IndividualActive
Louis Watson, MD
NPI 1730280827 · Surgery Physician · Upland, CA
Louis Watson, MD is a Surgery Physician provider in Upland, CA (NPI 1730280827).
Provider details
- NPI number
- 1730280827
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G32156 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
99 N San Antonio Ave
#140
Upland, CA 91786-4575
Phone: (909) 931-1800
Fax: (909) 931-1855
Street-level locationGet directions
Mailing address
2058 N Mills Ave
Claremont, CA 91711
Registry dates
- Enumerated
- 2006-09-25
- Last updated
- 2011-06-29
Frequently asked questions
- What is Louis Watson's NPI number?
- Louis Watson's National Provider Identifier (NPI) is 1730280827, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Watson's specialty?
- Louis Watson is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Watson located?
- Louis Watson's practice location on file with NPPES is 99 N San Antonio Ave, Upland, CA 91786-4575.
- What is Louis Watson's phone number?
- The practice phone number listed in the NPPES registry for Louis Watson is (909) 931-1800.
- Is Louis Watson's NPI active?
- Yes — Louis Watson's NPI (1730280827) is active in the NPPES registry as of the last update on 2011-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.