2026 NPPES data Medical Physician Assistant NPI 1588047518 PA-C
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GEOFFREY SLATER, PA-C

Medical Physician Assistant in ARVADA, Colorado. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 164 beneficiaries · Medical Physician Assistant avg: 1K
MIPS score
83.3532/100
▲ 0 pts above national avg 83.1 · [object Object]

What the federal data shows

GEOFFREY SLATER, PA-C reported a CMS MIPS final score of 83.3532/100 — above the 83.1 national average — and filed 1,298 Medicare Part D claims in 2023.

83.3532/100
MIPS score · +0 vs avg
1K
Part D claims, 2023

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.

GEOFFREY SLATER, PA-C's MIPS score vs every scored U.S. clinician

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

83 42nd percentile higher than 42% 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. 90–100: 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

What does the federal data show about GEOFFREY SLATER, PA-C?

Near national average

NPI registry status

Active

Issued 07/08/2015

NPI 1588047518

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

1,298 21% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

MIPS final score

83.3532/100 0.25320000000000675% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Colorado

How Medical Physician Assistant compares to other specialties among Colorado providers

Colorado providers

Medical Physician Assistant share within Colorado

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Colorado

Medicare quality performance — MIPS

GEOFFREY SLATER, PA-C's 2023 MIPS final score plotted against the Medical Physician Assistant national average

Near national average
MIPS Final Score
83.3532/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Physician Assistant) — 83.3532/100 vs national avg 83.1

0%100%National avg83%83.4%
MIPS final score (Medical Physician Assistant) — 83.3532/100 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).

GEOFFREY SLATER, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 12650 W 64TH AVE UNIT E501, ARVADA, CO, 80004, with a listed phone of (303) 431-4127. NPI 1588047518 was issued on 07/08/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SLATER 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 1,298 prescription claims written by this provider, covering 164 Medicare beneficiaries and totaling roughly $104K in drug spend, with an opioid prescribing rate of 9.4%. 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 83.3532/100 for the 2023 performance year (Quality 88.4391, Cost 40.4783), compared with the national average of 83.1.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

12650 W 64TH AVE UNIT E501
ARVADA, CO 80004

Provider Details

NPI 1588047518
Specialty Medical Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 07/08/2015

CMS Quality Score (MIPS)

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

83.3532
Final Score
Avg: 83.1
88.4391
Quality
40.4783
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where GEOFFREY SLATER, PA-C 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.

LONG TERM CARE AND REHAB CONSULTANTS
WESTMINSTER, CO

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 2023.

1,298
Total Claims
$104K
Total Drug Cost
164
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,313
Total Day Supply
27,989
Generic Drug Cost
$29K
Opioid Claims
122 (9.4% rate)
Antibiotic Claims
29

Patient Demographics

Average Patient Age
78.7 years
Avg HCC Risk Score
2.99
Gender Split
62% female / 38% male

Top Prescribed Drugs (Medicare Part D)

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

What GEOFFREY SLATER, PA-C 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
Levothyroxine Sodium
120
Atorvastatin Calcium
77
Eliquis
Apixaban
56
Oxycodone Hcl
48
Furosemide
47
Sertraline Hcl
43
Amlodipine Besylate
38
Jardiance
Empagliflozin
37
Metoprolol Succinate
34
Potassium Chloride
33

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

Medical Physician Assistant Overview

How GEOFFREY SLATER, PA-C fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

GEOFFREY SLATER, PA-C's 1,298 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Colorado

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

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

Frequently Asked Questions

What is GEOFFREY SLATER, PA-C's specialty?
GEOFFREY SLATER, PA-C specializes in Medical Physician Assistant and practices in ARVADA, Colorado. Credentials: PA-C.
How much does GEOFFREY SLATER, PA-C prescribe under Medicare Part D?
In 2023, GEOFFREY SLATER, PA-C wrote 1,298 Medicare Part D claims totaling $104K in drug costs for 164 beneficiaries.
What is GEOFFREY SLATER, PA-C's Medicare quality score?
GEOFFREY SLATER, PA-C has a CMS MIPS Final Score of 83.3532/100 (Quality: 88.4391, Cost: 40.4783). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GEOFFREY SLATER, PA-C located?
GEOFFREY SLATER, PA-C is located at 12650 W 64TH AVE UNIT E501, ARVADA, CO, 80004. Phone: (303) 431-4127.
What is GEOFFREY SLATER, PA-C's NPI number?
GEOFFREY SLATER, PA-C's National Provider Identifier (NPI) is 1588047518, issued on 07/08/2015.
Does GEOFFREY SLATER, PA-C prescribe opioids?
Yes, GEOFFREY SLATER, PA-C had 122 opioid claims in 2023 with an opioid prescribing rate of 9.4%.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does GEOFFREY SLATER, PA-C prescribe most often?
Based on 2023 Medicare Part D data, GEOFFREY SLATER, PA-C's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GEOFFREY SLATER, PA-C accept Medicare?
GEOFFREY SLATER, PA-C appears in CMS Medicare data with 1,298 Part D claims and 164 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GEOFFREY SLATER, PA-C's credentials?
GEOFFREY SLATER, PA-C's NPI is 1588047518 with credentials PA-C. 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