Jose Rivera Santiago, M.D.
NPI 1811163843 · Internal Medicine Physician · Mayaguez, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jose Rivera Santiago, M.D. is a Internal Medicine Physician provider in Mayaguez, PR (NPI 1811163843).
Provider details
- NPI number
- 1811163843
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 11060 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
80 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 44 | $89 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 36 | $125 |
Typical Medicare-allowed amounts for these services range $89–$125 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 162 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 1,292 | 199 |
| Simvastatin | 1,242 | 199 |
| Gabapentin | 851 | 153 |
| Levothyroxine Sodium | 827 | 133 |
| Atorvastatin Calcium | 792 | 129 |
| Glimepiride | 769 | 114 |
| Metformin Hcl | 691 | 103 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-30
- Last updated
- 2016-08-22
Frequently asked questions
- What is Jose Rivera Santiago's NPI number?
- Jose Rivera Santiago's National Provider Identifier (NPI) is 1811163843, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jose Rivera Santiago's specialty?
- Jose Rivera Santiago is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jose Rivera Santiago located?
- Jose Rivera Santiago's practice location on file with NPPES is Cpr Building, Mayaguez, PR 00680.
- What is Jose Rivera Santiago's phone number?
- The practice phone number listed in the NPPES registry for Jose Rivera Santiago is (787) 832-4545.
- Does Jose Rivera Santiago accept Medicare?
- Jose Rivera Santiago is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jose Rivera Santiago's NPI active?
- Yes — Jose Rivera Santiago's NPI (1811163843) is active in the NPPES registry as of the last update on 2016-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.