Cassandra Sanossian, MD, RD
Internal Medicine Physician · Uniondale, NY
Cassandra Sanossian, MD, RD is an internal medicine physician with a practice address in Uniondale, New York, and NPI 1639531692, issued on Mar 28, 2016. Check the license (New York 293959, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Cassandra Sanossian
- Credential
- MD, RD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 293959 NY
Self-reported in NPPES; status is on the state search - Practice location
- 106 Charles Lindbergh Blvd, Uniondale, NY 11553
- Phone
- (516) 248-3737
- Enumerated
- Mar 28, 2016
- Record last updated
- Aug 23, 2022
- Medicare enrollment
- Enrolled (PECOS I20221020000797); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 106 Charles Lindbergh Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Boody, PAPhysician Assistant1134695828
- Umair Nasir, DOGastroenterology Physician1780172445
- Jennifer Slane, D.O.Gastroenterology Physician1336401371
Verify Cassandra Sanossian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 293959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average internal medicine physician in 2024
587 Medicare Part D claims for 203 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole167 claims
- Famotidine156 claims
- Sod Sulf-Potass Sulf-Mag Sulf60 claims
- Pantoprazole Sodium43 claims
- Linzess18 claims
- Lubiprostone16 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.
Bills Medicare through one group practice
- Medical Services OF Uniondale PCUniondale, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
6 internal medicine physician records list a practice address in Uniondale
They are 6 of the 411 NPPES records with a practice address in Uniondale, and 12,067 internal medicine physician records in New York.
All 6 in Uniondale → All 12,067 in New York → Every provider in Uniondale →
Other internal medicine physician records in New York
- Deborah Aanonsen, D.O.Staten Island, NY1952395717
- Nivedita Aanur, M.D.New York, NY1982833471
- Jay Aaron, MDGreat Neck, NY1245332956
- Ahmad AbadiPoughkeepsie, NY1780258517
- Jamsheed Abadi, MDBrooklyn, NY1477537496
- Antonieta Abarientos, MDNew Rochelle, NY1649285123
- Zurab Abayev, M.D.Brooklyn, NY1841283058
- Ehab Abaza, MDNew York, NY1114507555
- Vaidarshi Abbagoni, MDNew York, NY1871237495
- Muhammad AbbasRichmond Hill, NY1053996587
Common questions
What is Cassandra Sanossian, MD, RD's NPI number?
Cassandra Sanossian, MD, RD's National Provider Identifier (NPI) is 1639531692, issued on Mar 28, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Cassandra Sanossian, MD, RD located?
The NPPES record lists a practice address at 106 Charles Lindbergh Blvd, Uniondale, NY, 11553. Phone: (516) 248-3737. Providers update this record themselves, so call before visiting.
How can I verify Cassandra Sanossian, MD, RD's license?
NPPES lists New York license number 293959, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Cassandra Sanossian, MD, RD prescribe under Medicare Part D?
In 2024, Cassandra Sanossian, MD, RD had 587 Medicare Part D claims for 203 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.