Helen Sun, MD
Internal Medicine Physician · Daly City, CA
Helen Sun, MD is an internal medicine physician with a practice address in Daly City, California, and NPI 1952966442, issued on May 9, 2019. Check the license (California A176803, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Helen Sun
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A176803 CA
Self-reported in NPPES; status is on the state search - Practice location
- 211 Eastmoor Ave, Daly City, CA 94015
- Phone
- (650) 550-3923
- Enumerated
- May 9, 2019
- Record last updated
- Apr 18, 2022
- Medicare enrollment
- Enrolled (PECOS I20220524002522); accepts Medicare assignment
- Entity
- Type 1 · individual
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Also registered at 211 Eastmoor Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Helen Sun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A176803Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,524 Medicare Part D claims for 291 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium403 claims
- Amlodipine Besylate341 claims
- Losartan Potassium175 claims
- Metformin Hcl135 claims
- Metoprolol Succinate95 claims
- Lisinopril65 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.
Industry payments in 2024: $107.30
1 payment: food and beverage; the largest payer was Axonics, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- North East Medical ServicesDaly City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Helen Sun among 17,696 internal medicine physician records in California
Helen Sun, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2016 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 internal medicine physician records list a practice address in Daly City
They are 56 of the 1,606 NPPES records with a practice address in Daly City, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Daly City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kenneth Chuang, M.D.Daly City, CA 940151568492445
- Jesus Roland Gatpolintan, M.D.Daly City, CA 940151720064488
- Daniel Hwang, M.D.Daly City, CA 940151871683532
- John Lai, M.D.Daly City, CA 940151457398406
- Damon Lee, MDDaly City, CA 940151922095256
- Shu May Lee, M.D.Daly City, CA 940151689614992
- Karl Lee, M.D.Daly City, CA 940151093746703
- Michael McNamara, M.D.Daly City, CA 940151235220658
Common questions
What is Helen Sun, MD's NPI number?
Helen Sun, MD's National Provider Identifier (NPI) is 1952966442, issued on May 9, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Helen Sun, MD located?
The NPPES record lists a practice address at 211 Eastmoor Ave, Daly City, CA, 94015. Phone: (650) 550-3923. Providers update this record themselves, so call before visiting.
How can I verify Helen Sun, MD's license?
NPPES lists California license number A176803, 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 Helen Sun, MD prescribe under Medicare Part D?
In 2024, Helen Sun, MD had 2,524 Medicare Part D claims for 291 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.