Chihiro Hirai-Adachi
Obstetrics & Gynecology Physician · Las Vegas, NV
Chihiro Hirai-Adachi is an obstetrics & gynecology physician with a practice address in Las Vegas, Nevada, and NPI 1568993517, issued on Mar 22, 2017. Check the license (Nevada DO2921, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Chihiro Hirai-Adachi
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- DO2921 NV
Self-reported in NPPES; status is on the state search - Practice location
- 420 N Nellis Blvd, Las Vegas, NV 89110
- Phone
- (702) 877-5199
- Enumerated
- Mar 22, 2017
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (702) 838-1456
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 318 in Nevada → Look up another NPI →
Also registered at 420 N Nellis Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mona Baidwan, MDPediatrics Physician1487830709
- James EddingerPersonal Care Attendant1932037207
- Khursheeda Pathan, M.D.Pediatrics Physician1225106131
Verify Chihiro Hirai-Adachi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license DO2921Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
55 Medicare Part D claims for 26 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $121.98
1 payment: food and beverage; the largest payer was Organon Llc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Chihiro Hirai-Adachi among 318 obstetrics & gynecology physician records in Nevada
Chihiro Hirai-Adachi is one of 318 obstetrics & gynecology physician records with a practice address in Nevada. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 85% of them.
- NPI issued2017 · 85% of these records are older, 14% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2021 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Nevada
There are 318 obstetrics & gynecology physician records in Nevada.
All 318 in Nevada → Every provider in Las Vegas → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Carl Allen, MDLas Vegas, NV 891101043284995
- Paulina Altshuler, DOLas Vegas, NV 891091205397833
- Abbey Burger, DOLas Vegas, NV 891091912298266
- Meghan Carlson, MDLas Vegas, NV 891091952988511
- Kassandra CollettaLas Vegas, NV 891091083102131
- Kelly Jackson-King, MDLas Vegas, NV 891091497726806
- David Kartzinel, M.D.Las Vegas, NV 891091700842226
- Kate Mowry, MDLas Vegas, NV 891091831711647
Common questions
What is Chihiro Hirai-Adachi's NPI number?
Chihiro Hirai-Adachi's National Provider Identifier (NPI) is 1568993517, issued on Mar 22, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Chihiro Hirai-Adachi located?
The NPPES record lists a practice address at 420 N Nellis Blvd, Las Vegas, NV, 89110. Phone: (702) 877-5199. Providers update this record themselves, so call before visiting.
How can I verify Chihiro Hirai-Adachi's license?
NPPES lists Nevada license number DO2921, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chihiro Hirai-Adachi prescribe under Medicare Part D?
In 2024, Chihiro Hirai-Adachi had 55 Medicare Part D claims for 26 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.