Hannah Sim, MD
NPI 1811036510 · Internal Medicine Physician · Baldwin Park, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hannah Sim, MD is a Internal Medicine Physician provider in Baldwin Park, CA (NPI 1811036510).
Provider details
- NPI number
- 1811036510
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A73398 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 512 | 187 |
| Amlodipine Besylate | 380 | 138 |
| Lisinopril | 295 | 106 |
| Losartan Potassium | 268 | 98 |
| Levothyroxine Sodium | 227 | 83 |
| Simvastatin | 180 | 64 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-06
- Last updated
- 2021-12-02
Frequently asked questions
- What is Hannah Sim's NPI number?
- Hannah Sim's National Provider Identifier (NPI) is 1811036510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hannah Sim's specialty?
- Hannah Sim is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hannah Sim located?
- Hannah Sim's practice location on file with NPPES is 1011 Baldwin Park Blvd, Baldwin Park, CA 91706-5806.
- What is Hannah Sim's phone number?
- The practice phone number listed in the NPPES registry for Hannah Sim is (626) 851-1011.
- Does Hannah Sim accept Medicare?
- Hannah Sim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hannah Sim's NPI active?
- Yes — Hannah Sim's NPI (1811036510) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.