Quick answers
- Does Christina H. Ma accept Medicare assignment?
- Medicare's clinician data says Christina H. Ma may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Christina H. Ma see?
- In 2024, CMS data shows 469 Original Medicare patients and 1,694 services for Christina H. Ma. This counts Original Medicare only and measures volume, not quality.
- What is Christina H. Ma's NPI number?
- 1295382489. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Christina H. Ma, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 469 |
|---|---|
| Services billed to Medicare | 1,694 |
| Different services or procedures | 85 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)214 services
- Removal of fingernails or toenails, 6 or more nails (11721)187 services
- X-ray of foot, minimum of 3 views (73630)120 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)100 services
- Removal of skin and tissue, 20.0 sq cm or less (11042)85 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes75%
- Chronic kidney disease49%
- Arthritis48%
- Ischemic heart disease41%
Hospitals where Christina H. Ma works
Medicare's Facility Affiliation Data lists Christina H. Ma at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Mercy Medical CenterMerced, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050444
Practice locations
Addresses where Christina H. Ma is enrolled with Medicare (CMS data updated October 2, 2026).
- 3349 G St, Suite CMerced, CA 95340 (209) 580‑4638
- 847 W Childs AveMerced, CA 95341 (209) 722‑4842
- 857 W Childs AveMerced, CA 95341 (209) 722‑4842
Group practices
Medicare enrollment lists Christina H. Ma as a member of these groups (CMS data updated October 2, 2026).
- Golden Valley Health Centers113 clinicians in the group
- Provident Primary Care Inc10 clinicians in the group
Specialties
- Podiatryprimary
Other podiatrists in Merced
Clinicians with the same Medicare primary specialty in Merced, CA — not a recommendation.
Other clinicians in Golden Valley Health Centers
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DPM |
|---|---|
| Graduation year | 2020 (6 years since podiatric medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1295382489 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians