Reynaldo Castillo, M.D
NPI 1376665729 · General Practice Physician · Huntington Park, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Reynaldo Castillo, M.D is a General Practice Physician provider in Huntington Park, CA (NPI 1376665729).
Provider details
- NPI number
- 1376665729
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- A39948 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 164 | 50 |
| Metformin Hcl | 124 | 40 |
| Famotidine | 93 | 28 |
| Benazepril Hcl | 65 | 19 |
| Losartan Potassium | 61 | 15 |
| Levothyroxine Sodium | 59 | 18 |
| Amlodipine Besylate | 47 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$167 across 8 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
- 2007-04-05
- Last updated
- 2015-12-01
Frequently asked questions
- What is Reynaldo Castillo's NPI number?
- Reynaldo Castillo's National Provider Identifier (NPI) is 1376665729, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Reynaldo Castillo's specialty?
- Reynaldo Castillo is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Reynaldo Castillo located?
- Reynaldo Castillo's practice location on file with NPPES is 2675 E Slauson Ave, Huntington Park, CA 90255-2926.
- What is Reynaldo Castillo's phone number?
- The practice phone number listed in the NPPES registry for Reynaldo Castillo is (323) 589-6681.
- Does Reynaldo Castillo accept Medicare?
- Reynaldo Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Reynaldo Castillo's NPI active?
- Yes — Reynaldo Castillo's NPI (1376665729) is active in the NPPES registry as of the last update on 2015-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.