Joyce Wang, M.D.
NPI 1225393101 · Emergency Medicine Physician · La Mesa, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joyce Wang, M.D. is a Emergency Medicine Physician provider in La Mesa, CA (NPI 1225393101).
Provider details
- NPI number
- 1225393101
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A140282 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
563 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 250 | $172 |
| Critical Care, First 30-74 Minutes99291 | 88 | $212 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 71 | $119 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 65 | $8 |
| Ultrasound of Heart, Follow-Up93308 | 38 | $25 |
| Ultrasound Scan of Chest76604 | 23 | $27 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefuroxime Axetilbrand: Cefuroxime | 17 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 15 |
| Ondansetronbrand: Ondansetron Odt | 15 | 13 |
| Doxycycline Hyclate | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-07-07
- Last updated
- 2021-11-15
- Certified
- 2021-10-30
Frequently asked questions
- What is Joyce Wang's NPI number?
- Joyce Wang's National Provider Identifier (NPI) is 1225393101, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Wang's specialty?
- Joyce Wang is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Wang located?
- Joyce Wang's practice location on file with NPPES is 5555 Grossmont Center Dr, La Mesa, CA 91942-3019.
- What is Joyce Wang's phone number?
- The practice phone number listed in the NPPES registry for Joyce Wang is (619) 740-6000.
- Does Joyce Wang accept Medicare?
- Joyce Wang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joyce Wang's NPI active?
- Yes — Joyce Wang's NPI (1225393101) is active in the NPPES registry as of the last update on 2021-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.