Masaru Nishiaoki, MD
NPI 1871026831 · Addiction Medicine (Family Medicine) Physician · Virginia Beach, VA
Enrolled with Medicare as Practitioner - Addiction Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Masaru Nishiaoki, MD is a Addiction Medicine (Family Medicine) Physician provider in Virginia Beach, VA (NPI 1871026831).
Provider details
- NPI number
- 1871026831
- Entity type
- Individual
- Primary specialty
- Addiction Medicine (Family Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0101268181 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
449 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 236 | $75 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 128 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $124 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 26 | $164 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 17 | $77 |
Typical Medicare-allowed amounts for these services range $75–$164 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Topiramate | 77 | 20 |
| Trazodone Hcl | 67 | 26 |
| Naltrexone Hcl | 58 | 21 |
| Bupropion Hclbrand: Bupropion Xl | 57 | 11 |
| Hydroxyzine Hcl | 55 | 11 |
| Diazepam | 55 | — |
| Buprenorphine Hcl/Naloxone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,350 across 33 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 825 Fairfax AveEastern Virginia Medical School Ghent Family MedicineNorfolk, VA 23507Phone: (757) 446-5738
- 501 N 2nd St # 100Richmond, VA 23219-1359Phone: (804) 628-6777
Registry dates
- Enumerated
- 2017-04-06
- Last updated
- 2021-09-28
- Certified
- 2021-09-28
Frequently asked questions
- What is Masaru Nishiaoki's NPI number?
- Masaru Nishiaoki's National Provider Identifier (NPI) is 1871026831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Masaru Nishiaoki's specialty?
- Masaru Nishiaoki is listed in the NPPES registry with a primary specialty of Addiction Medicine (Family Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Masaru Nishiaoki located?
- Masaru Nishiaoki's practice location on file with NPPES is 4509 Whitechapel Drive, Virginia Beach, VA 23455.
- What is Masaru Nishiaoki's phone number?
- The practice phone number listed in the NPPES registry for Masaru Nishiaoki is (757) 460-4655.
- Does Masaru Nishiaoki accept Medicare?
- Masaru Nishiaoki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Masaru Nishiaoki's NPI active?
- Yes — Masaru Nishiaoki's NPI (1871026831) is active in the NPPES registry as of the last update on 2021-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.