James Hsiao, M.D.
NPI 1306022959 · Emergency Medicine Physician · La Mesa, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Hsiao, M.D. is a Emergency Medicine Physician provider in La Mesa, CA (NPI 1306022959).
Provider details
- NPI number
- 1306022959
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 239509 (NY)
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
18 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
1,030 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 | 474 | $173 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 341 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 97 | $119 |
| Critical Care, First 30-74 Minutes99291 | 90 | $213 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 16 | $70 |
| Insertion of Non-Tunneled Central Venous Tube for Infusion (5 Years Or Older)36556 | 12 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 70 | 70 |
| Cefuroxime Axetilbrand: Cefuroxime | 46 | 46 |
| Ondansetronbrand: Ondansetron Odt | 45 | 45 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 26 |
| Doxycycline Hyclate | 17 | 17 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 12 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-01-14
- Last updated
- 2008-11-25
Frequently asked questions
- What is James Hsiao's NPI number?
- James Hsiao's National Provider Identifier (NPI) is 1306022959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Hsiao's specialty?
- James Hsiao is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Hsiao located?
- James Hsiao's practice location on file with NPPES is 5555 Grossmont Center Dr, La Mesa, CA 91942-3019.
- What is James Hsiao's phone number?
- The practice phone number listed in the NPPES registry for James Hsiao is (410) 206-6613.
- Does James Hsiao accept Medicare?
- James Hsiao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Hsiao's NPI active?
- Yes — James Hsiao's NPI (1306022959) is active in the NPPES registry as of the last update on 2008-11-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.