What is Gary Showalter's NPI number?

Gary Showalter's National Provider Identifier (NPI) is 1588337208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gary Showalter's specialty?

Gary Showalter is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).

Where is Gary Showalter located?

Gary Showalter's practice location on file with NPPES is 17837 San Rafael St, Fountain Valley, CA 92708-5232.

What is Gary Showalter's phone number?

The practice phone number listed in the NPPES registry for Gary Showalter is (714) 968-3907.

Is Gary Showalter's NPI active?

Yes — Gary Showalter's NPI (1588337208) is active in the NPPES registry as of the last update on 2021-10-05.

IndividualActive

Gary Showalter

NPI 1588337208 · Mental Health Counselor · Fountain Valley, CA

Gary Showalter is a Mental Health Counselor provider in Fountain Valley, CA (NPI 1588337208).

Provider details

NPI number: 1588337208
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800X
Behavioral Health & Social Service Providers

Profile Score

Established profile(65/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
4 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
4 documented practice locations

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

17837 San Rafael St

Fountain Valley, CA 92708-5232

Phone: (714) 968-3907

Street-level locationGet directions

More CA providers

Mailing address

27261 Las Ramblas Ste 220

Mission Viejo, CA 92691-6468

Additional practice locations (3)

1065 Santa Cruz Cir
Costa Mesa, CA 92626-1618
Phone: (714) 751-9544
921 Dahlia Ave
Costa Mesa, CA 92626-1709
Phone: (714) 641-2059
9091 Caladium Ave
Fountain Valley, CA 92708-1418
Phone: (714) 841-7602

Enumerated: 2021-07-28
Last updated: 2021-10-05
Certified: 2021-10-05

Frequently asked questions

What is Gary Showalter's NPI number?: Gary Showalter's National Provider Identifier (NPI) is 1588337208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Gary Showalter's specialty?: Gary Showalter is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
Where is Gary Showalter located?: Gary Showalter's practice location on file with NPPES is 17837 San Rafael St, Fountain Valley, CA 92708-5232.
What is Gary Showalter's phone number?: The practice phone number listed in the NPPES registry for Gary Showalter is (714) 968-3907.
Is Gary Showalter's NPI active?: Yes — Gary Showalter's NPI (1588337208) is active in the NPPES registry as of the last update on 2021-10-05.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.