Doctor profile · Federal record
Dr. Leif Hass, M.D.
Hospitalist Physician (CMS: Hospitalist) · Family Medicine Physician · Oakland, CA
- NPI 1528175346
- Accepts Medicare
- 33 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 10 locations across 1 states.
- Primary practice
-
350 Hawthorne Ave Rm 2346
Oakland, CA 946093108
(510) 869-6883 - Mailing address
-
2350 W El Camino Real, Fl 2
Mountain View, CA 940406203
California — 9 locations
- Additional location
-
12 Camino Encinas
Orinda, CA 945633304
(510) 204-8180
fax (925) 254-0687 - Additional location
-
12 Camino Encinas Fl 2
Orinda, CA 945633304
(510) 204-8166
fax (510) 506-7724 - Additional location
-
20101 Lake Chabot RD Fl 3
Castro Valley, CA 945465305
(510) 886-3400
fax (510) 506-7729 - Additional location
-
2500 Milvia St
Berkeley, CA 947042636
(510) 204-5600
fax (510) 204-5462 - Additional location
-
2850 Telegraph Ave Ste 130
Berkeley, CA 947051159
(510) 204-8110
fax (510) 506-7721 - Additional location
-
350 30Th St Ste 100
Oakland, CA 946093422
(510) 204-8290
fax (510) 506-7725 - Additional location
-
350 John Muir Pkwy Ste 105
Brentwood, CA 945135183
(925) 776-7725
fax (510) 506-7727 - Additional location
-
4053 Lone Tree Way Ste 101
Antioch, CA 945316210
(925) 756-3400
fax (510) 506-7728 - Additional location
-
500 San Pablo Ave
Albany, CA 947061103
(510) 204-8130
fax (510) 506-7726
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- April 11, 2019
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #G80367
- Medicaid
- CA #00G803670
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528175346. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
745
Distinct HCPCS
5
Medicare allowed
$77,595
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 526 | 195 | $90 | |
99239 |
Hospital discharge day management, more than 30 minutes | 156 | 147 | $132 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 31 | 31 | $197 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 20 | 18 | $135 | |
99238 |
Hospital discharge day management, 30 minutes or less | 12 | 12 | $93 |
In context: peer comparison
Among 28 peers in Oakland Hospitalist Physician, average services per provider: 137. This provider delivers 5.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
62
Patients
13
Total drug cost
$10,984
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 14 | 13 | $166 |
| Pantoprazole Sodium | Generic | 13 | 0 | $387 |
| Amlodipine Besylate | Generic | 12 | 0 | $169 |
| Eliquis (Apixaban) | Brand | 12 | 0 | $10,170 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 11 | 0 | $91 |
Frequently asked questions
What is Dr. Leif Hass's medical specialty?
Dr. Leif Hass practices Hospitalist Physician in Oakland, CA.
Where does Dr. Leif Hass practice?
Dr. Leif Hass practices at 350 Hawthorne Ave Rm 2346, Oakland, CA 946093108. Office phone: 5108696883.
What is Dr. Leif Hass's NPI?
Dr. Leif Hass's National Provider Identifier (NPI) is 1528175346, issued by NPPES.
Does Dr. Leif Hass accept Medicare assignment?
Yes. Dr. Leif Hass accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Leif Hass commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.