Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Christine Tian-I Ma, MD
Pediatrics Physician in Oakland, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225140395
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Registry record
Entity type Individual (Type 1)
Name Christine Tian-I Ma
Credential MD
Sex Female
Practice address 747 52nd St, Oakland, CA, 94609
Phone (510) 428-3000
Fax (510) 547-2702
Enumeration date Aug 31, 2006
Last updated in NPPES Jan 10, 2008
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 |
|---|---|---|---|
| 00A700970 | 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
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.
What specialty is Christine Ma?
Christine Ma 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.
Other providers at this practice address
Browse all → James Anderson Pediatric Radiology Physician · Oakland, CA NPI 1437152378 James Riddel Nurse Practitioner · Oakland, CA NPI 1942200928 Duard Enoch Diagnostic Radiology Physician · Oakland, CA NPI 1306838131 Howard Rosenfeld Pediatric Cardiology Physician · Oakland, CA NPI 1912993635 Casey Culbertson Pediatric Cardiology Physician · Oakland, CA NPI 1346237856 Kishor Avasarala Pediatric Cardiology Physician · Oakland, CA NPI 1508853011 James Helton Pediatric Cardiology Physician · Oakland, CA NPI 1235126749 Natalie Cvijanovich Pediatric Critical Care Medicine Physician · Oakland, CA NPI 1497742902
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-10.