Tiffany Sin, DO
Emergency Medicine Physician · Montclair, CA
Tiffany Sin, DO is an emergency medicine physician with a practice address in Montclair, California, and NPI 1982196184, issued on Jun 4, 2018. Check the license (California 20A19117, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tiffany Sin
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20A19117 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5000 San Bernardino St, Montclair, CA 91763
- Phone
- (909) 625-5411
- Enumerated
- Jun 4, 2018
- Record last updated
- Oct 27, 2023
- Medicare enrollment
- Enrolled (PECOS I20211012001313); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 5000 San Bernardino St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janice BaughmanPhysician Assistant1548926066
- Theomal Kurera, M.D.Emergency Medicine Physician1386718831
- Glenn Morataya, PHARM. D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1609247683
- David Nguyen, DOFamily Medicine Physician1669961801
- Minn Soe, M.D.Anesthesiology Physician1396759643
- Erik Wiele, DOGeneral Practice Physician1619405875
Verify Tiffany Sin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A19117Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average emergency medicine physician in 2024
610 Medicare Part D claims for 331 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 56 claims were for opioids.
Most prescribed
- Ondansetron Odt60 claims
- Prednisone45 claims
- Cephalexin42 claims
- Hydrocodone-Acetaminophen38 claims
- Albuterol Sulfate Hfa36 claims
- Ibuprofen30 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
- Southern California Permanente Medical GroupFontana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tiffany Sin among 7,751 emergency medicine physician records in California
Tiffany Sin, DO is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 81% of them.
- NPI issued2018 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2011 among the 4,560 with a school on file
- Record last updated2023 · 59% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Montclair → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Allen, M.D.Montclair, CA 917631841202330
- Akash Gupta, M.D.Montclair, CA 917631417969742
- Theomal Kurera, M.D.Montclair, CA 917631386718831
- Paul Molinaro, M.D.Montclair, CA 917631881606051
- Sharon Dabby, MDOntario, CA 917611609953124
- Stephen BolenPomona, CA 917661215326376
- Donald Barceloux, M.D.Pomona, CA 917671295746386
- Wesley Curry, M.DPomona, CA 917671194774935
Common questions
What is Tiffany Sin, DO's NPI number?
Tiffany Sin, DO's National Provider Identifier (NPI) is 1982196184, issued on Jun 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Tiffany Sin, DO located?
The NPPES record lists a practice address at 5000 San Bernardino St, Montclair, CA, 91763. Phone: (909) 625-5411. Providers update this record themselves, so call before visiting.
How can I verify Tiffany Sin, DO's license?
NPPES lists California license number 20A19117, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tiffany Sin, DO prescribe under Medicare Part D?
In 2024, Tiffany Sin, DO had 610 Medicare Part D claims for 331 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.