Andres Guillermo, M.D.
NPI 1639379837 · Family Medicine Physician · Lake Charles, LA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andres Guillermo, M.D. is a Family Medicine Physician provider in Lake Charles, LA (NPI 1639379837).
Provider details
- NPI number
- 1639379837
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD.203910 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
10,319 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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 1,412 | $58 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 1,026 | $44 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 948 | $118 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 30 Minutes Provided Personally By Health Care Professional, Per Calendar Month99437 | 806 | $56 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 535 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 148 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 351 | 102 |
| Amlodipine Besylate | 338 | 98 |
| Rosuvastatin Calcium | 302 | 85 |
| Levothyroxine Sodium | 284 | 66 |
| Gabapentin | 211 | 56 |
| Pantoprazole Sodium | 198 | 61 |
| Escitalopram Oxalate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,551 across 172 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
- 2007-07-25
- Last updated
- 2022-08-17
- Certified
- 2022-08-17
Frequently asked questions
- What is Andres Guillermo's NPI number?
- Andres Guillermo's National Provider Identifier (NPI) is 1639379837, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andres Guillermo's specialty?
- Andres Guillermo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andres Guillermo located?
- Andres Guillermo's practice location on file with NPPES is 501 Dr Michael Debakey Dr, Lake Charles, LA 70601-5724.
- What is Andres Guillermo's phone number?
- The practice phone number listed in the NPPES registry for Andres Guillermo is (337) 419-1958.
- Does Andres Guillermo accept Medicare?
- Andres Guillermo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andres Guillermo's NPI active?
- Yes — Andres Guillermo's NPI (1639379837) is active in the NPPES registry as of the last update on 2022-08-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.