Doctor profile · Federal record
Dr. Barnett Grier, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Family Medicine Physician · Los Angeles, CA
- NPI 1932233665
- Accepts Medicare
- 58 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
231 W Vernon Ave Ste 201
Los Angeles, CA 900372779
(323) 828-7929 - Additional location
-
14718 Hawthorne Blvd
Lawndale, CA 902601523
fax (310) 564-7760 - Additional location
-
480 1St Ave
Portola, CA 961229405
(530) 832-6600
fax (530) 832-5968 - Mailing address
-
1214 Idaho Ave, #5
Santa Monica, CA 904033054
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- July 10, 2022
- Year of graduation
- 1968 — 58 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A23617
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1932233665. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
634
Distinct HCPCS
4
Medicare allowed
$85,750
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99350 |
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | 367 | 209 | $188 | |
94618 |
Test for exercise-induced lung stress | 174 | 152 | $35 | |
99344 |
Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes | 65 | 65 | $145 | |
99347 |
Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes | 28 | 23 | $45 |
In context: peer comparison
Among 262 peers in Los Angeles Internal Medicine Physician, average services per provider: 160. This provider delivers 4.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,553
Patients
572
Total drug cost
$51,160
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 341 | 81 | $5,733 |
| Losartan Potassium | Generic | 254 | 71 | $5,195 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 249 | 38 | $7,050 |
| Lisinopril | Generic | 231 | 52 | $2,438 |
| Amlodipine Besylate | Generic | 223 | 53 | $2,274 |
| Omeprazole | Generic | 183 | 39 | $2,792 |
| Gabapentin | Generic | 173 | 31 | $4,817 |
| Levothyroxine Sodium | Generic | 167 | 37 | $3,522 |
| Tamsulosin Hcl | Generic | 139 | 34 | $3,403 |
| Ventolin Hfa (Albuterol Sulfate) | Brand | 119 | 24 | $8,744 |
Frequently asked questions
What is Dr. Barnett Grier's medical specialty?
Dr. Barnett Grier practices Internal Medicine Physician in Los Angeles, CA.
Where does Dr. Barnett Grier practice?
Dr. Barnett Grier practices at 231 W Vernon Ave Ste 201, Los Angeles, CA 900372779. Office phone: 3238287929.
What is Dr. Barnett Grier's NPI?
Dr. Barnett Grier's National Provider Identifier (NPI) is 1932233665, issued by NPPES.
Does Dr. Barnett Grier accept Medicare assignment?
Yes. Dr. Barnett Grier accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Barnett Grier commonly perform?
Top Medicare-reported procedures in 2023: Residence visit for established patient with high level of medical decision making (HCPCS 99350); Test for exercise-induced lung stress (HCPCS 94618); Residence visit for new patient with moderate level of medical decision making (HCPCS 99344). Source: CMS Medicare Physician & Other Practitioners file.