2026 NPPES data Physician Assistant NPI 1659592046 P.A.
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JAMES GROWNEY, P.A.

Physician Assistant in ATCHISON, Kansas. 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
2K
Medicare Part D claims · 191 beneficiaries · Physician Assistant avg: 790
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.6069/100
▲ 14 pts above national avg 83.1 · [object Object]

What the federal data shows

JAMES GROWNEY, P.A. reported a CMS MIPS final score of 96.6069/100 — above the 83.1 national average — and filed 2,128 Medicare Part D claims in 2023.

96.6069/100
MIPS score · +14 vs avg
2K
Part D claims, 2023
91%
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.

JAMES GROWNEY, P.A.'s MIPS score vs every scored U.S. clinician

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

97 Top 17% higher than 83% 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%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. 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 JAMES GROWNEY, P.A.?

High performer (top quartile)

NPI registry status

Active

Issued 05/01/2007

NPI 1659592046

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

2,128 169% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

96.6069/100 13.506900000000002% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Kansas

How Physician Assistant compares to other specialties among Kansas providers

Kansas providers

Physician Assistant share within Kansas

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

Medicare quality performance — MIPS

JAMES GROWNEY, P.A.'s 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
96.6069/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 96.6069/100 vs national avg 83.1

0%100%National avg83%96.6%
MIPS final score (Physician Assistant) — 96.6069/100 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).

JAMES GROWNEY, P.A. appears in the CMS NPPES registry as a Physician Assistant provider holding P.A. credentials at 801 ATCHISON ST, ATCHISON, KS, 66002, with a listed phone of (913) 367-5020. NPI 1659592046 was issued on 05/01/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GROWNEY 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 2,128 prescription claims written by this provider, covering 191 Medicare beneficiaries and totaling roughly $201K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 4.2%. 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 96.6069/100 for the 2023 performance year (Quality 92.2415), 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

801 ATCHISON ST
ATCHISON, KS 66002

Provider Details

NPI 1659592046
Specialty Physician Assistant
Credentials P.A.
Gender Male
NPI Issued 05/01/2007

CMS Quality Score (MIPS)

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

96.6069
Final Score
Avg: 83.1
92.2415
Quality
100
Promoting Interoperability

Reporting: Group practice

Brand vs generic prescribing mix · Generic-heavy

JAMES GROWNEY, P.A. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 2,128 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.

2,128
Total Claims
$201K
Total Drug Cost
191
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,222
Total Day Supply
121,159
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$153K
Generic Drug Cost
$47K
Opioid Claims
90 (4.2% rate)
Antibiotic Claims
29

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.24
Gender Split
51% female / 49% male
Age Distribution
<65: 37, 65-74: 81, 75-84: 50, 85+: 23

Top Prescribed Drugs (Medicare Part D)

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

What JAMES GROWNEY, P.A. 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
Losartan Potassium
86
Gabapentin
77
Hydrochlorothiazide
70
Pantoprazole Sodium
60
Tamsulosin Hcl
57
Potassium Chloride
53
Atorvastatin Calcium
50
Furosemide
47
Lisinopril
46
Levothyroxine Sodium
44

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

Physician Assistant Overview

How JAMES GROWNEY, P.A. fits within the Physician Assistant landscape nationally.

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

JAMES GROWNEY, P.A.'s 2,128 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Kansas

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

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

Frequently Asked Questions

What is JAMES GROWNEY, P.A.'s specialty?
JAMES GROWNEY, P.A. specializes in Physician Assistant and practices in ATCHISON, Kansas. Credentials: P.A..
How much does JAMES GROWNEY, P.A. prescribe under Medicare Part D?
In 2023, JAMES GROWNEY, P.A. wrote 2,128 Medicare Part D claims totaling $201K in drug costs for 191 beneficiaries.
What is JAMES GROWNEY, P.A.'s Medicare quality score?
JAMES GROWNEY, P.A. has a CMS MIPS Final Score of 96.6069/100 (Quality: 92.2415). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JAMES GROWNEY, P.A. located?
JAMES GROWNEY, P.A. is located at 801 ATCHISON ST, ATCHISON, KS, 66002. Phone: (913) 367-5020.
What is JAMES GROWNEY, P.A.'s NPI number?
JAMES GROWNEY, P.A.'s National Provider Identifier (NPI) is 1659592046, issued on 05/01/2007.
Does JAMES GROWNEY, P.A. prescribe more brand-name or generic drugs?
JAMES GROWNEY, P.A.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $153K in brand drug costs.
Does JAMES GROWNEY, P.A. prescribe opioids?
Yes, JAMES GROWNEY, P.A. had 90 opioid claims in 2023 with an opioid prescribing rate of 4.2%.
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 JAMES GROWNEY, P.A. prescribe most often?
Based on 2023 Medicare Part D data, JAMES GROWNEY, P.A.'s most frequently prescribed drugs include Losartan Potassium, Gabapentin, Hydrochlorothiazide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAMES GROWNEY, P.A. accept Medicare?
JAMES GROWNEY, P.A. appears in CMS Medicare data with 2,128 Part D claims and 191 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES GROWNEY, P.A.'s credentials?
JAMES GROWNEY, P.A.'s NPI is 1659592046 with credentials P.A.. 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