Lyle Shlager, MD
NPI 1558449140 · Gastroenterology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lyle Shlager, MD is a Gastroenterology Physician provider in San Francisco, CA (NPI 1558449140).
Provider details
- NPI number
- 1558449140
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G52274 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 74 | 29 |
| Mesalamine | 69 | 19 |
| Pantoprazole Sodium | 36 | — |
| Famotidine | 36 | 11 |
| Esomeprazole Magnesium | 24 | — |
| Prednisone | 22 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 21 | 21 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is Lyle Shlager's NPI number?
- Lyle Shlager's National Provider Identifier (NPI) is 1558449140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lyle Shlager's specialty?
- Lyle Shlager is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Lyle Shlager located?
- Lyle Shlager's practice location on file with NPPES is 2200 Ofarrell St, San Francisco, CA 94115-3357.
- What is Lyle Shlager's phone number?
- The practice phone number listed in the NPPES registry for Lyle Shlager is (415) 833-2000.
- Does Lyle Shlager accept Medicare?
- Lyle Shlager is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lyle Shlager's NPI active?
- Yes — Lyle Shlager's NPI (1558449140) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.