Nicolas Melgarejo, M.D.
NPI 1386882520 · Infectious Disease Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicolas Melgarejo, M.D. is a Infectious Disease Physician provider in San Antonio, TX (NPI 1386882520).
Provider details
- NPI number
- 1386882520
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- N1763 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
593 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 163 | $165 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 124 | $75 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 104 | $124 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 93 | $113 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 81 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 74 | — |
| Doxycycline Monohydrate | 56 | 14 |
| Amoxicillin | 49 | — |
| Doxycycline Hyclate | 29 | — |
| Darunavir/Cobicistatbrand: Prezcobix | 21 | — |
| Dolutegravir Sodiumbrand: Tivicay | 21 | — |
| Ritonavir | 18 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$676 across 30 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
- 2009-01-26
- Last updated
- 2011-06-28
Frequently asked questions
- What is Nicolas Melgarejo's NPI number?
- Nicolas Melgarejo's National Provider Identifier (NPI) is 1386882520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicolas Melgarejo's specialty?
- Nicolas Melgarejo is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Nicolas Melgarejo located?
- Nicolas Melgarejo's practice location on file with NPPES is 343 W. Houston St., San Antonio, TX 78205.
- What is Nicolas Melgarejo's phone number?
- The practice phone number listed in the NPPES registry for Nicolas Melgarejo is (210) 224-9616.
- Does Nicolas Melgarejo accept Medicare?
- Nicolas Melgarejo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicolas Melgarejo's NPI active?
- Yes — Nicolas Melgarejo's NPI (1386882520) is active in the NPPES registry as of the last update on 2011-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.