NPI registry status
Active
2026 NPPES data Adult Psychiatric/Mental Health Clinical Nurse Specialist NPI 1962618686 PHD., MA, APRN BC
Verify on CMS → Margaret Mack, PHD., MA, APRN BC
Adult Psychiatric/Mental Health Clinical Nurse Specialist in Wilmington, Delaware.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 960 in Adult Psychiatric/Mental Health Clinical Nurse Specialist, 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
491
Medicare Part D claims · 40 beneficiaries · Adult Psychiatric/Mental Health Clinical Nurse Specialist avg: 1K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.3K
48 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Margaret Mack, PHD., MA, APRN BC filed 491 Medicare Part D claims in 2024 as an Adult Psychiatric/Mental Health Clinical Nurse Specialist in Wilmington, Delaware, prescribing 96% generic.
- 491
- Part D claims, 2024
- 96%
- generic prescribing
- $1.3K
- industry payments (Sunshine Act)
- ≥61st
- 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.
Federal trust snapshot
What official records show about Margaret Mack, PHD., MA, APRN BC
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1962618686), first enumerated 05/16/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 491 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.3K in reported industry payments (48 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1962618686 · Adult Psychiatric/Mental Health Clinical Nurse Specialist
NPI-10 · ENUM-MID · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1962618686
- ENUM-MID 2007
- TAX-NARROW 960
- RX-LIGHT 491
- BOOK-THIN 8 in Delaware
- PHOTO-ENUM Sharon Baron, MSN, R… · 2007
Margaret Mack, PHD., MA, APRN BC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
491 ≥ 61st percentile 61% of 1,416,883 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 · 2024
What does the federal data show about Margaret Mack, PHD., MA, APRN BC?
Quality data not reportedPrimary specialty
Adult Psychiatric/Mental Health Clinical Nurse Specialist
Medicare Part D claims
491 59% vs specialty avg
Specialty distribution in Delaware
How Adult Psychiatric/Mental Health Clinical Nurse Specialist compares to other specialties among Delaware 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 Adult Psychiatric/Mental Health Clinical Nurse Specialist. 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).
Practice Address
Provider Details
| NPI | 1962618686 |
|---|---|
| Specialty | Adult Psychiatric/Mental Health Clinical Nurse Specialist |
| Credentials | PHD., MA, APRN BC |
| Gender | Female |
| NPI Issued | 05/16/2007 |
Hospital and facility affiliations
Facilities where Margaret Mack, PHD., MA, APRN BC bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Delaware Psychiatry, LLC
Wilmington, DE
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Margaret Mack, PHD., MA, APRN BC. Source: openpaymentsdata.cms.gov.
Total received
$1.3K
Largest payer
Lilly USA, LLC
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
Margaret Mack, PHD., MA, APRN BC - brand share 4.0%
Adult Psychiatric/Mental Health Clinical Nurse Specialist average
4% brand-name claims vs 96% generic, on 491 2024 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 2024.
491
Total Claims
$52K
Total Drug Cost
40
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,062.5
- Total Day Supply
- 31,551
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $42K
- Generic Drug Cost
- $10K
Patient Demographics
- Average Patient Age
- 69.5 years
- Avg HCC Risk Score
- 1.38
- Gender Split
- 70% female / 30% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Margaret Mack, PHD., MA, APRN BC prescribes most
Top Medicare Part D drugs by claim count, 2024
- Lamotrigine
Lamotrigine
55 claims
- Trazodone Hcl
Trazodone Hcl
48 claims
- Buspirone Hcl
Buspirone Hcl
39 claims
- Mirtazapine
Mirtazapine
38 claims
- Quetiapine Fumarate
Quetiapine Fumarate
33 claims
- Bupropion Xl
Bupropion Xl
26 claims
- Sertraline Hcl
Sertraline Hcl
25 claims
- Escitalopram Oxalate 21
Escitalopram Oxalate
21 claims
| Drug | Claims |
|---|---|
| Lamotrigine | 55 |
| Trazodone Hcl | 48 |
| Buspirone Hcl | 39 |
| Mirtazapine | 38 |
| Quetiapine Fumarate | 33 |
| Bupropion Xl Bupropion Hcl | 26 |
| Sertraline Hcl | 25 |
| Escitalopram Oxalate | 21 |
| Lurasidone Hcl | 16 |
| Lithium Carbonate | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Adult Psychiatric/Mental Health Clinical Nurse Specialist in DE →
All providers in Delaware →
Compare specialties →
Adult Psychiatric/Mental Health Clinical Nurse Specialist Overview
How Margaret Mack, PHD., MA, APRN BC fits within the Adult Psychiatric/Mental Health Clinical Nurse Specialist landscape nationally.
960
Adult Psychiatric/Mental Health Clinical Nurse Specialist Providers in US
51
States with Adult Psychiatric/Mental Health Clinical Nurse Specialist
1,206
Avg Claims per Provider
Margaret Mack, PHD., MA, APRN BC's 491 claims are below the specialty average of 1,206.
Nationwide Adult Psychiatric/Mental Health Clinical Nurse Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Mack, both outside Delaware so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Adult Psychiatric/Mental Health Clinical Nurse Specialist Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Mack.
One of 8 Adult Psychiatric/Mental Health Clinical Nurse Specialist providers enrolled in Delaware, 5 are shown here.
Frequently Asked Questions
What is Margaret Mack, PHD., MA, APRN BC's specialty? ▼
Margaret Mack, PHD., MA, APRN BC specializes in Adult Psychiatric/Mental Health Clinical Nurse Specialist and practices in Wilmington, Delaware. Credentials: PHD., MA, APRN BC.
How much does Margaret Mack, PHD., MA, APRN BC prescribe under Medicare Part D? ▼
In 2024, Margaret Mack, PHD., MA, APRN BC wrote 491 Medicare Part D claims totaling $52K in drug costs for 40 beneficiaries.
Where is Margaret Mack, PHD., MA, APRN BC located? ▼
Margaret Mack, PHD., MA, APRN BC is located at 10 GUYENNE RD, Wilmington, DE, 19807. Phone: (302) 530-0358.
What is Margaret Mack, PHD., MA, APRN BC's NPI number? ▼
Margaret Mack, PHD., MA, APRN BC's National Provider Identifier (NPI) is 1962618686, issued on 05/16/2007.
Does Margaret Mack, PHD., MA, APRN BC prescribe more brand-name or generic drugs? ▼
Margaret Mack, PHD., MA, APRN BC's prescribing is 4% brand-name and 96% generic drugs by claim count, with $42K in brand drug costs.
How many Adult Psychiatric/Mental Health Clinical Nurse Specialist providers are there in the US? ▼
There are 960 Adult Psychiatric/Mental Health Clinical Nurse Specialist providers across 51 states in the US. The average Adult Psychiatric/Mental Health Clinical Nurse Specialist provider writes 1,206 Medicare Part D claims per year.
What drugs does Margaret Mack, PHD., MA, APRN BC prescribe most often? ▼
Based on 2024 Medicare Part D data, Margaret Mack, PHD., MA, APRN BC's most frequently prescribed drugs include Lamotrigine, Trazodone Hcl, Buspirone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Margaret Mack, PHD., MA, APRN BC accept Medicare? ▼
Margaret Mack, PHD., MA, APRN BC appears in CMS Medicare data with 491 Part D claims and 40 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Margaret Mack, PHD., MA, APRN BC's credentials? ▼
Margaret Mack, PHD., MA, APRN BC's NPI is 1962618686 with credentials PHD., MA, APRN 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.