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DIANA HARTMAN LCSW
NPI 1528632551
Social Worker in Helena, MT

Active since May 14, 2021PECOS Enrolled
2755 COLONIAL DR, HELENA, MT 59601(406) 444-7500 Get Directions Write a Review

NPPES record last updated: January 6, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 6, 2026, Mar 20, 2023, May 14, 2021 (3 updates tracked since 2021).

About Diana Hartman Lcsw NPPES

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

DIANA HARTMAN LCSW (NPI 1528632551) is an individual social worker in Helena, Montana, licensed in Montana (48742) and active in the NPI registry since May 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1528632551
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameDIANA HARTMANCredential: LCSW
Location Address2755 COLONIAL DRHelena, MT 59601-4926
Mailing AddressPo Box 5539Helena, MT 59604-5539 · (406) 444-7515
Phone(406) 444-7500
Sole ProprietorNo
Enumeration DateMay 14, 2021
Last NPPES UpdateJanuary 6, 20263 updates tracked since enumeration
NPPES CertifiedJanuary 6, 2026
✔ NPI 1528632551 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in MT · 48742
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X · License LW61371991 (WA), 48742 (MT)
2755 COLONIAL DR, Helena, MT 59601
Open in Google Maps ↗

Other Identifiers 1

Other48742MT · License

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana Hartman 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

2

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

Montana Children's Home & Hospital
Same address
Psychiatric Residential Treatment Facility
2755 COLONIAL DR
Helena, MT 59601
  • Reassigned Medicare billing, Montana enrollment
  • Medicare enrollment name: Montana Childrens Home & Hospital
  • 50 clinicians in this Medicare group
NPI 1255704508 (406) 444-7500
Comprehensive Healthcare
406 mi
Community/Behavioral Health
402 S 4TH AVE
Yakima, WA 98902
  • Reassigned Medicare billing, Washington enrollment
  • 82 clinicians in this Medicare group
NPI 1073527453 (509) 575-4084

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

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.

DR. DEANNA L. ARMSTRONG M.D.
Psychiatry & Neurology (Psychiatry)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
CHRISTINA MARIE HAWBAKER GC
Genetic Counselor, MS
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-1061
MS. CYNTHIA MARIE HUDSON MA, MS
Genetic Counselor, MS
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
MARY KATHRYN SCHIEL MSN, APRN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
COURTNEY LYNNE ROGASKI LCSW
Social Worker (Clinical)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
ALICIA MARIE GALAHAN
Nurse Practitioner (Psychiatric/Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
MS. BLANCHE NICOLE SUMNER MS, LCPC
Counselor (Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
THOMAS BOGEN OTR/L
Occupational Therapist
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-1129

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 Diana Hartman's NPI number?

The NPI number for Diana Hartman is 1528632551. It was assigned to this individual provider in the NPPES registry on May 14, 2021.

Where is Diana Hartman located?

Diana Hartman practices at 2755 Colonial Dr, Helena, MT 59601. The listed phone number is (406) 444-7500.

What is Diana Hartman's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Diana Hartman enrolled in Medicare?

Yes. Diana Hartman is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Diana Hartman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Hartman reassigns Medicare benefits to 2 organizations: Montana Children's Home & Hospital (Helena, MT) and Comprehensive Healthcare (Yakima, WA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Hartman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diana Hartman accept?

Health plans from Blue Cross and Blue Shield of Montana, PacificSource Health Plans and UnitedHealthcare list Diana Hartman 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 Diana Hartman was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.