Melissa Osorio, DO
NPI 1841828423 · Hospitalist Physician · La Jolla, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Osorio, DO is a Hospitalist Physician provider in La Jolla, CA (NPI 1841828423).
Provider details
- NPI number
- 1841828423
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
271 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 131 | $80 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 90 | $132 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 28 | $118 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $94 |
Typical Medicare-allowed amounts for these services range $80–$132 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 42 | 34 |
| Lisinopril | 23 | 19 |
| Levothyroxine Sodium | 22 | 19 |
| Losartan Potassium | 21 | 18 |
| Amlodipine Besylate | 17 | 13 |
| Pantoprazole Sodium | 16 | 14 |
| Meloxicam | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-30
- Last updated
- 2023-06-15
- Certified
- 2023-06-15
Frequently asked questions
- What is Melissa Osorio's NPI number?
- Melissa Osorio's National Provider Identifier (NPI) is 1841828423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Osorio's specialty?
- Melissa Osorio is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Melissa Osorio located?
- Melissa Osorio's practice location on file with NPPES is 10666 N Torrey Pines Rd, La Jolla, CA 92037-1027.
- What is Melissa Osorio's phone number?
- The practice phone number listed in the NPPES registry for Melissa Osorio is (858) 554-7909.
- Does Melissa Osorio accept Medicare?
- Melissa Osorio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Osorio's NPI active?
- Yes — Melissa Osorio's NPI (1841828423) is active in the NPPES registry as of the last update on 2023-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.