On Lok Senior Health Services
NPI 1538362454 · Adult Day Care Clinic/Center · San Francisco, CA
On Lok Senior Health Services is a Adult Day Care Clinic/Center organization in San Francisco, CA (NPI 1538362454).
Provider details
- NPI number
- 1538362454
- Entity type
- Organization
- Primary specialty
- Adult Day Care Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Grace Harper, Chief Executive Officer(415) 292-8883
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2007-06-07
- Last updated
- 2024-04-24
- Certified
- 2024-04-24
Frequently asked questions
- What is On Lok Senior Health Services's NPI number?
- On Lok Senior Health Services's National Provider Identifier (NPI) is 1538362454, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is On Lok Senior Health Services?
- On Lok Senior Health Services is classified in the NPPES registry as Adult Day Care Clinic/Center (Ambulatory Health Care Facilities).
- Where is On Lok Senior Health Services located?
- On Lok Senior Health Services's practice location on file with NPPES is 1000 Montgomery St, San Francisco, CA 94133-4505.
- What is On Lok Senior Health Services's phone number?
- The practice phone number listed in the NPPES registry for On Lok Senior Health Services is (415) 292-8600.
- Who is the authorized official for On Lok Senior Health Services?
- The authorized official listed on On Lok Senior Health Services's NPPES record is Grace Harper, Chief Executive Officer. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is On Lok Senior Health Services's NPI active?
- Yes — On Lok Senior Health Services's NPI (1538362454) is active in the NPPES registry as of the last update on 2024-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.