Xiaojuan Ma
NPI 1861161366 · Nurse Practitioner · San Diego, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xiaojuan Ma is a Nurse Practitioner provider in San Diego, CA (NPI 1861161366).
Provider details
- NPI number
- 1861161366
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 95016648 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
101 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 77 | $68 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 24 | $113 |
Typical Medicare-allowed amounts for these services range $68–$113 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 4025 Carmel View Rd Unit 131San Diego, CA 92130-2393Phone: (619) 565-3881
Registry dates
- Enumerated
- 2021-09-08
- Last updated
- 2023-01-12
- Certified
- 2023-01-12
Frequently asked questions
- What is Xiaojuan Ma's NPI number?
- Xiaojuan Ma's National Provider Identifier (NPI) is 1861161366, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xiaojuan Ma's specialty?
- Xiaojuan Ma is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Xiaojuan Ma located?
- Xiaojuan Ma's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is Xiaojuan Ma's phone number?
- The practice phone number listed in the NPPES registry for Xiaojuan Ma is (800) 926-8273.
- Does Xiaojuan Ma accept Medicare?
- Xiaojuan Ma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xiaojuan Ma's NPI active?
- Yes — Xiaojuan Ma's NPI (1861161366) is active in the NPPES registry as of the last update on 2023-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.