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2026 NPPES data Registered Nurse NPI 1164876645
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Krystal Greeson

Registered Nurse in Chandler, 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 185,440 in Registered Nurse, 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
197
Medicare Part D claims · 27 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
33%
generic claims · 42% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
87/100
▲ 3 pts above national avg 83.5 · Above neutral
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Krystal Greeson reported a CMS MIPS final score of 87/100 - above the 83.5 national average - and filed 197 Medicare Part D claims in 2024.

87/100
MIPS score · +3 vs avg
197
Part D claims, 2024
33%
generic prescribing
≥49th
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 Krystal Greeson

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 1164876645), first enumerated 04/20/2016.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 197 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 87/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • 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.

Compare Greeson with other Registered Nurse providers

Same primary specialty, same federal CMS NPPES roster.

All 101 Registered Nurse providers in Chandler, AZ →

Also enrolled in Arizona

Other specialties in Chandler: Behavior Technician (705) · Pharmacist (328) · Physical Therapist (242) · Family Nurse Practitioner (213)

CMS NPPES provider registry desk

NPI 1164876645 · Registered Nurse

NPI-10 · ENUM-MID · TAX-MEGA · MIPS-ABOVE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1164876645
  • ENUM-MID 2016
  • TAX-MEGA 185K Registered Nurse
  • MIPS-ABOVE 87/100
  • RX-LIGHT 197
  • BOOK-LIGHT 3,958 in Arizona
  • PHOTO-FINISH Marsha Di Peppe, FNP… · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Krystal Greeson'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.

87 ≥ 49th percentile 49% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). This entry sits in this band. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

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 Krystal Greeson sits

This provider among registered nurse peers

Across the 3,271 registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Krystal Greeson writes more Part D claims than 38% of them and scores higher on MIPS quality than 53% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 20Krystal Greeson, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 53
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one registered nurse peer from a representative sample of 60; the gold marker is Krystal Greeson. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Krystal Greeson?

High performer (top quartile)

NPI registry status

Active

Issued 04/20/2016

NPI 1164876645

Primary specialty

Registered Nurse

High-volume

185,440 US NPIs in this specialty

Medicare Part D claims

197 81% vs specialty avg

2024 prescription claims

Specialty avg: 1,063

MIPS final score

87/100 3.5 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Arizona

How Registered Nurse compares to other specialties among Arizona providers

Arizona providers
Behavior Technician6%Pharmacist5.4%Family Nurse Practitioner4.3%Physical Therapist4.1%Student in an Organized Heal…3.6%Speech-Language Pathologist3.5%Registered Nurse3.1%
Largest specialties in Arizona (% of in-state providers)

Medicare quality performance, MIPS

Krystal Greeson's 2023 MIPS final score plotted against the Registered Nurse national average

High performer (top quartile)
MIPS Final Score
87/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%87%
MIPS final score (Registered Nurse) - 87/100 vs national avg 83.5
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

4254 W ORCHID LN
Chandler, AZ 85226
(888) 731-8994

Provider Details

NPI 1164876645
Specialty Registered Nurse
Gender Female
NPI Issued 04/20/2016

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

86.9932
Final Score
Measured-score avg: 83.5
79.3582
Quality
53.9524
Cost
88
Promoting Interoperability

Reporting: Group practice

Brand vs generic prescribing mix · Above average

Krystal Greeson - brand share 42.0%
Registered Nurse average

42% brand-name claims vs 33% generic, on 197 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.

197
Total Claims
$46K
Total Drug Cost
27
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
247.267
Total Day Supply
7,044
Brand vs Generic
42% brand / 33% generic
Brand Drug Cost
$43K
Generic Drug Cost
$687

Patient Demographics

Average Patient Age
65.6 years
Avg HCC Risk Score
1.56

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Krystal Greeson prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Ozempic
Semaglutide
23
Lantus Solostar
Insulin Glargine,hum.Rec.Anlog
14
Atorvastatin Calcium
 13
Janumet Xr
Sitagliptin Phos/Metformin Hcl
11
Metformin Hcl Er
Metformin Hcl
11

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

More Registered Nurse in AZ → All providers in Arizona → Compare specialties →

Registered Nurse Overview

How Krystal Greeson fits within the Registered Nurse landscape nationally.

185,440
Registered Nurse Providers in US
56
States with Registered Nurse
1,063
Avg Claims per Provider

Krystal Greeson's 197 claims are below the specialty average of 1,063.

Nationwide Registered Nurse peers with similar MIPS or enrollment year

Two federal-record peer sets for Greeson, both outside Arizona so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (87 here).

Marsha Di Peppe 87 VA Jolly Anne Uclaray 87 HI Elizabeth Burbage 87.1 MA Chelsie McCarthy 87.1 MA

Same NPPES enumeration year (2016)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Rika Dombrowski Oregon, WI Viktoriya Gorbach New York, NY Bobi Tallman Pendleton, OR Myung Hee Yoon New Brunswick, NJ

Nearby Registered Nurse Providers in Arizona

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

One of 3,958 Registered Nurse providers enrolled in Arizona, 11 are shown on this page.

Yeshiwork Abebe
RN
Mesa, AZ
Alyssa Abegg-Garcia
ARNP
Gilbert, AZ
Brian Abel
Scottsdale, AZ
Deirdre Abellada
RN, PHN
Phoenix, AZ
Jennifer Aboud
RN
Phoenix, AZ

Compare Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is Krystal Greeson's specialty? ▼
Krystal Greeson specializes in Registered Nurse and practices in Chandler, Arizona.
How much does Krystal Greeson prescribe under Medicare Part D? ▼
In 2024, Krystal Greeson wrote 197 Medicare Part D claims totaling $46K in drug costs for 27 beneficiaries.
What is Krystal Greeson's Medicare quality score? ▼
Krystal Greeson has a CMS MIPS Final Score of 87/100 (Quality: 79.4, Cost: 54). 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 Krystal Greeson located? ▼
Krystal Greeson is located at 4254 W ORCHID LN, Chandler, AZ, 85226. Phone: (888) 731-8994.
What is Krystal Greeson's NPI number? ▼
Krystal Greeson's National Provider Identifier (NPI) is 1164876645, issued on 04/20/2016.
Does Krystal Greeson prescribe more brand-name or generic drugs? ▼
Krystal Greeson's prescribing is 42% brand-name and 33% generic drugs by claim count, with $43K in brand drug costs.
How many Registered Nurse providers are there in the US? ▼
There are 185,440 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,063 Medicare Part D claims per year.
What drugs does Krystal Greeson prescribe most often? ▼
Based on 2024 Medicare Part D data, Krystal Greeson's most frequently prescribed drugs include Ozempic, Lantus Solostar, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Krystal Greeson accept Medicare? ▼
Krystal Greeson appears in CMS Medicare data with 197 Part D claims and 27 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Krystal Greeson's credentials? ▼
Krystal Greeson's NPI is 1164876645. 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

Compiled from official public sources by the editorial process.

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.