William Carroll, M.D.
NPI 1922005891 · Internal Medicine Physician · Santa Rosa, CA
William Carroll, M.D. is a Internal Medicine Physician provider in Santa Rosa, CA (NPI 1922005891).
Provider details
- NPI number
- 1922005891
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A39947 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2005-07-06
- Last updated
- 2012-02-07
Frequently asked questions
- What is William Carroll's NPI number?
- William Carroll's National Provider Identifier (NPI) is 1922005891, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Carroll's specialty?
- William Carroll is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Carroll located?
- William Carroll's practice location on file with NPPES is 3536 Mendocino Ave, Santa Rosa, CA 95403-3634.
- What is William Carroll's phone number?
- The practice phone number listed in the NPPES registry for William Carroll is (707) 546-2180.
- Is William Carroll's NPI active?
- Yes — William Carroll's NPI (1922005891) is active in the NPPES registry as of the last update on 2012-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.