Francisco Nieves-Santiago, M.D.
NPI 1407827066 · Family Medicine Physician · Guayanilla, PR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Francisco Nieves-Santiago, M.D. is a Family Medicine Physician provider in Guayanilla, PR (NPI 1407827066).
Provider details
- NPI number
- 1407827066
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 11820 (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 · 133 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 646 | 154 |
| Gabapentin | 588 | 129 |
| Levothyroxine Sodiumbrand: Synthroid | 457 | 77 |
| Famotidine | 435 | 102 |
| Metformin Hcl | 355 | 67 |
| Simvastatin | 350 | 74 |
| Lisinopril | 323 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-31
- Last updated
- 2015-02-12
Frequently asked questions
- What is Francisco Nieves-Santiago's NPI number?
- Francisco Nieves-Santiago's National Provider Identifier (NPI) is 1407827066, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Francisco Nieves-Santiago's specialty?
- Francisco Nieves-Santiago is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Francisco Nieves-Santiago located?
- Francisco Nieves-Santiago's practice location on file with NPPES is C1 Calle Santoni, Guayanilla, PR 00656-1607.
- What is Francisco Nieves-Santiago's phone number?
- The practice phone number listed in the NPPES registry for Francisco Nieves-Santiago is (787) 835-3705.
- Does Francisco Nieves-Santiago accept Medicare?
- Francisco Nieves-Santiago is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Francisco Nieves-Santiago's NPI active?
- Yes — Francisco Nieves-Santiago's NPI (1407827066) is active in the NPPES registry as of the last update on 2015-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.