Jonathan Warnelo, D.O.
NPI 1467980854 · Internal Medicine Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Warnelo, D.O. is a Internal Medicine Physician provider in Garden Grove, CA (NPI 1467980854).
Provider details
- NPI number
- 1467980854
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A16595 (CA)
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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,300 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 | 1,174 | $81 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 98 | $179 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 28 | $122 |
Typical Medicare-allowed amounts for these services range $81–$179 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 28 | 14 |
| Pantoprazole Sodium | 23 | 12 |
| Olanzapine | 22 | — |
| Losartan Potassium | 20 | — |
| Levofloxacin | 18 | 17 |
| Carvedilol | 15 | 14 |
| Lidocaine | 15 | — |
| Atorvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-05-30
- Last updated
- 2019-09-20
Frequently asked questions
- What is Jonathan Warnelo's NPI number?
- Jonathan Warnelo's National Provider Identifier (NPI) is 1467980854, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Warnelo's specialty?
- Jonathan Warnelo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Warnelo located?
- Jonathan Warnelo's practice location on file with NPPES is 12665 Garden Grove Blvd, Garden Grove, CA 92843-1904.
- What is Jonathan Warnelo's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Warnelo is (714) 537-7800.
- Does Jonathan Warnelo accept Medicare?
- Jonathan Warnelo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Warnelo's NPI active?
- Yes — Jonathan Warnelo's NPI (1467980854) is active in the NPPES registry as of the last update on 2019-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.