2026 NPPES data Ophthalmology Physician NPI 1659346245 MD
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SAMUEL AMSTUTZ, MD

Ophthalmology Physician in WICHITA, 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
249
Medicare Part D claims · 168 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
90.67/100
▲ 8 pts above national avg 83.1 · [object Object]

What the federal data shows

SAMUEL AMSTUTZ, MD reported a CMS MIPS final score of 90.67/100 — above the 83.1 national average — and filed 249 Medicare Part D claims in 2023.

90.67/100
MIPS score · +8 vs avg
249
Part D claims, 2023
92%
generic prescribing
Likely
board-certified (heuristic)

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.

SAMUEL AMSTUTZ, MD's MIPS score vs every scored U.S. clinician

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

91 Top 40% higher than 60% 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

Board certification likely (heuristic — not verified)

SAMUEL AMSTUTZ, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about SAMUEL AMSTUTZ, MD?

High performer (top quartile)

NPI registry status

Active

Issued 02/17/2006

NPI 1659346245

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

249 82% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

90.67/100 7.570000000000007% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Kansas

How Ophthalmology Physician compares to other specialties among Kansas providers

Kansas providers

Ophthalmology Physician share within Kansas

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Kansas

Medicare quality performance — MIPS

SAMUEL AMSTUTZ, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average

High performer (top quartile)
MIPS Final Score
90.67/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 90.67/100 vs national avg 83.1

0%100%National avg83%90.7%
MIPS final score (Ophthalmology Physician) — 90.67/100 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).

SAMUEL AMSTUTZ, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 655 N WOODLAWN, WICHITA, KS, 67208, with a listed phone of (316) 684-5158. NPI 1659346245 was issued on 02/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AMSTUTZ 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 249 prescription claims written by this provider, covering 168 Medicare beneficiaries and totaling roughly $3K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 55.4%. 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 90.67/100 for the 2023 performance year (Quality 100, Cost 68.9), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

655 N WOODLAWN
WICHITA, KS 67208

Provider Details

NPI 1659346245
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 02/17/2006

CMS Quality Score (MIPS)

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

90.67
Final Score
Avg: 83.1
100
Quality
68.9
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where SAMUEL AMSTUTZ, MD 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.

GRENE VISION GROUP LLC
WICHITA, KS

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 · Generic-heavy

SAMUEL AMSTUTZ, MD — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 249 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.

249
Total Claims
$3K
Total Drug Cost
168
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
261
Total Day Supply
2,584
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$1K
Generic Drug Cost
$2K
Opioid Claims
138 (55.4% rate)
Antibiotic Claims
11

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
1.11
Gender Split
59% female / 41% male

Top Prescribed Drugs (Medicare Part D)

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

What SAMUEL AMSTUTZ, MD 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
Acetaminophen-Codeine
Acetaminophen With Codeine
120
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
42
Erythromycin
Erythromycin Base
26
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
16
Prednisolone Acetate
14

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

Ophthalmology Physician Overview

How SAMUEL AMSTUTZ, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

SAMUEL AMSTUTZ, MD's 249 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Kansas

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

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

Frequently Asked Questions

What is SAMUEL AMSTUTZ, MD's specialty?
SAMUEL AMSTUTZ, MD specializes in Ophthalmology Physician and practices in WICHITA, Kansas. Credentials: MD.
How much does SAMUEL AMSTUTZ, MD prescribe under Medicare Part D?
In 2023, SAMUEL AMSTUTZ, MD wrote 249 Medicare Part D claims totaling $3K in drug costs for 168 beneficiaries.
What is SAMUEL AMSTUTZ, MD's Medicare quality score?
SAMUEL AMSTUTZ, MD has a CMS MIPS Final Score of 90.67/100 (Quality: 100, Cost: 68.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is SAMUEL AMSTUTZ, MD located?
SAMUEL AMSTUTZ, MD is located at 655 N WOODLAWN, WICHITA, KS, 67208. Phone: (316) 684-5158.
What is SAMUEL AMSTUTZ, MD's NPI number?
SAMUEL AMSTUTZ, MD's National Provider Identifier (NPI) is 1659346245, issued on 02/17/2006.
Does SAMUEL AMSTUTZ, MD prescribe more brand-name or generic drugs?
SAMUEL AMSTUTZ, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $1K in brand drug costs.
Does SAMUEL AMSTUTZ, MD prescribe opioids?
Yes, SAMUEL AMSTUTZ, MD had 138 opioid claims in 2023 with an opioid prescribing rate of 55.4%.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does SAMUEL AMSTUTZ, MD prescribe most often?
Based on 2023 Medicare Part D data, SAMUEL AMSTUTZ, MD's most frequently prescribed drugs include Acetaminophen-Codeine, Neomycin-Polymyxin-Dexameth, Erythromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SAMUEL AMSTUTZ, MD accept Medicare?
SAMUEL AMSTUTZ, MD appears in CMS Medicare data with 249 Part D claims and 168 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SAMUEL AMSTUTZ, MD's credentials?
SAMUEL AMSTUTZ, MD's NPI is 1659346245 with credentials MD. 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