Joyce Ji, MD
NPI 1659752822 · Internal Medicine Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joyce Ji, MD is a Internal Medicine Physician provider in San Diego, CA (NPI 1659752822).
Provider details
- NPI number
- 1659752822
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- C200279 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
405 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 | 149 | $75 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 149 | $113 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 47 | $161 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 33 | $29 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 14 | $74 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
Practice location
Mailing address
Additional practice locations (2)
- 9300 Campus Point DrLa Jolla, CA 92037-1300Phone: (800) 926-8273Fax: (888) 539-8781
- 1 Barnes Jewish Hospital PlzDiv Im HospitalistSaint Louis, MO 63110-1003Phone: (314) 362-1700Fax: (314) 362-9878
Registry dates
- Enumerated
- 2015-06-14
- Last updated
- 2025-05-08
- Certified
- 2025-05-08
Frequently asked questions
- What is Joyce Ji's NPI number?
- Joyce Ji's National Provider Identifier (NPI) is 1659752822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Ji's specialty?
- Joyce Ji is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Ji located?
- Joyce Ji's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is Joyce Ji's phone number?
- The practice phone number listed in the NPPES registry for Joyce Ji is (800) 926-8273.
- Does Joyce Ji accept Medicare?
- Joyce Ji is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joyce Ji's NPI active?
- Yes — Joyce Ji's NPI (1659752822) is active in the NPPES registry as of the last update on 2025-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.