Doctor profile · Federal record
Dr. Lewis Gamarra, M.D.
Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Hospitalist Physician · Emeryville, CA
- NPI 1124048608
- Accepts Medicare
- MIPS 78.4 / 100 · 2023
- 38 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2100 Powell St Ste 400
Emeryville, CA 946081872
(510) 851-7501
fax (510) 851-7446 - Additional location
-
2115 10Th St, Ste A2
Los Osos, CA 934023244
(805) 534-9360
fax (805) 534-9345
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- January 11, 2023
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State licenses (2)
- California #G70417 · California #70417
- Medicaid
- CA #00G704170
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1124048608. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,037
Distinct HCPCS
10
Medicare allowed
$301,488
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 1,018 | 279 | $134 | |
17003 |
Destruction of precancer skin growth, 2-14 growths | 449 | 56 | $7 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 262 | 127 | $95 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 249 | 143 | $122 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 147 | 89 | $187 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 115 | 81 | $81 | |
90686 |
Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage | 89 | 88 | $22 | |
G0008 |
Administration of influenza virus vaccine | 89 | 88 | $32 | |
17000 |
Destruction of precancer skin growth, 1 growth | 88 | 67 | $72 | |
82962 |
Blood glucose (sugar) test performed by hand-held instrument | 65 | 28 | $3 |
In context: peer comparison
Among 7 peers in this city , average services per provider: 165. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$86
Transactions
3
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Eisai Inc. | 1 | $33.03 | |
| Novo Nordisk Inc | 1 | $32.34 | |
| Janssen Pharmaceuticals, Inc | 1 | $20.52 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,165
Patients
563
Total drug cost
$37,716
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 302 | 70 | $3,418 |
| Atorvastatin Calcium | Generic | 241 | 77 | $4,057 |
| Losartan Potassium | Generic | 205 | 50 | $2,979 |
| Hydrochlorothiazide | Generic | 199 | 42 | $982 |
| Metoprolol Succinate | Generic | 188 | 45 | $3,740 |
| Pantoprazole Sodium | Generic | 156 | 48 | $4,242 |
| Levothyroxine Sodium | Generic | 132 | 36 | $2,350 |
| Finasteride | Generic | 104 | 27 | $1,784 |
| Duloxetine Hcl | Generic | 99 | 17 | $2,664 |
| Gabapentin | Generic | 99 | 22 | $2,055 |
Frequently asked questions
What is Dr. Lewis Gamarra's medical specialty?
Dr. Lewis Gamarra practices Hospitalist Physician in Emeryville, CA.
Where does Dr. Lewis Gamarra practice?
Dr. Lewis Gamarra practices at 2100 Powell St Ste 400, Emeryville, CA 946081872. Office phone: 5108517501.
What is Dr. Lewis Gamarra's NPI?
Dr. Lewis Gamarra's National Provider Identifier (NPI) is 1124048608, issued by NPPES.
Does Dr. Lewis Gamarra accept Medicare assignment?
Yes. Dr. Lewis Gamarra accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lewis Gamarra commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.