Sing Long Tung, MD
Obstetrics & Gynecology Physician · Santa Ana, CA
Sing Long Tung, MD is an obstetrics & gynecology physician with a practice address in Santa Ana, California, and NPI 1619913720, issued on Jun 20, 2006. Check the license (California D33253, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sing Long Tung
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- D33253 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2621 S Bristol, Santa Ana, CA 92704
- Phone
- (714) 754-0498
- Enumerated
- Jun 20, 2006
- Record last updated
- Dec 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (714) 754-0494
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Sing Long Tung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license D33253Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
17 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Sing Long Tung among 5,088 obstetrics & gynecology physician records in California
Sing Long Tung, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2010 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Santa Ana → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Emad Hashemi, M.D.Santa Ana, CA 927041568492759
- Hubert Jeng, M.DSanta Ana, CA 927041134182850
- George Kallins, M.D.Santa Ana, CA 927041578756581
- Jenny Lee, M.D.Santa Ana, CA 927041801057278
- Jaime Ludmir, M.DSanta Ana, CA 927041265539712
- Van Nguyen, DOSanta Ana, CA 927041205845237
- Diemchi Nguyenphuc, MDSanta Ana, CA 927041629104930
- Janel Yoshida, MDSanta Ana, CA 927041538112826
Common questions
What is Sing Long Tung, MD's NPI number?
Sing Long Tung, MD's National Provider Identifier (NPI) is 1619913720, issued on Jun 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sing Long Tung, MD located?
The NPPES record lists a practice address at 2621 S Bristol, Santa Ana, CA, 92704. Phone: (714) 754-0498. Providers update this record themselves, so call before visiting.
How can I verify Sing Long Tung, MD's license?
NPPES lists California license number D33253, 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 Sing Long Tung, MD prescribe under Medicare Part D?
In 2024, Sing Long Tung, MD had 17 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.