IndividualActive
Mark Lo, MD
NPI 1578515391 · Psychiatry Physician · Patton, CA
Mark Lo, MD is a Psychiatry Physician provider in Patton, CA (NPI 1578515391).
Provider details
- NPI number
- 1578515391
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- A52787 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
3102 East Highland Ave
Patton, CA 92369
Phone: (909) 425-7000
Fax: (909) 425-7520
Approximate (ZIP-level) locationGet directions
Mailing address
1600 9th St
Sacramento, CA 95814-6414
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Lo's NPI number?
- Mark Lo's National Provider Identifier (NPI) is 1578515391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lo's specialty?
- Mark Lo is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Lo located?
- Mark Lo's practice location on file with NPPES is 3102 East Highland Ave, Patton, CA 92369.
- What is Mark Lo's phone number?
- The practice phone number listed in the NPPES registry for Mark Lo is (909) 425-7000.
- Is Mark Lo's NPI active?
- Yes — Mark Lo's NPI (1578515391) 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.