2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1558459651 PSY-MH N.P.
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MICHELLE ONACKI, PSY-MH N.P.

Psychiatric/Mental Health Nurse Practitioner in TEMPE, Arizona. 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
216
Medicare Part D claims · 39 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927

What the federal data shows

MICHELLE ONACKI, PSY-MH N.P. filed 216 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in TEMPE, Arizona.

216
Part D claims, 2023

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.

MICHELLE ONACKI, PSY-MH N.P.'s Medicare Part D volume vs every U.S. prescriber

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

216 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 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

What does the federal data show about MICHELLE ONACKI, PSY-MH N.P.?

Quality data not reported

NPI registry status

Active

Issued 10/11/2006

NPI 1558459651

Primary specialty

Psychiatric/Mental Health Nurse Practitioner

Mid-sized

39,953 US NPIs in this specialty

Medicare Part D claims

216 77% vs specialty avg

2023 prescription claims

Specialty avg: 927

Specialty distribution in Arizona

How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Arizona providers

Arizona providers

Psychiatric/Mental Health Nurse Practitioner share within Arizona

1. Psychiatric/Mental Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatric/Mental Health Nurse Practitioner share within Arizona

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatric/Mental Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatric/Mental Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — 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).

MICHELLE ONACKI, PSY-MH N.P. appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding PSY-MH N.P. credentials at 4015 S MCCLINTOCK DR, TEMPE, AZ, 85282, with a listed phone of (480) 775-8811. NPI 1558459651 was issued on 10/11/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ONACKI 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 216 prescription claims written by this provider, covering 39 Medicare beneficiaries and totaling roughly $9K in drug spend. 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.

Psychiatric/Mental Health Nurse Practitioner is a mid-sized specialty nationwide, with 39,953 enrolled providers across 54 states and an average of 927 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

4015 S MCCLINTOCK DR
TEMPE, AZ 85282

Provider Details

NPI 1558459651
Specialty Psychiatric/Mental Health Nurse Practitioner
Credentials PSY-MH N.P.
Gender Female
NPI Issued 10/11/2006

Medicare Part D Prescribing Data

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

216
Total Claims
$9K
Total Drug Cost
39
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
371
Total Day Supply
11,014
Generic Drug Cost
$6K

Patient Demographics

Average Patient Age
67.0 years
Avg HCC Risk Score
0.86

Top Prescribed Drugs (Medicare Part D)

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

What MICHELLE ONACKI, PSY-MH N.P. 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
Bupropion Xl
Bupropion Hcl
28
Alprazolam
19
Clonazepam
13
Citalopram Hbr
Citalopram Hydrobromide
12
Escitalopram Oxalate
12
Zolpidem Tartrate
12
Aripiprazole
11
Trazodone Hcl
11

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

Psychiatric/Mental Health Nurse Practitioner Overview

How MICHELLE ONACKI, PSY-MH N.P. fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.

39,953
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider

MICHELLE ONACKI, PSY-MH N.P.'s 216 claims are below the specialty average of 927.

Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Arizona

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

Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHELLE ONACKI, PSY-MH N.P.'s specialty?
MICHELLE ONACKI, PSY-MH N.P. specializes in Psychiatric/Mental Health Nurse Practitioner and practices in TEMPE, Arizona. Credentials: PSY-MH N.P..
How much does MICHELLE ONACKI, PSY-MH N.P. prescribe under Medicare Part D?
In 2023, MICHELLE ONACKI, PSY-MH N.P. wrote 216 Medicare Part D claims totaling $9K in drug costs for 39 beneficiaries.
Where is MICHELLE ONACKI, PSY-MH N.P. located?
MICHELLE ONACKI, PSY-MH N.P. is located at 4015 S MCCLINTOCK DR, TEMPE, AZ, 85282. Phone: (480) 775-8811.
What is MICHELLE ONACKI, PSY-MH N.P.'s NPI number?
MICHELLE ONACKI, PSY-MH N.P.'s National Provider Identifier (NPI) is 1558459651, issued on 10/11/2006.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US?
There are 39,953 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 927 Medicare Part D claims per year.
What drugs does MICHELLE ONACKI, PSY-MH N.P. prescribe most often?
Based on 2023 Medicare Part D data, MICHELLE ONACKI, PSY-MH N.P.'s most frequently prescribed drugs include Bupropion Xl, Alprazolam, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHELLE ONACKI, PSY-MH N.P. accept Medicare?
MICHELLE ONACKI, PSY-MH N.P. appears in CMS Medicare data with 216 Part D claims and 39 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHELLE ONACKI, PSY-MH N.P.'s credentials?
MICHELLE ONACKI, PSY-MH N.P.'s NPI is 1558459651 with credentials PSY-MH N.P.. 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