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JOHN DAVID THIEMANN LCSW
NPI 1730985433
Social Worker - Clinical in Las Vegas, NV

Active since February 22, 2025PECOS EnrolledAccepts Medicare Assignment
3247 S MARYLAND PKWY, LAS VEGAS, NV 89109(877) 663-7976 Get Directions Write a Review

NPPES record last updated: February 22, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About John David Thiemann Lcsw NPPES

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

JOHN DAVID THIEMANN LCSW (NPI 1730985433) is an individual clinical provider in Las Vegas, Nevada, licensed in Nevada (11896-C) and active in the NPI registry since February 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1730985433
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameJOHN DAVID THIEMANNCredential: LCSW
Location Address3247 S MARYLAND PKWYLas Vegas, NV 89109-2412
Mailing Address1312 S 6th StLas Vegas, NV 89104-1623
Phone(877) 663-7976
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateFebruary 22, 2025
NPPES CertifiedFebruary 22, 2025
✔ NPI 1730985433 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in NV · 11896-C
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.
3247 S MARYLAND PKWY, Las Vegas, NV 89109
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John David Thiemann Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4284153693
PECOS Enrollment IDI20250528002765
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 Reassignment

Medicare enrollment records show John Thiemann reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Optima Change Management, LLC
6.7 mi
Rehabilitation, Substance Use Disorder
1389 GALLERIA DR STE 110
Henderson, NV 89014
  • Reassigned Medicare billing, Nevada enrollment
  • 5 clinicians in this Medicare group
NPI 1588490908 (805) 550-3837

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 89109 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 $57.07 – $173.24
Typical copayment $0.00 (range $14.26 – $43.31)
Most-billed visit code NA
Established Patient
$71.14 typical visit price
range $18.27 – $140.96
Typical copayment $17.78 (range $4.56 – $35.24)
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 11

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

MS. KAREN ANN LYNCH LMFT
Marriage & Family Therapist
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (707) 430-8815
GEMECHIS N/A PETROS APRN
Nurse Practitioner (Psychiatric/Mental Health)
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (702) 776-3500
RUTH BOGOS APRN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (877) 663-7976
CHRISTIAN SAN PEDRO
Nurse Practitioner (Psychiatric/Mental Health)
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (725) 225-6522
CARRIE LEE DYE GENE LCSW
Social Worker (Clinical)
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (702) 776-3500
RACHEL MARIE WILLIAMS
Registered Nurse (Psychiatric/Mental Health)
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (702) 776-3500
MS. TANEISHA JANAE GRAVES LCSW
Social Worker (Clinical)
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (702) 776-3500
PAMELA GUERRA APRN
Nurse Practitioner (Psychiatric/Mental Health)
3247 S MARYLAND PKWY
LAS VEGAS, NV 89109
Clark County (626) 354-0810

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 John Thiemann's NPI number?

The NPI number for John Thiemann is 1730985433. It was assigned to this individual provider in the NPPES registry on February 22, 2025.

Where is John Thiemann located?

John Thiemann practices at 3247 S Maryland Pkwy, Las Vegas, NV 89109. The listed phone number is (877) 663-7976.

What is John Thiemann's specialty?

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

Is John Thiemann enrolled in Medicare?

Yes. John Thiemann is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for John Thiemann's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Thiemann reassigns Medicare benefits to Optima Change Management, LLC (Henderson, NV). The 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 John Thiemann's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Thiemann accept?

Health plans from Ambetter Health and Molina Healthcare list John Thiemann 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 John Thiemann was last updated on February 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.