NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1427679885 MSN, APRN, PMHNP-BC
Verify on CMS → Darlene Heimmer, MSN, APRN, PMHNP-BC
Psychiatric/Mental Health Nurse Practitioner in Surprise, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,776 in Psychiatric/Mental Health Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
210
Medicare Part D claims · 21 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Darlene Heimmer, MSN, APRN, PMHNP-BC filed 210 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in Surprise, Arizona.
- 210
- Part D claims, 2023
- ≥49th
- pct by Part D claim volume (lower-bound band)
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.
Darlene Heimmer, MSN, APRN, PMHNP-BC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
210 ≥ 49th percentile 49% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Darlene Heimmer, MSN, APRN, PMHNP-BC?
Quality data not reportedPrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
210 77% vs specialty avg
Specialty distribution in Arizona
How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Arizona providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Psychiatric/Mental Health Nurse Practitioner. Verify directly:
How MIPS and board certification work
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).
Darlene Heimmer, MSN, APRN, PMHNP-BC appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding MSN, APRN, PMHNP-BC credentials at 14365 W GREER ST, Surprise, AZ, 85379, with a listed phone of (623) 236-0084. NPI 1427679885 was issued on 04/27/2020.
Medicare Part D records for calendar year 2023 show 210 prescription claims written by this provider, covering 21 Medicare beneficiaries and totaling roughly $8K in drug spend.
Psychiatric/Mental Health Nurse Practitioner is a mid-sized specialty nationwide, with 40,776 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
Provider Details
| NPI | 1427679885 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Credentials | MSN, APRN, PMHNP-BC |
| Gender | Female |
| NPI Issued | 04/27/2020 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
210
Total Claims
$8K
Total Drug Cost
21
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 516
- Total Day Supply
- 15,454
- Brand Drug Cost
- $0
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.33
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Darlene Heimmer, MSN, APRN, PMHNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Escitalopram Oxalate
Escitalopram Oxalate
35 claims
- Trazodone Hcl
Trazodone Hcl
23 claims
- Clonazepam
Clonazepam
16 claims
- Alprazolam
Alprazolam
14 claims
- Lamotrigine Er
Lamotrigine Er
14 claims
- Zolpidem Tartrate
Zolpidem Tartrate
14 claims
- Lamotrigine 11
Lamotrigine
11 claims
| Drug | Claims |
|---|---|
| Escitalopram Oxalate | 35 |
| Trazodone Hcl | 23 |
| Clonazepam | 16 |
| Alprazolam | 14 |
| Lamotrigine Er Lamotrigine | 14 |
| Zolpidem Tartrate | 14 |
| Lamotrigine | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Psychiatric/Mental Health Nurse Practitioner in AZ →
All providers in Arizona →
Compare specialties →
Psychiatric/Mental Health Nurse Practitioner Overview
How Darlene Heimmer, MSN, APRN, PMHNP-BC fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.
40,776
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider
Darlene Heimmer, MSN, APRN, PMHNP-BC's 210 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 Heimmer.
Dr. Stella Abaaba
PMHNP-BC
Phoenix, AZ
Dr. Kamani Abarikwu
PMHNP-BC
Prescott, AZ
Dr. Abraham Abegunde
APRN (PMHNP)
Fort Defiance, AZ
Dr. Jill Abernathy-Wilke
PMHNP
Chandler, AZ
Dr. Doyinsola Abikoye
NP
Phoenix, AZ
Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Arizona medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Psychiatric/Mental Health Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Darlene Heimmer, MSN, APRN, PMHNP-BC's specialty? ▼
Darlene Heimmer, MSN, APRN, PMHNP-BC specializes in Psychiatric/Mental Health Nurse Practitioner and practices in Surprise, Arizona. Credentials: MSN, APRN, PMHNP-BC.
How much does Darlene Heimmer, MSN, APRN, PMHNP-BC prescribe under Medicare Part D? ▼
In 2023, Darlene Heimmer, MSN, APRN, PMHNP-BC wrote 210 Medicare Part D claims totaling $8K in drug costs for 21 beneficiaries.
Where is Darlene Heimmer, MSN, APRN, PMHNP-BC located? ▼
Darlene Heimmer, MSN, APRN, PMHNP-BC is located at 14365 W GREER ST, Surprise, AZ, 85379. Phone: (623) 236-0084.
What is Darlene Heimmer, MSN, APRN, PMHNP-BC's NPI number? ▼
Darlene Heimmer, MSN, APRN, PMHNP-BC's National Provider Identifier (NPI) is 1427679885, issued on 04/27/2020.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US? ▼
There are 40,776 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 Darlene Heimmer, MSN, APRN, PMHNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Darlene Heimmer, MSN, APRN, PMHNP-BC's most frequently prescribed drugs include Escitalopram Oxalate, Trazodone Hcl, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Darlene Heimmer, MSN, APRN, PMHNP-BC accept Medicare? ▼
Darlene Heimmer, MSN, APRN, PMHNP-BC appears in CMS Medicare data with 210 Part D claims and 21 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Darlene Heimmer, MSN, APRN, PMHNP-BC's credentials? ▼
Darlene Heimmer, MSN, APRN, PMHNP-BC's NPI is 1427679885 with credentials MSN, APRN, PMHNP-BC. 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.