Simon Baek, M.D.
NPI 1821316209 · Internal Medicine Physician · La Habra, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Simon Baek, M.D. is a Internal Medicine Physician provider in La Habra, CA (NPI 1821316209).
Provider details
- NPI number
- 1821316209
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G077818 (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
16 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 · 110 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 706 | 269 |
| Amlodipine Besylate | 314 | 121 |
| Losartan Potassium | 296 | 113 |
| Lisinopril | 257 | 96 |
| Levothyroxine Sodium | 218 | 77 |
| Rosuvastatin Calcium | 185 | 68 |
| Hydrocodone/Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-11
- Last updated
- 2021-11-18
- Certified
- 2021-11-18
Frequently asked questions
- What is Simon Baek's NPI number?
- Simon Baek's National Provider Identifier (NPI) is 1821316209, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Simon Baek's specialty?
- Simon Baek is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Simon Baek located?
- Simon Baek's practice location on file with NPPES is 2151 W. Toledo Place, La Habra, CA 90631.
- What is Simon Baek's phone number?
- The practice phone number listed in the NPPES registry for Simon Baek is (562) 690-5502.
- Does Simon Baek accept Medicare?
- Simon Baek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Simon Baek's NPI active?
- Yes — Simon Baek's NPI (1821316209) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.