William Marquez-Mulero, MD
NPI 1477539815 · Family Medicine Physician · Humacao, PR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Marquez-Mulero, MD is a Family Medicine Physician provider in Humacao, PR (NPI 1477539815).
Provider details
- NPI number
- 1477539815
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5784 (PR)
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
20 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 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 406 | 117 |
| Gabapentin | 235 | 61 |
| Lisinopril | 231 | 55 |
| Famotidine | 212 | 47 |
| Metformin Hcl | 185 | 50 |
| Amlodipine Besylate | 178 | 53 |
| Levothyroxine Sodium | 163 |
Mailing address
Registry dates
- Enumerated
- 2005-12-19
- Last updated
- 2023-03-07
Frequently asked questions
- What is William Marquez-Mulero's NPI number?
- William Marquez-Mulero's National Provider Identifier (NPI) is 1477539815, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Marquez-Mulero's specialty?
- William Marquez-Mulero is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Marquez-Mulero located?
- William Marquez-Mulero's practice location on file with NPPES is Calle Carreras #13, Humacao, PR 00791.
- What is William Marquez-Mulero's phone number?
- The practice phone number listed in the NPPES registry for William Marquez-Mulero is (787) 390-7973.
- Does William Marquez-Mulero accept Medicare?
- William Marquez-Mulero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Marquez-Mulero's NPI active?
- Yes — William Marquez-Mulero's NPI (1477539815) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.