Leif Hass, M.D.
NPI 1528175346 · Hospitalist Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leif Hass, M.D. is a Hospitalist Physician provider in Oakland, CA (NPI 1528175346).
Provider details
- NPI number
- 1528175346
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G80367 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
10 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
819 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 538 | $88 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 198 | $130 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 47 | $193 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 21 | $132 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 15 | $93 |
Typical Medicare-allowed amounts for these services range $88–$193 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 21 | 18 |
| Amlodipine Besylate | 21 | 18 |
| Pantoprazole Sodium | 17 | 15 |
| Apixabanbrand: Eliquis | 16 | 13 |
| Atorvastatin Calcium | 14 | 12 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 14 | 14 |
Practice location
Mailing address
Additional practice locations (9)
- 500 San Pablo AveAlbany, CA 94706-1103Phone: (510) 204-8130Fax: (510) 506-7726
- 4053 Lone Tree Way Ste 101Antioch, CA 94531-6210Phone: (925) 756-3400Fax: (510) 506-7728
- 2500 Milvia StBerkeley, CA 94704-2636Phone: (510) 204-5600Fax: (510) 204-5462
- 2850 Telegraph Ave Ste 130Berkeley, CA 94705-1159Phone: (510) 204-8110Fax: (510) 506-7721
- 350 John Muir Pkwy Ste 105Brentwood, CA 94513-5183Phone: (925) 776-7725Fax: (510) 506-7727
- 20101 Lake Chabot Rd Fl 3Castro Valley, CA 94546-5305Phone: (510) 886-3400Fax: (510) 506-7729
- 350 30th St Ste 100Oakland, CA 94609-3422Phone: (510) 204-8290Fax: (510) 506-7725
- 12 Camino EncinasOrinda, CA 94563-3304
Registry dates
- Enumerated
- 2006-08-25
- Last updated
- 2019-04-11
Frequently asked questions
- What is Leif Hass's NPI number?
- Leif Hass's National Provider Identifier (NPI) is 1528175346, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leif Hass's specialty?
- Leif Hass is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Leif Hass located?
- Leif Hass's practice location on file with NPPES is 350 Hawthorne Ave Rm 2346, Oakland, CA 94609-3108.
- What is Leif Hass's phone number?
- The practice phone number listed in the NPPES registry for Leif Hass is (510) 869-6883.
- Does Leif Hass accept Medicare?
- Leif Hass is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leif Hass's NPI active?
- Yes — Leif Hass's NPI (1528175346) is active in the NPPES registry as of the last update on 2019-04-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.