Ramon Marrero, MD
NPI 1336252907 · Gastroenterology Physician · Bayamon, PR
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ramon Marrero, MD is a Gastroenterology Physician provider in Bayamon, PR (NPI 1336252907).
Provider details
- NPI number
- 1336252907
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 8427 (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
19 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
79 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 | 62 | $89 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 17 | $56 |
Typical Medicare-allowed amounts for these services range $56–$89 (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 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 599 | 228 |
| Pantoprazole Sodium | 360 | 136 |
| Sucralfate | 263 | 102 |
| Omeprazole | 157 | 65 |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab | 103 | 103 |
| Sodium, Potassium,mag Sulfatesbrand: Suprep | 101 | 101 |
| Midazolam Hcl | 81 | 80 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ramon Marrero's NPI number?
- Ramon Marrero's National Provider Identifier (NPI) is 1336252907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ramon Marrero's specialty?
- Ramon Marrero is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ramon Marrero located?
- Ramon Marrero's practice location on file with NPPES is Galeria Medica,sta.cruz 64, Bayamon, PR 00959.
- What is Ramon Marrero's phone number?
- The practice phone number listed in the NPPES registry for Ramon Marrero is (787) 785-8560.
- Does Ramon Marrero accept Medicare?
- Ramon Marrero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ramon Marrero's NPI active?
- Yes — Ramon Marrero's NPI (1336252907) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.