Natalie Shum, MD
NPI 1114936358 · Emergency Medicine Physician · Los Alamitos, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Natalie Shum, MD is a Emergency Medicine Physician provider in Los Alamitos, CA (NPI 1114936358).
Provider details
- NPI number
- 1114936358
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A91774 (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
19 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
547 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 198 | $9 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 189 | $187 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 90 | $129 |
| Critical Care, First 30-74 Minutes99291 | 45 | $231 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 25 | $191 |
Typical Medicare-allowed amounts for these services range $9–$231 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 26 | 25 |
| Prednisone | 25 | 25 |
| Mupirocin | 24 | 24 |
| Tramadol Hcl | 21 | 21 |
| Cephalexin | 20 | 20 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 20 | 19 |
| Ibuprofen | 16 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is Natalie Shum's NPI number?
- Natalie Shum's National Provider Identifier (NPI) is 1114936358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Natalie Shum's specialty?
- Natalie Shum is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Natalie Shum located?
- Natalie Shum's practice location on file with NPPES is 3751 Katella Ave, Los Alamitos, CA 90720-3101.
- What is Natalie Shum's phone number?
- The practice phone number listed in the NPPES registry for Natalie Shum is (562) 598-1311.
- Does Natalie Shum accept Medicare?
- Natalie Shum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Natalie Shum's NPI active?
- Yes — Natalie Shum's NPI (1114936358) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.