
259 Medicare Part D claims for 171 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 50 claims were for opioids.
Most prescribed
- Acetaminophen-Codeine32 claims
- Cefdinir23 claims
- Ondansetron Hcl17 claims
- Tramadol Hcl14 claims
- Gabapentin13 claims
- Doxycycline Hyclate12 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: $31.45
1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 12,335 providers of this specialty with any payment received $953.79 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
- Memorial Hermann Hospital Based Physician GroupHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Doris W. Chan among 4,885 emergency medicine physician records in Texas
Doris W. Chan, D.O. is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% 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 41% of them.
- NPI issued2008 · 41% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2008 · median 2013 among the 2,779 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
818 emergency medicine physician records list a practice address in Houston
They are 818 of the 61,221 NPPES records with a practice address in Houston, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Houston → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Michelle Armada, MDHouston, TX 770241245499235
- Adan Atriham, MDHouston, TX 770241114957305
- Rauvan Averick, MDHouston, TX 770241801871603
- Nika Brusatori, M.D.Houston, TX 770241417974965
- Michael Cantu, M.D.Houston, TX 770241558387407
- Robert Carpenter, D.O.Houston, TX 770241538184999
- William Edwards, M.D.Houston, TX 770241306863840
- Katherine Healey, M.D.Houston, TX 770241174549026
Common questions
What is Doris W. Chan, D.O.'s NPI number?
Doris W. Chan, D.O.'s National Provider Identifier (NPI) is 1124289053, issued on Jun 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Doris W. Chan, D.O. located?
The NPPES record lists a practice address at 921 Gessner RD, Houston, TX, 77024. Phone: (713) 242-3070. Providers update this record themselves, so call before visiting.
How can I verify Doris W. Chan, D.O.'s license?
NPPES lists Texas license number P8347, 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 Doris W. Chan, D.O. prescribe under Medicare Part D?
In 2024, Doris W. Chan, D.O. had 259 Medicare Part D claims for 171 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.