Diane M. Sixsmith, MD
Emergency Medicine Physician · Flushing, NY
Diane M. Sixsmith, MD is an emergency medicine physician with a practice address in Flushing, New York, and NPI 1043237779, issued on Jul 17, 2006. Check the license (New York 122203, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Diane M. Sixsmith
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 122203 NY
Self-reported in NPPES; status is on the state search - Practice location
- 56-45 Main St, Flushing, NY 11355
- Phone
- (718) 670-1231
- Enumerated
- Jul 17, 2006
- Record last updated
- Nov 2, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (516) 437-4167
- Medicaid ID
- 00229896 NY
- Medicare enrollment
- Enrolled (PECOS I20080923000210); may accept Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 1973
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at 56-45 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Umair Ansari, M.D.Student in an Organized Health Care Education/Training Program1639794555
- Ryan Bernard, DNP, CRNACertified Registered Nurse Anesthetist1427730225
- Eric Browner, M.D.Pediatric Emergency Medicine (Emergency Medicine) Physician1730486846
- Shiau Chin, M.D.Emergency Medicine Physician1700101268
- Diana Fellin, CPNPNurse Practitioner1700808557
- Seth Goldbarg, MDClinical Cardiac Electrophysiology Physician1245279272
Verify Diane M. Sixsmith 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 122203Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average emergency medicine physician in 2024
175 Medicare Part D claims for 122 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin33 claims
- Sulfamethoxazole-Trimethoprim15 claims
- Cephalexin11 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
- Optum Urgent Care PLLCLittle Neck, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane M. Sixsmith among 5,025 emergency medicine physician records in New York
Diane M. Sixsmith, MD is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 72% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1973 · median 2013 among the 3,232 with a school on file
- Record last updated2010 · 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
92 emergency medicine physician records list a practice address in Flushing
They are 92 of the 6,354 NPPES records with a practice address in Flushing, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Flushing → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ursino Abucay, MDFlushing, NY 113551245258698
- David Barlas, MDFlushing, NY 113551083632434
- Chien Jung Chu, MDFlushing, NY 113551245281310
- Sanjey Gupta, MDFlushing, NY 113551770508046
- Ben Hsu, MDFlushing, NY 113551467474205
- Heidi Ladner, MDFlushing, NY 113551376561241
- Jeffrey Levine, MDFlushing, NY 113551518903210
- Brenda Liu, MDFlushing, NY 113551083628549
Common questions
What is Diane M. Sixsmith, MD's NPI number?
Diane M. Sixsmith, MD's National Provider Identifier (NPI) is 1043237779, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diane M. Sixsmith, MD located?
The NPPES record lists a practice address at 56-45 Main St, Flushing, NY, 11355. Phone: (718) 670-1231. Providers update this record themselves, so call before visiting.
How can I verify Diane M. Sixsmith, MD's license?
NPPES lists New York license number 122203, 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 Diane M. Sixsmith, MD prescribe under Medicare Part D?
In 2024, Diane M. Sixsmith, MD had 175 Medicare Part D claims for 122 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.