2026 NPPES data Psychiatry Physician NPI 1225425754 D.O.
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STEVEN AYERS, D.O.

Psychiatry Physician in HILO, Hawaii. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
599
Medicare Part D claims · 44 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$325.18
17 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

STEVEN AYERS, D.O. filed 599 Medicare Part D claims in 2023 as a Psychiatry Physician in HILO, Hawaii, prescribing 97% generic.

599
Part D claims, 2023
97%
generic prescribing
$325.18
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

STEVEN AYERS, D.O.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

599 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

STEVEN AYERS, D.O. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about STEVEN AYERS, D.O.?

Quality data not reported

NPI registry status

Active

Issued 04/22/2015

NPI 1225425754

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

599 42% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in Hawaii

How Psychiatry Physician compares to other specialties among Hawaii providers

Hawaii providers

Psychiatry Physician share within Hawaii

1. Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatry Physician share within Hawaii

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatry Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

STEVEN AYERS, D.O. appears in the CMS NPPES registry as a Psychiatry Physician provider holding D.O. credentials at 45 MOHOULI ST, HILO, HI, 96720, with a listed phone of (808) 934-3040. NPI 1225425754 was issued on 04/22/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AYERS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 599 prescription claims written by this provider, covering 44 Medicare beneficiaries and totaling roughly $37K in drug spend, split 3% brand-name and 97% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

45 MOHOULI ST
HILO, HI 96720

Provider Details

NPI 1225425754
Specialty Psychiatry Physician
Credentials D.O.
Gender Male
NPI Issued 04/22/2015

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for STEVEN AYERS, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$325

Largest payer

Otsuka America Pharmaceutical, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

STEVEN AYERS, D.O. — brand share 3.0%
Specialty average (est.)

3% brand-name claims vs 97% generic, on 599 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

599
Total Claims
$37K
Total Drug Cost
44
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
934
Total Day Supply
27,246
Brand vs Generic
3% brand / 97% generic
Brand Drug Cost
$23K
Generic Drug Cost
$14K

Patient Demographics

Average Patient Age
65.4 years
Avg HCC Risk Score
1.04
Gender Split
59% female / 41% male
Age Distribution
<65: 14, 65-74: 23, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What STEVEN AYERS, D.O. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Lamotrigine
65
Bupropion Xl
Bupropion Hcl
41
Venlafaxine Hcl Er
Venlafaxine Hcl
37
Fluoxetine Hcl
36
Sertraline Hcl
30
Quetiapine Fumarate
25
Trazodone Hcl
24
Clonazepam
23
Gabapentin
23
Alprazolam
18

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Psychiatry Physician Overview

How STEVEN AYERS, D.O. fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

STEVEN AYERS, D.O.'s 599 claims are below the specialty average of 1,038.

Nearby Psychiatry Physician Providers in Hawaii

Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as AYERS.

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEVEN AYERS, D.O.'s specialty?
STEVEN AYERS, D.O. specializes in Psychiatry Physician and practices in HILO, Hawaii. Credentials: D.O..
How much does STEVEN AYERS, D.O. prescribe under Medicare Part D?
In 2023, STEVEN AYERS, D.O. wrote 599 Medicare Part D claims totaling $37K in drug costs for 44 beneficiaries.
Where is STEVEN AYERS, D.O. located?
STEVEN AYERS, D.O. is located at 45 MOHOULI ST, HILO, HI, 96720. Phone: (808) 934-3040.
What is STEVEN AYERS, D.O.'s NPI number?
STEVEN AYERS, D.O.'s National Provider Identifier (NPI) is 1225425754, issued on 04/22/2015.
Does STEVEN AYERS, D.O. prescribe more brand-name or generic drugs?
STEVEN AYERS, D.O.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $23K in brand drug costs.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does STEVEN AYERS, D.O. prescribe most often?
Based on 2023 Medicare Part D data, STEVEN AYERS, D.O.'s most frequently prescribed drugs include Lamotrigine, Bupropion Xl, Venlafaxine Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEVEN AYERS, D.O. accept Medicare?
STEVEN AYERS, D.O. appears in CMS Medicare data with 599 Part D claims and 44 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEVEN AYERS, D.O.'s credentials?
STEVEN AYERS, D.O.'s NPI is 1225425754 with credentials D.O.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology