Mamie Annexy Lopez, MD
NPI 1497894505 · Gastroenterology Physician · Manati, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mamie Annexy Lopez, MD is a Gastroenterology Physician provider in Manati, PR (NPI 1497894505).
Provider details
- NPI number
- 1497894505
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 9979 (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
52 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 | 52 | $88 |
Typical Medicare-allowed amounts for these services range $88–$88 (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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 237 | 105 |
| Famotidine | 190 | 77 |
| Esomeprazole Magnesium | 100 | 38 |
| Midazolam Hcl/Pfbrand: Midazolam Hcl | 84 | 76 |
| Meperidine Hcl/Pfbrand: Meperidine Hcl | 77 | 70 |
| Omeprazole | 76 | 33 |
| Linaclotidebrand: Linzess | 75 | 33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-05
- Last updated
- 2018-01-25
Frequently asked questions
- What is Mamie Annexy Lopez's NPI number?
- Mamie Annexy Lopez's National Provider Identifier (NPI) is 1497894505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mamie Annexy Lopez's specialty?
- Mamie Annexy Lopez is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mamie Annexy Lopez located?
- Mamie Annexy Lopez's practice location on file with NPPES is A4 Calle Marginal, Manati, PR 00674-4903.
- What is Mamie Annexy Lopez's phone number?
- The practice phone number listed in the NPPES registry for Mamie Annexy Lopez is (787) 884-5368.
- Does Mamie Annexy Lopez accept Medicare?
- Mamie Annexy Lopez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mamie Annexy Lopez's NPI active?
- Yes — Mamie Annexy Lopez's NPI (1497894505) is active in the NPPES registry as of the last update on 2018-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.