Guido Pelaez, MD
NPI 1427792316 · 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)
Guido Pelaez, MD is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1427792316).
Provider details
- NPI number
- 1427792316
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 43 | 17 |
| Amlodipine Besylate | 39 | 20 |
| Atorvastatin Calcium | 37 | 15 |
| Losartan Potassium | 28 | — |
| Carvedilol | 26 | — |
| Semaglutidebrand: Ozempic | 23 | — |
| Hydrochlorothiazide | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-04-26
- Last updated
- 2022-06-18
- Certified
- 2022-06-18
Frequently asked questions
- What is Guido Pelaez's NPI number?
- Guido Pelaez's National Provider Identifier (NPI) is 1427792316, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guido Pelaez's specialty?
- Guido Pelaez is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Guido Pelaez located?
- Guido Pelaez's practice location on file with NPPES is 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003.
- What is Guido Pelaez's phone number?
- The practice phone number listed in the NPPES registry for Guido Pelaez is (314) 362-8065.
- Does Guido Pelaez accept Medicare?
- Guido Pelaez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guido Pelaez's NPI active?
- Yes — Guido Pelaez's NPI (1427792316) is active in the NPPES registry as of the last update on 2022-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.