William Weissman, MD
NPI 1730114992 · Internal Medicine Physician · Vista, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Weissman, MD is a Internal Medicine Physician provider in Vista, CA (NPI 1730114992).
Provider details
- NPI number
- 1730114992
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G15046 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2010-07-28
Frequently asked questions
- What is William Weissman's NPI number?
- William Weissman's National Provider Identifier (NPI) is 1730114992, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Weissman's specialty?
- William Weissman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Weissman located?
- William Weissman's practice location on file with NPPES is 1000 Vale Terrace Dr, Vista, CA 92084-5218.
- What is William Weissman's phone number?
- The practice phone number listed in the NPPES registry for William Weissman is (760) 631-5000.
- Does William Weissman accept Medicare?
- William Weissman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Weissman's NPI active?
- Yes — William Weissman's NPI (1730114992) is active in the NPPES registry as of the last update on 2010-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.