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CHIHIRO HIRAI-ADACHI
NPI 1568993517
Obstetrics & Gynecology in Las Vegas, NV

Active since March 22, 2017PECOS EnrolledAccepts Medicare Assignment
420 N NELLIS BLVD, LAS VEGAS, NV 89110(702) 877-5199(702) 838-1456 Get Directions Write a Review

NPPES record last updated: December 9, 2021. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Dec 9, 2021, Mar 22, 2017 (2 updates tracked since 2017).

About Chihiro Hirai-adachi NPPES

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

CHIHIRO HIRAI-ADACHI (NPI 1568993517) is an individual obstetrics & gynecology provider in Las Vegas, Nevada, licensed in Nevada (DO2921) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS and is a graduate of Kansas City University Of Physicians And Surgeons (2017).

NPPES Registry Identity

NPI1568993517
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameCHIHIRO HIRAI-ADACHI
Location Address420 N NELLIS BLVDLas Vegas, NV 89110-5364
Mailing AddressPo Box 35380Las Vegas, NV 89133-5380 · (702) 579-3203 · Fax (702) 838-1456
Phone(702) 877-5199
Fax(702) 838-1456
Sole ProprietorNo
Medical School CMSKansas City University Of Physicians And SurgeonsGraduated 2017
Enumeration DateMarch 22, 2017
Last NPPES UpdateDecember 9, 20212 updates tracked since enumeration
NPPES CertifiedDecember 9, 2021
✔ NPI 1568993517 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in NV · DO2921
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
420 N NELLIS BLVD, Las Vegas, NV 89110
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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

Chihiro Hirai-adachi 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 ID5597169268
PECOS Enrollment IDI20210803003467
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 Chihiro Hirai-adachi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Optum Medical Group II Rhodes P C
11 mi
Internal Medicine
2704 N TENAYA WAY
Las Vegas, NV 89128
  • Reassigned Medicare billing, Nevada enrollment
  • 608 clinicians in this Medicare group
NPI 1790329407 (702) 877-5199
Nevada Womens Hospitalists - Storey PLLC
14 mi
Obstetrics & Gynecology
8906 SPANISH RIDGE AVE STE 202
Las Vegas, NV 89148
  • Reassigned Medicare billing, Nevada enrollment
  • Medicare enrollment name: Nevada Womens Hospitalists Dickens PLLC
  • 30 clinicians in this Medicare group
NPI 1528628047 (702) 577-1622

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 89110 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
$131.25 typical visit price
range $57.07 – $173.24
Typical copayment $32.81 (range $14.26 – $43.31)
Most-billed visit code 99204
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 3

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

KHURSHEEDA PATHAN M.D.
Pediatrics
420 N NELLIS BLVD
LAS VEGAS, NV 89110
Clark County (702) 459-7424
DR. MONA BAIDWAN MD
Pediatrics
420 N NELLIS BLVD
LAS VEGAS, NV 89110
Clark County (702) 877-5199
JAMES MELVIN EDDINGER
Technician (Personal Care Attendant)
420 N NELLIS BLVD
LAS VEGAS, NV 89110
Clark County (702) 339-5710

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 Chihiro Hirai-adachi's NPI number?

The NPI number for Chihiro Hirai-adachi is 1568993517. It was assigned to this individual provider in the NPPES registry on March 22, 2017.

Where is Chihiro Hirai-adachi located?

Chihiro Hirai-adachi practices at 420 N Nellis Blvd, Las Vegas, NV 89110. The listed phone number is (702) 877-5199.

What is Chihiro Hirai-adachi's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Chihiro Hirai-adachi enrolled in Medicare?

Yes. Chihiro Hirai-adachi 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 Chihiro Hirai-adachi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chihiro Hirai-adachi reassigns Medicare benefits to 2 organizations: Optum Medical Group II Rhodes P C (Las Vegas, NV) and Nevada Womens Hospitalists - Storey PLLC (Las Vegas, NV). 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 Chihiro Hirai-adachi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Chihiro Hirai-adachi was last updated on December 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.