MONICA TERESA RIOJA-GRISSOM LCSW
NPI 1629790050
Social Worker - Clinical in Littleton, CO

Q: What is Monica Rioja-grissom's NPI number?

The NPI number for Monica Rioja-grissom is 1629790050. It was assigned to this individual provider in the NPPES registry on September 13, 2022.

Q: What is Monica Rioja-grissom's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Active since September 13, 2022PECOS Enrolled

61 W DAVIES AVE N, LITTLETON, CO 80120(303) 730-8858 Get Directions Write a Review

NPPES record last updated: April 28, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 2, 2024, Oct 10, 2022, Sep 13, 2022 (3 updates tracked since 2022).

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About Monica Teresa Rioja-grissom Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MONICA TERESA RIOJA-GRISSOM LCSW (NPI 1629790050) is an individual clinical provider in Littleton, Colorado, licensed in Colorado (CSW.09931339) and active in the NPI registry since September 2022. She is enrolled in Medicare PECOS and maintains a secondary practice location in Fitchburg.

NPPES Registry Identity

NPI1629790050

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameMONICA TERESA RIOJA-GRISSOMCredential: LCSW

Location Address61 W DAVIES AVE NLittleton, CO 80120-5252

Mailing Address116 Inverness Dr E Ste 105Englewood, CO 80112-5125 · (303) 730-8858

Phone(303) 730-8858

Sole ProprietorNo

Enumeration DateSeptember 13, 2022

Last NPPES UpdateApril 28, 20253 updates tracked since enumeration

NPPES CertifiedApril 28, 2025

✔ NPI 1629790050 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

Licenses✔ Licensed in CO · CSW.09931339✔ Licensed in WI · 11612123

Definition

A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

61 W DAVIES AVE N, Littleton, CO 80120

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Secondary Practice Location 1

Location 13051 Cahill laneFitchburg, WI 53711-4463 · Phone (608) 661-7200

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Monica Teresa Rioja-grissom Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Monica Rioja-grissom reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Arapahoe Mental Health Center, Inc

Same address

Mental Health (Including Community Mental Health Center)

61 W DAVIES AVE N
Littleton, CO 80120

Reassigned Medicare billing, Colorado enrollment
331 clinicians in this Medicare group

NPI 1043066137 (303) 730-8858

Group Health Cooperative Of South Central Wisconsin

838 mi

Health Maintenance Organization

1265 JOHN Q HAMMONS DR
Madison, WI 53717

Reassigned Medicare billing, Wisconsin enrollment
422 clinicians in this Medicare group

NPI 1245260165 (608) 251-4156

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$0.00 typical visit price

range $58.06 – $174.82

Typical copayment $0.00 (range $14.51 – $43.70)

Most-billed visit code NA

Established Patient

$72.20 typical visit price

range $18.88 – $142.79

Typical copayment $18.05 (range $4.72 – $35.69)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. ERIN LYNN RIPPER

Counselor