Pedro Ontiveros Jr., MD
NPI 1851450449 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Pedro Ontiveros Jr., MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1851450449).
Provider details
- NPI number
- 1851450449
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A83544 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 134 | 51 |
| Mirtazapine | 56 | 36 |
| Lactulose | 52 | 31 |
| Fentanyl | 32 | — |
| Oxycodone Hcl | 32 | — |
| Tramadol Hcl | 30 | — |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-08
- Last updated
- 2021-12-02
Frequently asked questions
- What is Pedro Ontiveros Jr.'s NPI number?
- Pedro Ontiveros Jr.'s National Provider Identifier (NPI) is 1851450449, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Pedro Ontiveros Jr.'s specialty?
- Pedro Ontiveros Jr. is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Pedro Ontiveros Jr. located?
- Pedro Ontiveros Jr.'s practice location on file with NPPES is 6041 Cadillac Ave, Los Angeles, CA 90034-1702.
- What is Pedro Ontiveros Jr.'s phone number?
- The practice phone number listed in the NPPES registry for Pedro Ontiveros Jr. is (323) 857-2000.
- Does Pedro Ontiveros Jr. accept Medicare?
- Pedro Ontiveros Jr. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Pedro Ontiveros Jr.'s NPI active?
- Yes — Pedro Ontiveros Jr.'s NPI (1851450449) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.