IndividualActive
Louis Pelfini, MD
NPI 1871710871 · Internal Medicine Physician · Petaluma, CA
Louis Pelfini, MD is a Internal Medicine Physician provider in Petaluma, CA (NPI 1871710871).
Provider details
- NPI number
- 1871710871
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A22628 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 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
161 Lynch Creek Way
Petaluma, CA 94954-2343
Phone: (707) 766-1580
Fax: (707) 763-0803
Street-level locationGet directions
Mailing address
161 Lynch Creek Way
Petaluma, CA 94954-2343
Registry dates
- Enumerated
- 2007-04-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Louis Pelfini's NPI number?
- Louis Pelfini's National Provider Identifier (NPI) is 1871710871, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Pelfini's specialty?
- Louis Pelfini is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Pelfini located?
- Louis Pelfini's practice location on file with NPPES is 161 Lynch Creek Way, Petaluma, CA 94954-2343.
- What is Louis Pelfini's phone number?
- The practice phone number listed in the NPPES registry for Louis Pelfini is (707) 766-1580.
- Is Louis Pelfini's NPI active?
- Yes — Louis Pelfini's NPI (1871710871) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.