Doctor profile · Federal record
Dr. Jonathan Warnelo, D.O.
Internal Medicine Physician (CMS: Internal Medicine) · Hospitalist Physician · Garden Grove, CA
- NPI 1467980854
- Accepts Medicare
- 10 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
12665 Garden Grove Blvd, #502
Garden Grove, CA 928431904
(714) 537-7800
fax (714) 537-7633 - Mailing address
-
P.O. Box 2989
Seal Beach, CA 907401989
Credentials & registration
- NPI registered
- May 2017 — 9 yrs on file
- Profile last updated
- September 20, 2019
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #20A16595
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1467980854. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,926
Distinct HCPCS
4
Medicare allowed
$201,858
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 1,077 | 116 | $83 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 730 | 77 | $125 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 106 | 96 | $182 | |
99239 |
Hospital discharge day management, more than 30 minutes | 13 | 13 | $121 |
In context: peer comparison
Among 16 peers in Garden Grove Internal Medicine Physician, average services per provider: 257. This provider delivers 7.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
158
Patients
39
Total drug cost
$3,572
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 27 | 13 | $1,499 |
| Olanzapine | Generic | 25 | 0 | $983 |
| Atorvastatin Calcium | Generic | 21 | 0 | $252 |
| Amlodipine Besylate | Generic | 19 | 0 | $169 |
| Metoprolol Tartrate | Generic | 14 | 14 | $72 |
| Buspirone Hcl | Generic | 13 | 0 | $211 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 13 | 0 | $137 |
| Escitalopram Oxalate | Generic | 13 | 0 | $174 |
| Levofloxacin | Generic | 13 | 12 | $74 |
Hospital affiliations
Frequently asked questions
What is Dr. Jonathan Warnelo's medical specialty?
Dr. Jonathan Warnelo practices Internal Medicine Physician in Garden Grove, CA.
Where does Dr. Jonathan Warnelo practice?
Dr. Jonathan Warnelo practices at 12665 Garden Grove Blvd, Garden Grove, CA 928431904. Office phone: 7145377800.
What is Dr. Jonathan Warnelo's NPI?
Dr. Jonathan Warnelo's National Provider Identifier (NPI) is 1467980854, issued by NPPES.
Does Dr. Jonathan Warnelo accept Medicare assignment?
Yes. Dr. Jonathan Warnelo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jonathan Warnelo commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.