Doctor profile · Federal record
Dr. Christina Ma, M.D.
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Santa Ana, CA
- NPI 1891052742
- Accepts Medicare
- MIPS 86.3 / 100 · 2023
- 14 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1100 N Tustin Ave Ste E
Santa Ana, CA 927053509
(310) 267-8797
Credentials & registration
- NPI registered
- April 2012 — 14 yrs on file
- Profile last updated
- November 17, 2025
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State license (1)
- California #A129287
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1891052742. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
11,894
Distinct HCPCS
10
Medicare allowed
$142,659
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
A9575 |
Injection, gadoterate meglumine, 0.1 ml | 6,900 | 42 | $0 | |
Q9967 |
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 4,147 | 49 | $0 | |
76700 |
Complete ultrasound scan of abdomen | 198 | 197 | $134 | |
93880 |
Ultrasound of both sides of head and neck blood flow | 117 | 116 | $224 | |
76770 |
Complete ultrasound scan behind abdominal cavity | 81 | 80 | $127 | |
71250 |
Ct scan of chest without contrast | 78 | 77 | $155 | |
75571 |
Ct scan of heart with evaluation of blood vessel calcium | 63 | 63 | $118 | |
76775 |
Limited ultrasound scan behind abdominal cavity | 59 | 59 | $67 | |
76705 |
Limited ultrasound scan of abdomen | 53 | 53 | $101 | |
74178 |
Ct scan of abdomen and pelvis before and after contrast | 27 | 27 | $418 |
In context: peer comparison
Among 8 peers in Santa Ana Diagnostic Radiology Physician, average services per provider: 303. This provider delivers 39× the peer median.Open Payments
Industry payments received
All-time total
$26
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boston Scientific Corporation | 1 | $26.41 |
By nature of payment
Frequently asked questions
What is Dr. Christina Ma's medical specialty?
Dr. Christina Ma practices Diagnostic Radiology Physician in Santa Ana, CA.
Where does Dr. Christina Ma practice?
Dr. Christina Ma practices at 1100 N Tustin Ave Ste E, Santa Ana, CA 927053509. Office phone: 3102678797.
What is Dr. Christina Ma's NPI?
Dr. Christina Ma's National Provider Identifier (NPI) is 1891052742, issued by NPPES.
Does Dr. Christina Ma accept Medicare assignment?
Yes. Dr. Christina Ma accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christina Ma commonly perform?
Top Medicare-reported procedures in 2023: Injection, gadoterate meglumine, 0.1 ml (HCPCS A9575); Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS Q9967); Complete ultrasound scan of abdomen (HCPCS 76700). Source: CMS Medicare Physician & Other Practitioners file.