DIANNE M NAGY RNC, NP
NPI 1366551087
Nurse Practitioner - Obstetrics & Gynecology in Billings, MT

Q: What is Dianne Nagy's NPI number?

The NPI number for Dianne Nagy is 1366551087. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Q: What is Dianne Nagy's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Obstetrics & Gynecology, with taxonomy code 363LX0001X.

Q: When was this NPI record last updated?

The NPPES record for Dianne Nagy was last updated on March 2, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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 August 29, 2006PECOS EnrolledAccepts Medicare Assignment

2900 12TH AVE N, BILLINGS, MT 59101(406) 238-6010 Get Directions Write a Review

NPPES record last updated: March 2, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dianne M Nagy Rnc, Np NPPES

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

DIANNE M NAGY RNC, NP (NPI 1366551087) is an individual obstetrics & gynecology provider in Billings, Montana, licensed in Montana (100207) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Billings Clinic, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1366551087

Entity TypeIndividualFemale

Primary Taxonomy363LX0001X

Provider Legal NameDIANNE M NAGYCredential: RNC, NP

Location Address2900 12TH AVE NBillings, MT 59101-7506

Mailing Address2900 12th Ave N, Ste 245wBillings, MT 59101-7586 · (406) 238-6010

Phone(406) 238-6010

Sole ProprietorNo

Medical School CMSOtherGraduated 1992

Enumeration DateAugust 29, 2006

Last NPPES UpdateMarch 2, 2020

NPPES CertifiedMarch 2, 2020

✔ NPI 1366551087 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Obstetrics & GynecologyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LX0001X

Licenses✔ Licensed in MT · 100207✔ Licensed in MT · RN017133

2900 12TH AVE N, Billings, MT 59101

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Other Identifiers 4

Other37491MT · Blue Cross

Other46155203MT · Wausau

Other1001479MT · Preferred One

Medicaid432289MT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, Providence Health Plan.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

Dianne M Nagy Rnc, Np 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 ID3072607183

PECOS Enrollment IDI20070920000353

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 Dianne Nagy reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

St. Vincent Healthcare

Same address

Multi-Specialty

2900 12TH AVE N, SUITE 340W
Billings, MT 59101

Reassigned Medicare billing, Montana enrollment
Medicare enrollment name: Scl Health Montana
186 clinicians in this Medicare group

NPI 1013948983 (406) 237-4050

Scl Health Medical Group - Billings LLC

0.1 mi

Clinic/Center

1233 N 30TH ST
Billings, MT 59101

Reassigned Medicare billing, Montana enrollment
438 clinicians in this Medicare group

NPI 1508289703 (406) 237-7700

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

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

163 services135 patients

Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101

This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.

82 services82 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

22 services22 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

12 services12 patients

Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091

A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Billings Clinic

Acute Care Hospitals · Billings, MT

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number270004

Location2800 10th Ave NBillings, MT 59101 · Yellowstone County

Emergency services Birthing friendly

St Vincent Healthcare

Acute Care Hospitals · Billings, MT

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number270049

Location1233 N 30th StBillings, MT 59101 · Yellowstone County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59101 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

$87.97 typical visit price

range $56.81 – $172.26

Typical copayment $21.99 (range $14.20 – $43.06)

Most-billed visit code 99203

Established Patient

$100.16 typical visit price

range $18.24 – $140.32

Typical copayment $25.04 (range $4.56 – $35.08)

Most-billed visit code 99214

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.

DANIEL M MOLLOY M.D.

Obstetrics & Gynecology

2900 12TH AVE N, STE 245W
BILLINGS, MT 59101

Yellowstone County (406) 238-6010

ST VINCENT HEALTHCARE

Clinic/Center

2900 12TH AVE N, SUITE 130W
BILLINGS, MT 59101

Yellowstone County (406) 237-3620

ST. VINCENT HEALTHCARE

Clinic/Center (Multi-Specialty)

2900 12TH AVE N, SUITE 340W
BILLINGS, MT 59101

Yellowstone County (406) 237-4050

CHARLES MCCLAVE MD

Internal Medicine

2900 12TH AVE N, SUITE 160W
BILLINGS, MT 59101

Yellowstone County (406) 237-8500

DAVID W SHENTON JR. M.D.

Orthopaedic Surgery (Sports Medicine)

2900 12TH AVE N, #100E
BILLINGS, MT 59101

Yellowstone County (406) 238-6700

DR. ROBERT E STOCKDALE M.D.

Urology

2900 12TH AVE N, STE 503E
BILLINGS, MT 59101

Yellowstone County (406) 237-5400

TAD A. STICHMAN PA-C

Physician Assistant

2900 12TH AVE N, SUITE 140W
BILLINGS, MT 59101

Yellowstone County (406) 237-5050

FRED V SCHNEIDER M.D.

Surgery

2900 12TH AVE N, STE 502E
BILLINGS, MT 59101

Yellowstone County (406) 245-6982

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 Dianne Nagy's NPI number?

The NPI number for Dianne Nagy is 1366551087. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Where is Dianne Nagy located?

Dianne Nagy practices at 2900 12th Ave N, Billings, MT 59101. The listed phone number is (406) 238-6010.

What is Dianne Nagy's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Obstetrics & Gynecology, with taxonomy code 363LX0001X.

Is Dianne Nagy enrolled in Medicare?

Yes. Dianne Nagy 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 organizations bill Medicare for Dianne Nagy's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dianne Nagy reassigns Medicare benefits to 2 organizations: St. Vincent Healthcare (Billings, MT) and Scl Health Medical Group - Billings LLC (Billings, MT). 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 Dianne Nagy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Dianne Nagy accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and Providence Health Plan list Dianne Nagy 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.

Is Dianne Nagy affiliated with any hospitals?

According to CMS data, Dianne Nagy is affiliated with Billings Clinic and St Vincent Healthcare.

When was this NPI record last updated?

The NPPES record for Dianne Nagy was last updated on March 2, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.