Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Helen Ang Sy, MD
Pediatrics Physician in Anaheim, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215026794
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Registry record
Entity type Individual (Type 1)
Name Helen Ang Sy
Credential MD
Sex Female
Practice address 1820 W Lincoln Ave, Anaheim, CA, 92801
Phone (714) 635-0593
Fax (714) 774-4784
Enumeration date Oct 12, 2006
Last updated in NPPES Nov 9, 2011
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00A424300 | Medicaid | CA | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Helen Sy?
Helen Sy is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Altamed Health Services Corp Community Health Clinic/Center · Anaheim, CA NPI 1235376047 Matthew Lomeli Family Medicine Physician · Anaheim, CA NPI 1184945610 Carmen Perez Community Health Worker · Anaheim, CA NPI 1952737991 Michelle Lopez Clinic/Center · Anaheim, CA NPI 1548797970 Lupe Castro Health Educator · Anaheim, CA NPI 1245742584 Central City Community Health Center Inc Federally Qualified Health Center (FQHC) · Anaheim, CA NPI 1598386559
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-09.