2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1184136590 APRN
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ADAM MIKIEWICZ, APRN

Psychiatric/Mental Health Nurse Practitioner in ROCKY HILL, Connecticut. 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
867
Medicare Part D claims · 34 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$640.21
6 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ADAM MIKIEWICZ, APRN filed 867 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in ROCKY HILL, Connecticut, prescribing 91% generic.

867
Part D claims, 2023
91%
generic prescribing
$640.21
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.

ADAM MIKIEWICZ, APRN's Medicare Part D volume vs every U.S. prescriber

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

867 Top 27% higher than 73% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 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 ADAM MIKIEWICZ, APRN?

Quality data not reported

NPI registry status

Active

Issued 10/26/2017

NPI 1184136590

Primary specialty

Psychiatric/Mental Health Nurse Practitioner

Mid-sized

39,953 US NPIs in this specialty

Medicare Part D claims

867 6% vs specialty avg

2023 prescription claims

Specialty avg: 927

Specialty distribution in Connecticut

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

Connecticut providers

Psychiatric/Mental Health Nurse Practitioner share within Connecticut

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

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).

ADAM MIKIEWICZ, APRN appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding APRN credentials at 800 OLD MAIN ST STE 1A, ROCKY HILL, CT, 06067, with a listed phone of (860) 478-6425. NPI 1184136590 was issued on 10/26/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MIKIEWICZ 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 867 prescription claims written by this provider, covering 34 Medicare beneficiaries and totaling roughly $140K in drug spend, split 9% brand-name and 91% 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.

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

800 OLD MAIN ST STE 1A
ROCKY HILL, CT 06067

Provider Details

NPI 1184136590
Specialty Psychiatric/Mental Health Nurse Practitioner
Credentials APRN
Gender Male
NPI Issued 10/26/2017

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 ADAM MIKIEWICZ, APRN. Source: openpaymentsdata.cms.gov.

Total received

$640

Largest payer

Neurocrine Biosciences, 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

ADAM MIKIEWICZ, APRN — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 867 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.

867
Total Claims
$140K
Total Drug Cost
34
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
889
Total Day Supply
25,282
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$79K
Generic Drug Cost
$61K

Patient Demographics

Average Patient Age
51.1 years
Avg HCC Risk Score
1.12
Gender Split
35% female / 65% male

Top Prescribed Drugs (Medicare Part D)

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

What ADAM MIKIEWICZ, APRN 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
Olanzapine Odt
Olanzapine
44
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
41
Clonazepam
38
Buspirone Hcl
37
Lamotrigine
37
Gabapentin
35
Clozapine
30
Naloxone Hcl
28
Chlorpromazine Hcl
26
Perphenazine
25

* 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 ADAM MIKIEWICZ, APRN 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

ADAM MIKIEWICZ, APRN's 867 claims are below the specialty average of 927.

Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Connecticut

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

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

Frequently Asked Questions

What is ADAM MIKIEWICZ, APRN's specialty?
ADAM MIKIEWICZ, APRN specializes in Psychiatric/Mental Health Nurse Practitioner and practices in ROCKY HILL, Connecticut. Credentials: APRN.
How much does ADAM MIKIEWICZ, APRN prescribe under Medicare Part D?
In 2023, ADAM MIKIEWICZ, APRN wrote 867 Medicare Part D claims totaling $140K in drug costs for 34 beneficiaries.
Where is ADAM MIKIEWICZ, APRN located?
ADAM MIKIEWICZ, APRN is located at 800 OLD MAIN ST STE 1A, ROCKY HILL, CT, 06067. Phone: (860) 478-6425.
What is ADAM MIKIEWICZ, APRN's NPI number?
ADAM MIKIEWICZ, APRN's National Provider Identifier (NPI) is 1184136590, issued on 10/26/2017.
Does ADAM MIKIEWICZ, APRN prescribe more brand-name or generic drugs?
ADAM MIKIEWICZ, APRN's prescribing is 9% brand-name and 91% generic drugs by claim count, with $79K in brand drug costs.
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 ADAM MIKIEWICZ, APRN prescribe most often?
Based on 2023 Medicare Part D data, ADAM MIKIEWICZ, APRN's most frequently prescribed drugs include Olanzapine Odt, Buprenorphine-Naloxone, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ADAM MIKIEWICZ, APRN accept Medicare?
ADAM MIKIEWICZ, APRN appears in CMS Medicare data with 867 Part D claims and 34 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ADAM MIKIEWICZ, APRN's credentials?
ADAM MIKIEWICZ, APRN's NPI is 1184136590 with credentials APRN. 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