Alta-Grace L Tan, Psy D Psychological Services, Inc
NPI 1104920230 · Psychologist · Northridge, CA
Alta-Grace L Tan, Psy D Psychological Services, Inc is a Psychologist organization in Northridge, CA (NPI 1104920230).
Provider details
- NPI number
- 1104920230
- Entity type
- Organization
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Alta-Grace Tan, Owner(818) 523-1809
- License
- PSY18653 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
- 2006-09-11
- Last updated
- 2010-05-28
Frequently asked questions
- What is Alta-Grace L Tan, Psy D Psychological Services, Inc's NPI number?
- Alta-Grace L Tan, Psy D Psychological Services, Inc's National Provider Identifier (NPI) is 1104920230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Alta-Grace L Tan, Psy D Psychological Services, Inc?
- Alta-Grace L Tan, Psy D Psychological Services, Inc is classified in the NPPES registry as Psychologist (Behavioral Health & Social Service Providers).
- Where is Alta-Grace L Tan, Psy D Psychological Services, Inc located?
- Alta-Grace L Tan, Psy D Psychological Services, Inc's practice location on file with NPPES is 18546 Roscoe Blvd, Northridge, CA 91324-5454.
- What is Alta-Grace L Tan, Psy D Psychological Services, Inc's phone number?
- The practice phone number listed in the NPPES registry for Alta-Grace L Tan, Psy D Psychological Services, Inc is (818) 886-5628.
- Who is the authorized official for Alta-Grace L Tan, Psy D Psychological Services, Inc?
- The authorized official listed on Alta-Grace L Tan, Psy D Psychological Services, Inc's NPPES record is Alta-Grace Tan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Alta-Grace L Tan, Psy D Psychological Services, Inc's NPI active?
- Yes — Alta-Grace L Tan, Psy D Psychological Services, Inc's NPI (1104920230) is active in the NPPES registry as of the last update on 2010-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.