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Gerson Marroquin
NPI 1174831598 · Counselor · Rancho Cucamonga, CA
Gerson Marroquin is a Counselor provider in Rancho Cucamonga, CA (NPI 1174831598).
Provider details
- NPI number
- 1174831598
- Entity type
- Individual
- Primary specialty
- CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(76/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
83% 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
9540 Center Ave
Ste 100
Rancho Cucamonga, CA 91730-5840
Phone: (909) 728-2638
Street-level locationGet directions
Mailing address
9540 Center Ave.
Rancho Cucamonga, CA 91730
Registry dates
- Enumerated
- 2010-09-20
- Last updated
- 2014-02-19
Frequently asked questions
- What is Gerson Marroquin's NPI number?
- Gerson Marroquin's National Provider Identifier (NPI) is 1174831598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerson Marroquin's specialty?
- Gerson Marroquin is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).
- Where is Gerson Marroquin located?
- Gerson Marroquin's practice location on file with NPPES is 9540 Center Ave, Rancho Cucamonga, CA 91730-5840.
- What is Gerson Marroquin's phone number?
- The practice phone number listed in the NPPES registry for Gerson Marroquin is (909) 728-2638.
- Is Gerson Marroquin's NPI active?
- Yes — Gerson Marroquin's NPI (1174831598) is active in the NPPES registry as of the last update on 2014-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.