Doctor profile · Federal record
Dr. Gregory Warner, M.D.
Critical Care Medicine (Internal Medicine) Physician (CMS: Pulmonary Disease) · Internal Medicine Physician · Pulmonary Disease Physician · Sleep Medicine (Internal Medicine) Physician · Visalia, CA
- NPI 1699810689
- Accepts Medicare
- MIPS 69.5 / 100 · 2023
- 46 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
5400 W Hillsdale Ave
Visalia, CA 932918222
(559) 738-7511
fax (559) 739-2007 - Additional location
-
1303 E Herndon Ave
Fresno, CA 937203309
(559) 450-5672
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- October 23, 2024
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207RC0200X — NUCC code
- State license (1)
- California #G55305
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699810689. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,024
Distinct HCPCS
10
Medicare allowed
$149,174
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 351 | 178 | $209 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 223 | 134 | $127 | |
95811 |
Sleep study in sleep lab with continuous airway pressure (6 years or older) | 70 | 66 | $123 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 63 | 59 | $91 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 62 | 62 | $166 | |
94726 |
Test to determine lung volumes using sensors | 47 | 47 | $12 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 46 | 42 | $116 | |
95810 |
Sleep study in sleep lab (6 years or older) | 43 | 43 | $118 | |
31500 |
Emergent insertion of breathing tube into windpipe using an endoscope | 25 | 25 | $137 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 24 | 18 | $79 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 73. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$1,034
Transactions
33
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | 17 | $709.78 | |
| Mylan Specialty L.P. | 6 | $130.12 | |
| GlaxoSmithKline, LLC. | 4 | $69.45 | |
| Regeneron Healthcare Solutions, Inc. | 2 | $43.38 | |
| MITSUBISHI TANABE PHARMA AMERICA, INC. | 1 | $26.69 | |
| United Therapeutics Corporation | 1 | $21.30 | |
| AstraZeneca Pharmaceuticals LP | 1 | $17.48 | |
| Biogen, Inc. | 1 | $15.59 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
774
Patients
163
Total drug cost
$1,089,019
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 218 | 59 | $221,463 |
| Montelukast Sodium | Generic | 120 | 32 | $1,342 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 82 | 32 | $3,089 |
| Azithromycin | Generic | 64 | 16 | $772 |
| Breo Ellipta (Fluticasone/Vilanterol) | Brand | 64 | 11 | $39,600 |
| Ofev (Nintedanib Esylate) | Brand | 57 | 0 | $767,934 |
| Prednisone | Generic | 35 | 13 | $139 |
| Mycophenolate Mofetil | Generic | 24 | 0 | $1,891 |
| Advair Diskus (Fluticasone Propion/Salmeterol) | Brand | 23 | 0 | $9,545 |
| Combivent Respimat (Ipratropium/Albuterol Sulfate) | Brand | 20 | 0 | $16,384 |
Hospital affiliations
Frequently asked questions
What is Dr. Gregory Warner's medical specialty?
Dr. Gregory Warner practices Critical Care Medicine (Internal Medicine) Physician in Visalia, CA.
Where does Dr. Gregory Warner practice?
Dr. Gregory Warner practices at 5400 W Hillsdale Ave, Visalia, CA 932918222. Office phone: 5597387511.
What is Dr. Gregory Warner's NPI?
Dr. Gregory Warner's National Provider Identifier (NPI) is 1699810689, issued by NPPES.
Does Dr. Gregory Warner accept Medicare assignment?
Yes. Dr. Gregory Warner accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Warner commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Established patient office or other outpatient visit (HCPCS 99214); Sleep study in sleep lab with continuous airway pressure (6 years or older) (HCPCS 95811). Source: CMS Medicare Physician & Other Practitioners file.