Lee Brett Eisan M.D. Inc
NPI 1891093670 · Internal Medicine Physician · Danville, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lee Brett Eisan M.D. Inc is a Internal Medicine Physician organization in Danville, CA (NPI 1891093670).
Provider details
- NPI number
- 1891093670
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Lee Eisan, President(925) 837-7409
- License
- G37664 (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
15 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
- 2011-03-03
- Last updated
- 2011-03-03
Frequently asked questions
- What is Lee Brett Eisan M.D. Inc's NPI number?
- Lee Brett Eisan M.D. Inc's National Provider Identifier (NPI) is 1891093670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Lee Brett Eisan M.D. Inc?
- Lee Brett Eisan M.D. Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lee Brett Eisan M.D. Inc located?
- Lee Brett Eisan M.D. Inc's practice location on file with NPPES is 907 San Ramon Valley Blvd, Danville, CA 94526-4036.
- What is Lee Brett Eisan M.D. Inc's phone number?
- The practice phone number listed in the NPPES registry for Lee Brett Eisan M.D. Inc is (925) 837-7409.
- Does Lee Brett Eisan M.D. Inc accept Medicare?
- Lee Brett Eisan M.D. Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Lee Brett Eisan M.D. Inc?
- The authorized official listed on Lee Brett Eisan M.D. Inc's NPPES record is Lee Eisan, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Lee Brett Eisan M.D. Inc's NPI active?
- Yes — Lee Brett Eisan M.D. Inc's NPI (1891093670) is active in the NPPES registry as of the last update on 2011-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.