NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1093935538
Verify on CMS → Quentin Shambley
Psychiatric/Mental Health Nurse Practitioner in Phoenix, 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 44,928 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
601
Medicare Part D claims · 66 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 895
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
22.8/100
▼ 61 pts below national avg 83.5 · Below average
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Quentin Shambley reported a CMS MIPS final score of 22.8/100 - below the 83.5 national average - and filed 601 Medicare Part D claims in 2024.
- 22.8/100
- MIPS score · -61 vs avg
- 601
- Part D claims, 2024
- 97%
- generic prescribing
- ≥3rd
- pct among measured MIPS (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 Quentin Shambley
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1093935538), first enumerated 04/26/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 601 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 22.8/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1093935538 · Psychiatric/Mental Health Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MID · MIPS-LOW · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1093935538
- ENUM-MID 2007
- TAX-MID 45K Psychiatric/Mental Health
- MIPS-LOW 22.8/100
- RX-LIGHT 601
- BOOK-LIGHT 1,505 in Arizona
- PHOTO-FINISH Shanna Shackelford · ±0.5
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Shambley · this …
Shambley · this provider
22.8 MIPS pts
- Shanna Shackelfo…
Shanna Shackelford
23.3 MIPS pts
- Dawn Michael · n…
Dawn Michael
23.6 MIPS pts
- Anna Cook · near
Anna Cook
24.3 MIPS pts
- Rene Phillippe ·…
Rene Phillippe
25 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Quentin Shambley's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
23 ≥ 3rd percentile 3% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Quentin Shambley sits
This provider among psychiatric/mental health nurse practitioner peers
Across the 1,808 psychiatric/mental health nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Quentin Shambley writes more Part D claims than 52% of them and scores higher on MIPS quality than 2% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one psychiatric/mental health nurse practitioner peer from a representative sample of 60; the gold marker is Quentin Shambley. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Quentin Shambley?
Below national averagePrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
601 33% vs specialty avg
MIPS final score
22.8/100 60.7 pts vs avg
Specialty distribution in Arizona
How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Arizona providers
Medicare quality performance, MIPS
Quentin Shambley's 2023 MIPS final score plotted against the Psychiatric/Mental Health Nurse Practitioner national average
- MIPS Final Score
- 22.8/100
- vs 83.5 national avg · 2023 performance year
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 | 1093935538 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Gender | Male |
| NPI Issued | 04/26/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
22.8246
Final Score
Measured-score avg: 83.5
0
Quality
76.0819
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Quentin Shambley 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.
Peace OF Mind Consultants PLLC
Phoenix, AZ
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Quentin Shambley - brand share 3.0%
Psychiatric/Mental Health Nurse Practitioner average
3% brand-name claims vs 97% generic, on 601 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.
601
Total Claims
$120K
Total Drug Cost
66
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 601
- Total Day Supply
- 16,287
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $99K
- Generic Drug Cost
- $22K
Patient Demographics
- Average Patient Age
- 70.5 years
- Avg HCC Risk Score
- 2.46
- Gender Split
- 39% female / 61% male
- Age Distribution
- <65: 13, 65-74: 30, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Quentin Shambley prescribes most
Top Medicare Part D drugs by claim count, 2024
- Trazodone Hcl
Trazodone Hcl
84 claims
- Donepezil Hcl
Donepezil Hcl
50 claims
- Olanzapine 32
Olanzapine
32 claims
- Lorazepam 29
Lorazepam
29 claims
- Risperidone 28
Risperidone
28 claims
- Divalproex Sodium 26
Divalproex Sodium
26 claims
- Lurasidone Hcl 24
Lurasidone Hcl
24 claims
- Clonazepam 23
Clonazepam
23 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 84 |
| Donepezil Hcl | 50 |
| Olanzapine | 32 |
| Lorazepam | 29 |
| Risperidone | 28 |
| Divalproex Sodium | 26 |
| Lurasidone Hcl | 24 |
| Clonazepam | 23 |
| Duloxetine Hcl | 23 |
| Sertraline Hcl | 23 |
* 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 Quentin Shambley fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.
44,928
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
895
Avg Claims per Provider
Quentin Shambley's 601 claims are below the specialty average of 895.
Nationwide Psychiatric/Mental Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Shambley, both outside Arizona so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (22.8 here).
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Shambley.
One of 1,505 Psychiatric/Mental Health Nurse Practitioner providers enrolled in Arizona, 5 are shown here.
Stella Abaaba
PMHNP-BC
Phoenix, AZ
Kamani Abarikwu
PMHNP-BC
Prescott, AZ
Jill Abernathy-Wilke
PMHNP
Chandler, AZ
Doyinsola Abikoye
NP
Phoenix, AZ
Ghassan Abuelian
PMHNP
Scottsdale, AZ
Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Quentin Shambley's specialty? ▼
Quentin Shambley specializes in Psychiatric/Mental Health Nurse Practitioner and practices in Phoenix, Arizona.
How much does Quentin Shambley prescribe under Medicare Part D? ▼
In 2024, Quentin Shambley wrote 601 Medicare Part D claims totaling $120K in drug costs for 66 beneficiaries.
What is Quentin Shambley's Medicare quality score? ▼
Quentin Shambley has a CMS MIPS Final Score of 22.8/100 (Quality: 0, Cost: 76.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Quentin Shambley located? ▼
Quentin Shambley is located at 3227 E BELL RD, Phoenix, AZ, 85032. Phone: (602) 652-3500.
What is Quentin Shambley's NPI number? ▼
Quentin Shambley's National Provider Identifier (NPI) is 1093935538, issued on 04/26/2007.
Does Quentin Shambley prescribe more brand-name or generic drugs? ▼
Quentin Shambley's prescribing is 3% brand-name and 97% generic drugs by claim count, with $99K in brand drug costs.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US? ▼
There are 44,928 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 895 Medicare Part D claims per year.
What drugs does Quentin Shambley prescribe most often? ▼
Based on 2024 Medicare Part D data, Quentin Shambley's most frequently prescribed drugs include Trazodone Hcl, Donepezil Hcl, Olanzapine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Quentin Shambley accept Medicare? ▼
Quentin Shambley appears in CMS Medicare data with 601 Part D claims and 66 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Quentin Shambley's credentials? ▼
Quentin Shambley's NPI is 1093935538. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.