Christina Chen, DO
NPI 1952661829 · Rheumatology Physician · Covina, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Chen, DO is a Rheumatology Physician provider in Covina, CA (NPI 1952661829).
Provider details
- NPI number
- 1952661829
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A13361 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,945 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 621 | $143 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 347 | $18 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 304 | $86 |
| Measurement of Antibody for Assessment of Autoimmune Disorder, Any Method86235 | 266 | $18 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 187 | $16 |
| Administration of Chemotherapy Into Vein, Each Additional Hour |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 265 | 88 |
| Prednisone | 253 | 93 |
| Gabapentin | 228 | 73 |
| Baclofen | 217 | 91 |
| Pregabalin | 197 | 64 |
| Alendronate Sodium | 193 | 77 |
| Methotrexate Sodiumbrand: Methotrexate | 192 | 73 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,756 across 228 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-24
- Last updated
- 2017-07-13
Frequently asked questions
- What is Christina Chen's NPI number?
- Christina Chen's National Provider Identifier (NPI) is 1952661829, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Chen's specialty?
- Christina Chen is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Christina Chen located?
- Christina Chen's practice location on file with NPPES is 500 W San Bernardino Rd Ste a, Covina, CA 91722-3797.
- What is Christina Chen's phone number?
- The practice phone number listed in the NPPES registry for Christina Chen is (626) 966-1909.
- Does Christina Chen accept Medicare?
- Christina Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Chen's NPI active?
- Yes — Christina Chen's NPI (1952661829) is active in the NPPES registry as of the last update on 2017-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.