William Go, M.D.
NPI 1992972715 · Gastroenterology Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Go, M.D. is a Gastroenterology Physician provider in Lancaster, CA (NPI 1992972715).
Provider details
- NPI number
- 1992972715
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A62008 (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
18 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 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 210 | 79 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 162 | 154 |
| Famotidine | 117 | 29 |
| Pantoprazole Sodium | 86 | 20 |
| Sucralfate | 56 | 25 |
| Lactulose | 55 | 25 |
| Mesalamine | 48 | 17 |
| Lubiprostone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-12
- Last updated
- 2021-11-22
Frequently asked questions
- What is William Go's NPI number?
- William Go's National Provider Identifier (NPI) is 1992972715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Go's specialty?
- William Go is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is William Go located?
- William Go's practice location on file with NPPES is 43112 15th St W, Lancaster, CA 93534-6219.
- What is William Go's phone number?
- The practice phone number listed in the NPPES registry for William Go is (661) 726-2226.
- Does William Go accept Medicare?
- William Go is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Go's NPI active?
- Yes — William Go's NPI (1992972715) is active in the NPPES registry as of the last update on 2021-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.