Preston Sitorus, MD
NPI 1194305847 · Student in an Organized Health Care Education/Training Program · Sylmar, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Preston Sitorus, MD is a Student in an Organized Health Care Education/Training Program provider in Sylmar, CA (NPI 1194305847).
Provider details
- NPI number
- 1194305847
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 31 | 14 |
| Atorvastatin Calcium | 24 | 12 |
| Gabapentin | 16 | — |
| Metformin Hcl | 15 | — |
| Amlodipine Besylate | 14 | — |
| Rivaroxabanbrand: Xarelto | 14 | — |
| Albuterol Sulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-04-08
- Last updated
- 2021-04-08
- Certified
- 2021-04-08
Frequently asked questions
- What is Preston Sitorus's NPI number?
- Preston Sitorus's National Provider Identifier (NPI) is 1194305847, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Preston Sitorus's specialty?
- Preston Sitorus is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Preston Sitorus located?
- Preston Sitorus's practice location on file with NPPES is 14445 Olive View Dr, Sylmar, CA 91342-1437.
- What is Preston Sitorus's phone number?
- The practice phone number listed in the NPPES registry for Preston Sitorus is (747) 210-3000.
- Does Preston Sitorus accept Medicare?
- Preston Sitorus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Preston Sitorus's NPI active?
- Yes — Preston Sitorus's NPI (1194305847) is active in the NPPES registry as of the last update on 2021-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.