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2026 NPPES data Physician Assistant NPI 1598218869
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Serena Kolofer

Physician Assistant in Scottsdale, 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 156,084 in Physician Assistant, 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
71
Medicare Part D claims · 62 beneficiaries · Physician Assistant avg: 832
MIPS score
75.6/100
▼ 8 pts below 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

Serena Kolofer reported a CMS MIPS final score of 75.6/100 - below the 83.5 national average - and filed 71 Medicare Part D claims in 2024.

75.6/100
MIPS score · -8 vs avg
71
Part D claims, 2024
≥15th
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 Serena Kolofer

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 1598218869), first enumerated 08/03/2016.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 71 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 75.6/100 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 1598218869 · Physician Assistant

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

  • NPI-10 1598218869
  • ENUM-MID 2016
  • TAX-MEGA 156K Physician Assistant
  • MIPS-BELOW 75.6/100
  • RX-TRACE 71
  • BOOK-LIGHT 3,428 in Arizona
  • PHOTO-FINISH Nicolle Renfro · ±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

Serena Kolofer'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.

76 ≥ 15th percentile 15% 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%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 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 Serena Kolofer sits

This provider among physician assistant peers

Across the 26,497 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Serena Kolofer writes more Part D claims than 19% of them and scores higher on MIPS quality than 13% - placing this provider in the lower-volume, lower-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: 38 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 67Serena Kolofer, Part D claim volume, percentile in specialty: 19 · MIPS quality, percentile: 13
Part D claim volume vs MIPS quality, by specialty percentile

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

What does the federal data show about Serena Kolofer?

Below national average

NPI registry status

Active

Issued 08/03/2016

NPI 1598218869

Primary specialty

Physician Assistant

High-volume

156,084 US NPIs in this specialty

Medicare Part D claims

71 91% vs specialty avg

2024 prescription claims

Specialty avg: 832

MIPS final score

75.6/100 7.9 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Arizona

How Physician Assistant 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%Physician Assistant2.7%
Largest specialties in Arizona (% of in-state providers)

Medicare quality performance, MIPS

Serena Kolofer's 2023 MIPS final score plotted against the Physician Assistant national average

Below national average
MIPS Final Score
75.6/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%75.6%
MIPS final score (Physician Assistant) - 75.6/100 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

9060 E VIA LINDA STE 250
Scottsdale, AZ 85258
(480) 545-2787

Provider Details

NPI 1598218869
Specialty Physician Assistant
Gender Female
NPI Issued 08/03/2016

CMS Quality Score (MIPS)

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

75.5648
Final Score
Measured-score avg: 83.5
73.9673
Quality
44.582
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Serena Kolofer 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.

Honorhealth Urgent Care LLC
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).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2024.

71
Total Claims
$639
Total Drug Cost
62
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
71.667
Total Day Supply
628
Generic Drug Cost
$455
Antibiotic Claims
40

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
1.22
Gender Split
65% female / 35% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
15

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

More Physician Assistant in AZ → All providers in Arizona → Compare specialties →

Physician Assistant Overview

How Serena Kolofer fits within the Physician Assistant landscape nationally.

156,084
Physician Assistant Providers in US
56
States with Physician Assistant
832
Avg Claims per Provider

Serena Kolofer's 71 claims are below the specialty average of 832.

Nationwide Physician Assistant peers with similar MIPS or enrollment year

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

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (75.6 here).

Nicolle Renfro 75.6 OR Daniella Benson 75.6 DE Jessica Borderieux 75.6 PA Alexandra Krochta 75.6 DE

Same NPPES enumeration year (2016)

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

Lauren Phillips Chicopee, MA Annelie Roding Bethesda, MD Casey Cocuzza Jersey City, NJ Jessica Lassen Round Rock, TX

Nearby Physician Assistant Providers in Arizona

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

One of 3,428 Physician Assistant providers enrolled in Arizona, 5 are shown here.

Lindsey Abajian
PA-C
Phoenix, AZ
Allison Abbey
PA-C
Cottonwood, AZ
Carley Abbott
PA-C
Chandler, AZ
Delmas Abbott
PA-C
Prescott, AZ
Sarah Abbott
PA
Phoenix, AZ

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is Serena Kolofer's specialty? ▼
Serena Kolofer specializes in Physician Assistant and practices in Scottsdale, Arizona.
How much does Serena Kolofer prescribe under Medicare Part D? ▼
In 2024, Serena Kolofer wrote 71 Medicare Part D claims totaling $639 in drug costs for 62 beneficiaries.
What is Serena Kolofer's Medicare quality score? ▼
Serena Kolofer has a CMS MIPS Final Score of 75.6/100 (Quality: 74, Cost: 44.6). 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 Serena Kolofer located? ▼
Serena Kolofer is located at 9060 E VIA LINDA STE 250, Scottsdale, AZ, 85258. Phone: (480) 545-2787.
What is Serena Kolofer's NPI number? ▼
Serena Kolofer's National Provider Identifier (NPI) is 1598218869, issued on 08/03/2016.
How many Physician Assistant providers are there in the US? ▼
There are 156,084 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 832 Medicare Part D claims per year.
What drugs does Serena Kolofer prescribe most often? ▼
Based on 2024 Medicare Part D data, Serena Kolofer's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Serena Kolofer accept Medicare? ▼
Serena Kolofer appears in CMS Medicare data with 71 Part D claims and 62 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Serena Kolofer's credentials? ▼
Serena Kolofer's NPI is 1598218869. 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.