OrganizationActive
Harris Histology Services
NPI 1003810409 · Clinical Medical Laboratory · Tustin, CA
Harris Histology Services is a Clinical Medical Laboratory organization in Tustin, CA (NPI 1003810409).
Provider details
- NPI number
- 1003810409
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Organization subpart
- No
- Authorized official
- Rick Harris, Owner/Chief Histotech(714) 832-4041
- License
- HT-009490 (CA)
Specialties & taxonomies
Laboratories
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
21 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
630 S B St
Tustin, CA 92780-4318
Phone: (714) 832-4041
Fax: (714) 832-4127
Street-level locationGet directions
Mailing address
630 S B St
Tustin, CA 92780-4318
Registry dates
- Enumerated
- 2005-06-13
- Last updated
- 2020-08-22
Frequently asked questions
- What is Harris Histology Services's NPI number?
- Harris Histology Services's National Provider Identifier (NPI) is 1003810409, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Harris Histology Services?
- Harris Histology Services is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Harris Histology Services located?
- Harris Histology Services's practice location on file with NPPES is 630 S B St, Tustin, CA 92780-4318.
- What is Harris Histology Services's phone number?
- The practice phone number listed in the NPPES registry for Harris Histology Services is (714) 832-4041.
- Who is the authorized official for Harris Histology Services?
- The authorized official listed on Harris Histology Services's NPPES record is Rick Harris, Owner/Chief Histotech. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Harris Histology Services's NPI active?
- Yes — Harris Histology Services's NPI (1003810409) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.