IndividualActive
Matthew Riehm
NPI 1629941695 · Counselor · Los Alamitos, CA
Matthew Riehm is a Counselor provider in Los Alamitos, CA (NPI 1629941695).
Provider details
- NPI number
- 1629941695
- Entity type
- Individual
- Primary specialty
- CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 210088447 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(54/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
3591 Cerritos Ave
Los Alamitos, CA 90720-2414
Phone: (562) 799-4780
Fax: (562) 799-4798
Street-level locationGet directions
Mailing address
8392 Malloy Dr
Huntington Beach, CA 92646-5039
Registry dates
- Enumerated
- 2025-09-25
- Last updated
- 2025-09-25
- Certified
- 2025-09-25
Frequently asked questions
- What is Matthew Riehm's NPI number?
- Matthew Riehm's National Provider Identifier (NPI) is 1629941695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Riehm's specialty?
- Matthew Riehm is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).
- Where is Matthew Riehm located?
- Matthew Riehm's practice location on file with NPPES is 3591 Cerritos Ave, Los Alamitos, CA 90720-2414.
- What is Matthew Riehm's phone number?
- The practice phone number listed in the NPPES registry for Matthew Riehm is (562) 799-4780.
- Is Matthew Riehm's NPI active?
- Yes — Matthew Riehm's NPI (1629941695) is active in the NPPES registry as of the last update on 2025-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.