Siayareh Rambally, M.D.
Hematology & Oncology Physician · Dallas, TX
Siayareh Rambally, M.D. is a hematology & oncology physician with a practice address in Dallas, Texas, and NPI 1811142581, issued on Nov 22, 2008. Check the license (Texas N5959, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Siayareh Rambally
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- N5959 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5323 Harry Hines Blvd, Dallas, TX 75390
- Phone
- (214) 645-4673
- Enumerated
- Nov 22, 2008
- Record last updated
- Jun 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (214) 645-2615
- Medicare enrollment
- Enrolled (PECOS I20130820000437); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 5323 Harry Hines Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ali Abbas, MDStudent in an Organized Health Care Education/Training Program1447822507
- Laila Abbas, MDStudent in an Organized Health Care Education/Training Program1861132524
- Eileen Abbasi, CRNACertified Registered Nurse Anesthetist1588918981
- Mina Abbassi-Ghanavati, MDObstetrics & Gynecology Physician1154509610
- Abier Abdelnaby, M.D.Colon & Rectal Surgery Physician1831312503
- Ahmed AbdiStudent in an Organized Health Care Education/Training Program1952095184
Verify Siayareh Rambally in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N5959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
391 Medicare Part D claims for 70 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims. 81 claims were for opioids.
Most prescribed
- Hydroxyurea103 claims
- Eliquis52 claims
- Hydrocodone-Acetaminophen34 claims
- Oxycodone Hcl28 claims
- Besremi25 claims
- Hydromorphone Hcl18 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $26.43
1 payment: food and beverage; the largest payer was Celgene Corporation. 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.
Bills Medicare through one group practice
- University OF Texas Southwestern Medical Center AT DallasDallas, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in Texas
There are 922 hematology & oncology physician records in Texas.
Other hematology & oncology physician records in Texas
- Kanza Abbas, M.D.Houston, TX1396065934
- Elham Abbasi-Hafshejani, M.D.The Woodlands, TX1306856513
- Raghad Abdul-Karim, MDMcAllen, TX1114207172
- Seyed Abedi, M.D.,PH.D.Cedar Park, TX1033567409
- Muhammad Abid, M.D.Lubbock, TX1639480437
- Ambrose Aboud, MDEl Paso, TX1407843873
- Hesham Abowali, MDGalveston, TX1447806955
- Joel Abramowitz, M.D., PHDHouston, TX1447220413
- Hussna Abunafeesa, M.DDallas, TX1902338726
- Prashanth Adapala, M.D.Marble Falls, TX1740484336
Common questions
What is Siayareh Rambally, M.D.'s NPI number?
Siayareh Rambally, M.D.'s National Provider Identifier (NPI) is 1811142581, issued on Nov 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Siayareh Rambally, M.D. located?
The NPPES record lists a practice address at 5323 Harry Hines Blvd, Dallas, TX, 75390. Phone: (214) 645-4673. Providers update this record themselves, so call before visiting.
How can I verify Siayareh Rambally, M.D.'s license?
NPPES lists Texas license number N5959, 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 Siayareh Rambally, M.D. prescribe under Medicare Part D?
In 2024, Siayareh Rambally, M.D. had 391 Medicare Part D claims for 70 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Siayareh Rambally, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.