Seif Sleiman, M.D.
NPI 1255564852 · Internal Medicine Physician · Woodland Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Seif Sleiman, M.D. is a Internal Medicine Physician provider in Woodland Hills, CA (NPI 1255564852).
Provider details
- NPI number
- 1255564852
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A118775 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
60 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 | 49 | $81 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 11 | $84 |
Typical Medicare-allowed amounts for these services range $81–$84 (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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 87 | 50 |
| Furosemide | 67 | 38 |
| Apixabanbrand: Eliquis | 42 | — |
| Carvedilol | 38 | 18 |
| Lisinopril | 37 | 19 |
| Atorvastatin Calcium | 33 | 17 |
| Dabigatran Etexilate Mesylatebrand: Pradaxa | 33 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-08-29
- Last updated
- 2021-10-27
- Certified
- 2021-10-27
Frequently asked questions
- What is Seif Sleiman's NPI number?
- Seif Sleiman's National Provider Identifier (NPI) is 1255564852, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Seif Sleiman's specialty?
- Seif Sleiman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Seif Sleiman located?
- Seif Sleiman's practice location on file with NPPES is 5601 De Soto Ave, Woodland Hills, CA 91367-6701.
- What is Seif Sleiman's phone number?
- The practice phone number listed in the NPPES registry for Seif Sleiman is (626) 405-3697.
- Does Seif Sleiman accept Medicare?
- Seif Sleiman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Seif Sleiman's NPI active?
- Yes — Seif Sleiman's NPI (1255564852) is active in the NPPES registry as of the last update on 2021-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.