Mustafa Rayaz, D.O.
Internal Medicine Physician · Dallas, TX
Mustafa Rayaz, D.O. is an internal medicine physician with a practice address in Dallas, Texas, and NPI 1558744128, issued on Jul 1, 2015. Check the license (Texas S9211, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mustafa Rayaz
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- S9211 TX
E-11557 AR
34.013971 OH
0116028050 VA
Self-reported in NPPES; status is on the state search - Practice location
- 4500 S Lancaster RD, Dallas, TX 75216
- Phone
- (214) 742-8387
- Enumerated
- Jul 1, 2015
- Record last updated
- Aug 25, 2023
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 4500 S Lancaster RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bethzaida AbdalPrimary Care Nurse Practitioner1427598754
- Abeba Abebe, NPFamily Nurse Practitioner1487262424
- Irene Abia-AngehPharmacist1851878862
- Olabamiji Abimbola, DSC, PA-CMedical Physician Assistant1619460938
- Daniel Abraham, RTCertified Respiratory Therapist1073813978
- Noel Abraham, PHARMACISTPharmacist1316572720
Verify Mustafa Rayaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S9211Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
56 Medicare Part D claims for 12 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Buprenorphine-Naloxone32 claims
- Buprenorphine Hcl20 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: $33.04
1 payment: food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Mustafa Rayaz among 9,175 internal medicine physician records in Texas
Mustafa Rayaz, D.O. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% 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 71% of them.
- NPI issued2015 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2023 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
956 internal medicine physician records list a practice address in Dallas
They are 956 of the 36,304 NPPES records with a practice address in Dallas, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Dallas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Albracht, MDDallas, TX 752161952330466
- Susy Ayaram, M.D.Dallas, TX 752161548220031
- Shemsu Balker, M.D.Dallas, TX 752161871545293
- Sameer Chaudhry, MDDallas, TX 752161134135510
- Monicah Gichinga-Mugwe, MDDallas, TX 752161376581470
- An Ho, M.D.Dallas, TX 752161326068370
- George Ivanovskis, M.D.Dallas, TX 752161144295023
- Steven Lilly, MDDallas, TX 752161891727871
Common questions
What is Mustafa Rayaz, D.O.'s NPI number?
Mustafa Rayaz, D.O.'s National Provider Identifier (NPI) is 1558744128, issued on Jul 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mustafa Rayaz, D.O. located?
The NPPES record lists a practice address at 4500 S Lancaster RD, Dallas, TX, 75216. Phone: (214) 742-8387. Providers update this record themselves, so call before visiting.
How can I verify Mustafa Rayaz, D.O.'s license?
NPPES lists Texas license number S9211, 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 Mustafa Rayaz, D.O. prescribe under Medicare Part D?
In 2024, Mustafa Rayaz, D.O. had 56 Medicare Part D claims for 12 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.