Loretta Obrien, MD
NPI 1750379657 · Infectious Disease Physician · Livermore, CA
Loretta Obrien, MD is a Infectious Disease Physician provider in Livermore, CA (NPI 1750379657).
Provider details
- NPI number
- 1750379657
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- G 87855 (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
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
- 2005-10-13
- Last updated
- 2008-10-23
Frequently asked questions
- What is Loretta Obrien's NPI number?
- Loretta Obrien's National Provider Identifier (NPI) is 1750379657, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Loretta Obrien's specialty?
- Loretta Obrien is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Loretta Obrien located?
- Loretta Obrien's practice location on file with NPPES is 4951 Arroyo Rd, Livermore, CA 94550-9650.
- What is Loretta Obrien's phone number?
- The practice phone number listed in the NPPES registry for Loretta Obrien is (925) 373-4700.
- Is Loretta Obrien's NPI active?
- Yes — Loretta Obrien's NPI (1750379657) is active in the NPPES registry as of the last update on 2008-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.