Marcos Parrilla Rios, MD
NPI 1336125301 · Specialist · San Lorenzo, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcos Parrilla Rios, MD is a Specialist provider in San Lorenzo, PR (NPI 1336125301).
Provider details
- NPI number
- 1336125301
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 12258 (PR)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
79 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 49 | $64 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 30 | $35 |
Typical Medicare-allowed amounts for these services range $35–$64 (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 · 208 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodiumbrand: Synthroid | 1,092 | 258 |
| Losartan Potassium | 871 | 251 |
| Famotidine | 847 | 259 |
| Simvastatin | 787 | 211 |
| Gabapentin | 697 | 197 |
| Rosuvastatin Calcium | 649 | 184 |
| Amlodipine Besylate | 516 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$464 across 13 records (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
- 2005-12-21
- Last updated
- 2023-03-07
Frequently asked questions
- What is Marcos Parrilla Rios's NPI number?
- Marcos Parrilla Rios's National Provider Identifier (NPI) is 1336125301, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcos Parrilla Rios's specialty?
- Marcos Parrilla Rios is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Marcos Parrilla Rios located?
- Marcos Parrilla Rios's practice location on file with NPPES is Calle Jose Tous Soto 108, San Lorenzo, PR 00754.
- What is Marcos Parrilla Rios's phone number?
- The practice phone number listed in the NPPES registry for Marcos Parrilla Rios is (787) 736-0252.
- Does Marcos Parrilla Rios accept Medicare?
- Marcos Parrilla Rios is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcos Parrilla Rios's NPI active?
- Yes — Marcos Parrilla Rios's NPI (1336125301) 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.