Atsuko Koyama, M.D., M.P.H
NPI 1730387564 · Emergency Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Atsuko Koyama, M.D., M.P.H is a Emergency Medicine Physician provider in Phoenix, AZ (NPI 1730387564).
Provider details
- NPI number
- 1730387564
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.P.H
- Sex
- Female
- Sole proprietor
- No
- License
- 59533 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$255 across 14 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
Registry dates
- Enumerated
- 2007-07-03
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Atsuko Koyama's NPI number?
- Atsuko Koyama's National Provider Identifier (NPI) is 1730387564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Atsuko Koyama's specialty?
- Atsuko Koyama is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Atsuko Koyama located?
- Atsuko Koyama's practice location on file with NPPES is 4141 N 32nd St Ste 105, Phoenix, AZ 85018-4775.
- What is Atsuko Koyama's phone number?
- The practice phone number listed in the NPPES registry for Atsuko Koyama is (602) 279-2337.
- Does Atsuko Koyama accept Medicare?
- Atsuko Koyama is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Atsuko Koyama's NPI active?
- Yes — Atsuko Koyama's NPI (1730387564) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.