2026 NPPES data Physician Assistant NPI 1073993556 PA
Verify on CMS →

Phillip Spencer, PA

Physician Assistant in Sun City, 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 149,975 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
153
Medicare Part D claims · 79 beneficiaries · Physician Assistant avg: 790
MIPS score
81.5/100
▼ 2 pts below national avg 83.1 · Above neutral
Industry payments
$155.36
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Phillip Spencer, PA reported a CMS MIPS final score of 81.5/100 - below the 83.1 national average - and filed 153 Medicare Part D claims in 2023.

81.5/100
MIPS score · -2 vs avg
153
Part D claims, 2023
$155.36
industry payments (Sunshine Act)

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.

Phillip Spencer, PA's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

82 36th percentile higher than 36% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Phillip Spencer, PA sits

This provider among physician assistant peers

Across the 27,054 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Phillip Spencer, PA writes more Part D claims than 37% of them and scores higher on MIPS quality than 35% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 40Phillip Spencer, PA-Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 35
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 Phillip Spencer, PA. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Phillip Spencer, PA?

Near national average

NPI registry status

Active

Issued 06/01/2015

NPI 1073993556

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

153 81% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

81.5/100 1.6 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Arizona

How Physician Assistant compares to other specialties among Arizona providers

Arizona providers

Largest specialties in Arizona (% of in-state providers)

Pharmacist - 5.6%Pharmacist5.6%Behavior Technician - 5.6%Behavior Technician5.6%Family Nurse Practitioner - 4.3%Family Nurse Practitioner4.3%Physical Therapist - 4.2%Physical Therapist4.2%Speech-Language Pathologist - 3.5%Speech-Language Pathologist3.5%Student in an Organized Health Care Education/Training Program - 3.5%Student in an Organized Health Care Education/Training Program3.5%Physician Assistant - 2.7%Physician Assistant2.7%
Largest specialties in Arizona (% of in-state providers)

Medicare quality performance, MIPS

Phillip Spencer, PA's 2023 MIPS final score plotted against the Physician Assistant national average

Near national average
MIPS Final Score
81.5/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) - 81.5/100 vs national avg 83.1

0%100%National avg83%81.5%
MIPS final score (Physician Assistant) - 81.5/100 vs national avg 83.1

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).

Phillip Spencer, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 10401 W. THUNDERBIRD BLVD, Sun City, AZ, 85351, with a listed phone of (623) 977-7211. NPI 1073993556 was issued on 06/01/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Spencer most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 153 prescription claims written by this provider, covering 79 Medicare beneficiaries and totaling roughly $1K in drug spend, with an opioid prescribing rate of 47.1%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.5/100 for the 2023 performance year, compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

10401 W. THUNDERBIRD BLVD
Sun City, AZ 85351

Provider Details

NPI 1073993556
Specialty Physician Assistant
Credentials PA
Gender Male
NPI Issued 06/01/2015

CMS Quality Score (MIPS)

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

81.4923
Final Score
Avg: 83.1
38.3075
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Phillip Spencer, PA 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.

Banner Cancer Center Specialists LLC
Sun City, 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).

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 Phillip Spencer, PA. Source: openpaymentsdata.cms.gov.

Total received

$155

Largest payer

Davol Inc.

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

153
Total Claims
$1K
Total Drug Cost
79
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
153
Total Day Supply
1,366
Generic Drug Cost
$1K
Opioid Claims
72 (47.1% rate)

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
1.50
Gender Split
68% female / 32% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Phillip Spencer, PA prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Tramadol Hcl
63
Gabapentin
43
Ondansetron Odt
Ondansetron
17

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

Physician Assistant Overview

How Phillip Spencer, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

Phillip Spencer, PA's 153 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Arizona

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

Compare Physician Assistant 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 Physician Assistant 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.

Frequently Asked Questions

What is Phillip Spencer, PA's specialty?
Phillip Spencer, PA specializes in Physician Assistant and practices in Sun City, Arizona. Credentials: PA.
How much does Phillip Spencer, PA prescribe under Medicare Part D?
In 2023, Phillip Spencer, PA wrote 153 Medicare Part D claims totaling $1K in drug costs for 79 beneficiaries.
What is Phillip Spencer, PA's Medicare quality score?
Phillip Spencer, PA has a CMS MIPS Final Score of 81.5/100, Cost: 38.3. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Phillip Spencer, PA located?
Phillip Spencer, PA is located at 10401 W. THUNDERBIRD BLVD, Sun City, AZ, 85351. Phone: (623) 977-7211.
What is Phillip Spencer, PA's NPI number?
Phillip Spencer, PA's National Provider Identifier (NPI) is 1073993556, issued on 06/01/2015.
Does Phillip Spencer, PA prescribe opioids?
Yes, Phillip Spencer, PA had 72 opioid claims in 2023 with an opioid prescribing rate of 47.1%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Phillip Spencer, PA prescribe most often?
Based on 2023 Medicare Part D data, Phillip Spencer, PA's most frequently prescribed drugs include Tramadol Hcl, Gabapentin, Ondansetron Odt. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Phillip Spencer, PA accept Medicare?
Phillip Spencer, PA appears in CMS Medicare data with 153 Part D claims and 79 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Phillip Spencer, PA's credentials?
Phillip Spencer, PA's NPI is 1073993556 with credentials PA. 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

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.
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 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

Compiled from official public sources by the PlainDoctor editorial team.