2026 NPPES data Physician Assistant NPI 1548448087 PA
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STACY ELLIS, PA

Physician Assistant in NORMAN, Oklahoma. 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
234
Medicare Part D claims · 42 beneficiaries · Physician Assistant avg: 790
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
70.8878/100
▼ 12 pts below national avg 83.1 · [object Object]

What the federal data shows

STACY ELLIS, PA reported a CMS MIPS final score of 70.8878/100 — below the 83.1 national average — and filed 234 Medicare Part D claims in 2023.

70.8878/100
MIPS score · -12 vs avg
234
Part D claims, 2023
85%
generic prescribing

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.

STACY ELLIS, PA's MIPS score vs every scored U.S. clinician

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

71 8th percentile higher than 8% 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%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 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 STACY ELLIS, PA?

Below national average

NPI registry status

Active

Issued 02/06/2008

NPI 1548448087

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

234 70% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

70.8878/100 12.212199999999996% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Oklahoma

How Physician Assistant compares to other specialties among Oklahoma providers

Oklahoma providers

Physician Assistant share within Oklahoma

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

Medicare quality performance — MIPS

STACY ELLIS, PA's 2023 MIPS final score plotted against the Physician Assistant national average

Below national average
MIPS Final Score
70.8878/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 70.8878/100 vs national avg 83.1

0%100%National avg83%70.9%
MIPS final score (Physician Assistant) — 70.8878/100 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).

STACY ELLIS, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 448 36TH AVE NW STE 101, NORMAN, OK, 73072, with a listed phone of (405) 573-9905. NPI 1548448087 was issued on 02/06/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ELLIS 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 234 prescription claims written by this provider, covering 42 Medicare beneficiaries and totaling roughly $70K in drug spend, split 15% brand-name and 85% generic by claim count. 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 70.8878/100 for the 2023 performance year (Quality 71.627, Cost 54.6656), 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

448 36TH AVE NW STE 101
NORMAN, OK 73072

Provider Details

NPI 1548448087
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 02/06/2008

CMS Quality Score (MIPS)

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

70.8878
Final Score
Avg: 83.1
71.627
Quality
54.6656
Cost
72
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where STACY ELLIS, 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.

STILLWATER MEDICAL CENTER AUTHORITY
PONCA CITY, OK

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 · Typical

STACY ELLIS, PA — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 234 2023 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 2023.

234
Total Claims
$70K
Total Drug Cost
42
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
246
Total Day Supply
6,503
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$65K
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
65.0 years
Avg HCC Risk Score
1.81
Gender Split
57% female / 43% male
Age Distribution
<65: 17, 65-74: 14, 75-84: 11, 85+: 0

Top Prescribed Drugs (Medicare Part D)

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

What STACY ELLIS, 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
Quetiapine Fumarate
20
Buspirone Hcl
15
Sertraline Hcl
15
Hydroxychloroquine Sulfate
12
Invega Sustenna
Paliperidone Palmitate
12
Mirtazapine
11
Olanzapine
11
Ziprasidone Hcl
11

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

Physician Assistant Overview

How STACY ELLIS, 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

STACY ELLIS, PA's 234 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Oklahoma

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

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

Frequently Asked Questions

What is STACY ELLIS, PA's specialty?
STACY ELLIS, PA specializes in Physician Assistant and practices in NORMAN, Oklahoma. Credentials: PA.
How much does STACY ELLIS, PA prescribe under Medicare Part D?
In 2023, STACY ELLIS, PA wrote 234 Medicare Part D claims totaling $70K in drug costs for 42 beneficiaries.
What is STACY ELLIS, PA's Medicare quality score?
STACY ELLIS, PA has a CMS MIPS Final Score of 70.8878/100 (Quality: 71.627, Cost: 54.6656). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STACY ELLIS, PA located?
STACY ELLIS, PA is located at 448 36TH AVE NW STE 101, NORMAN, OK, 73072. Phone: (405) 573-9905.
What is STACY ELLIS, PA's NPI number?
STACY ELLIS, PA's National Provider Identifier (NPI) is 1548448087, issued on 02/06/2008.
Does STACY ELLIS, PA prescribe more brand-name or generic drugs?
STACY ELLIS, PA's prescribing is 15% brand-name and 85% generic drugs by claim count, with $65K in brand drug costs.
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 STACY ELLIS, PA prescribe most often?
Based on 2023 Medicare Part D data, STACY ELLIS, PA's most frequently prescribed drugs include Quetiapine Fumarate, Buspirone Hcl, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STACY ELLIS, PA accept Medicare?
STACY ELLIS, PA appears in CMS Medicare data with 234 Part D claims and 42 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STACY ELLIS, PA's credentials?
STACY ELLIS, PA's NPI is 1548448087 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