MRS. HOLLY ELIZABETH MOOK
NPI 1386977791
Social Worker - Clinical in Helena, MT

Q: What is Holly Mook's NPI number?

The NPI number for Holly Mook is 1386977791. It was assigned to this individual provider in the NPPES registry on September 16, 2009.

Q: What is Holly Mook's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Holly Mook was last updated on May 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 16, 2009PECOS Enrolled

1930 9TH AVE, HELENA, MT 59601(406) 457-0000 Get Directions Write a Review

NPPES record last updated: May 21, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Mrs. Holly Elizabeth Mook NPPES

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

MRS. HOLLY ELIZABETH MOOK (NPI 1386977791) is an individual clinical provider in Helena, Montana, licensed in Montana (79599) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1386977791

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameMRS. HOLLY ELIZABETH MOOK

Location Address1930 9TH AVEHelena, MT 59601-4759

Mailing Address1930 9th AveHelena, MT 59601-4759 · (406) 500-2059

Phone(406) 457-0000

Sole ProprietorYes

Medical School CMSOtherGraduated 2023

Enumeration DateSeptember 16, 2009

Last NPPES UpdateMay 21, 2025

NPPES CertifiedMay 21, 2025

✔ NPI 1386977791 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

License✔ Licensed in MT · 79599

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.

Also ListedCounselor · Addiction (Substance Use Disorder)Taxonomy 101YA0400X · License 1030 (MT)

1930 9TH AVE, Helena, MT 59601

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Holly Elizabeth Mook is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7113428905

PECOS Enrollment IDI20250902003878

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59601 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 $56.81 – $172.26

Typical copayment $0.00 (range $14.20 – $43.06)

Most-billed visit code NA

Established Patient

$70.82 typical visit price

range $18.24 – $140.32

Typical copayment $17.70 (range $4.56 – $35.08)

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.

REBEKAH N COONEN LCPC, LAC

Counselor (Professional)

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 457-0000

DR. WILLIAM CHRISTOPHER SNIDER DO

Family Medicine

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 457-0000

DR. ZACHARY EDWARD DRAKE DMD

Dentist (General Practice)

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 533-5959

SHERRY WINCHELL RD, LN

Dietitian, Registered

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 457-8912

DR. CHRISTOPHER J HOLDHUSEN M.D.

Family Medicine

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 457-0000

DR. HEATHER MCREE DO

Neuromusculoskeletal Medicine & OMM

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 457-0000

MRS. MARY CATHERINE WENGER NP

Nurse Practitioner

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 457-0000

LAURA FUNK LCSW

Social Worker (Clinical)

1930 9TH AVE
HELENA, MT 59601

Lewis And Clark County (406) 457-0000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Holly Mook's NPI number?

The NPI number for Holly Mook is 1386977791. It was assigned to this individual provider in the NPPES registry on September 16, 2009.

Where is Holly Mook located?

Holly Mook practices at 1930 9th Ave, Helena, MT 59601. The listed phone number is (406) 457-0000.

What is Holly Mook's specialty?

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

Is Holly Mook enrolled in Medicare?

Yes. Holly Mook is registered in the Medicare PECOS enrollment system.

What insurance does Holly Mook accept?

Health plans from Blue Cross and Blue Shield of Montana list Holly Mook as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Holly Mook was last updated on May 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.