Nicholas Trottier, MD, MPH
NPI 1558859199 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Trottier, MD, MPH is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1558859199).
Provider details
- NPI number
- 1558859199
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- No
- License
- 2019029014 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 43 | 15 |
| Amlodipine Besylate | 19 | — |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide | 15 | — |
| Furosemide | 11 | — |
| Mometasone/Formoterolbrand: Dulera | 11 | — |
| Metoprolol Tartrate | 11 | — |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-30
- Last updated
- 2023-06-14
- Certified
- 2023-06-14
Frequently asked questions
- What is Nicholas Trottier's NPI number?
- Nicholas Trottier's National Provider Identifier (NPI) is 1558859199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Trottier's specialty?
- Nicholas Trottier is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Trottier located?
- Nicholas Trottier's practice location on file with NPPES is 621 S New Ballas Rd, Saint Louis, MO 63141-8232.
- What is Nicholas Trottier's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Trottier is (314) 251-6000.
- Does Nicholas Trottier accept Medicare?
- Nicholas Trottier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Trottier's NPI active?
- Yes — Nicholas Trottier's NPI (1558859199) is active in the NPPES registry as of the last update on 2023-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.