Gonzalo Castaneda, MD
NPI 1376040709 · Adult Medicine Physician · Bellflower, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gonzalo Castaneda, MD is a Adult Medicine Physician provider in Bellflower, CA (NPI 1376040709).
Provider details
- NPI number
- 1376040709
- Entity type
- Individual
- Primary specialty
- Adult Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A173551 (CA)
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
8 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
199 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 107 | $139 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 42 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 25 | $99 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 25 | $68 |
Typical Medicare-allowed amounts for these services range $9–$139 (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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 115 | 50 |
| Metformin Hcl | 65 | 28 |
| Losartan Potassium | 50 | 18 |
| Amlodipine Besylate | 49 | 23 |
| Fluticasone Propionate | 36 | 12 |
| Omeprazole | 34 | 15 |
| Lisinopril | 34 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$117 across 1 record (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
- 2018-04-11
- Last updated
- 2024-01-26
- Certified
- 2022-05-24
Frequently asked questions
- What is Gonzalo Castaneda's NPI number?
- Gonzalo Castaneda's National Provider Identifier (NPI) is 1376040709, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gonzalo Castaneda's specialty?
- Gonzalo Castaneda is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gonzalo Castaneda located?
- Gonzalo Castaneda's practice location on file with NPPES is 10005 Flower St, Bellflower, CA 90706-5473.
- What is Gonzalo Castaneda's phone number?
- The practice phone number listed in the NPPES registry for Gonzalo Castaneda is (562) 804-8112.
- Does Gonzalo Castaneda accept Medicare?
- Gonzalo Castaneda is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gonzalo Castaneda's NPI active?
- Yes — Gonzalo Castaneda's NPI (1376040709) is active in the NPPES registry as of the last update on 2024-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.