2026 NPPES data Family Medicine Physician NPI 1861429201 DO
Verify on CMS →

Charles Lewis, DO

Family Medicine Physician in Sturgis, South Dakota. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 147,640 in Family Medicine Physician, 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
2K
Medicare Part D claims · 204 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97.6/100
▲ 14 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Charles Lewis, DO reported a CMS MIPS final score of 97.6/100 — above the 83.1 national average — and filed 1,979 Medicare Part D claims in 2023.

97.6/100
MIPS score · +14 vs avg
2K
Part D claims, 2023
88%
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.

Charles Lewis, DO's MIPS score vs every scored U.S. clinician

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

98 Top 15% higher than 85% 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

Where Charles Lewis, DO sits

This provider among family medicine physician peers

Across the 22,040 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Charles Lewis, DO writes more Part D claims than 44% of them and scores higher on MIPS quality than 89% — placing this provider in the lower-volume, high-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: 92 · MIPS quality — percentile: 80Part D claim volume — percentile in specialty: 68 · MIPS quality — percentile: 45Part D claim volume — percentile in specialty: 17 · MIPS quality — percentile: 67Part D claim volume — percentile in specialty: 65 · MIPS quality — percentile: 58Part D claim volume — percentile in specialty: 43 · MIPS quality — percentile: 75Part D claim volume — percentile in specialty: 22 · MIPS quality — percentile: 35Part D claim volume — percentile in specialty: 3 · MIPS quality — percentile: 78Part D claim volume — percentile in specialty: 27 · MIPS quality — percentile: 88Part D claim volume — percentile in specialty: 5 · MIPS quality — percentile: 37Part D claim volume — percentile in specialty: 7 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 70 · MIPS quality — percentile: 62Part D claim volume — percentile in specialty: 63 · MIPS quality — percentile: 57Part D claim volume — percentile in specialty: 32 · MIPS quality — percentile: 40Part D claim volume — percentile in specialty: 20 · MIPS quality — percentile: 22Part D claim volume — percentile in specialty: 72 · MIPS quality — percentile: 15Part D claim volume — percentile in specialty: 12 · MIPS quality — percentile: 98Part D claim volume — percentile in specialty: 62 · MIPS quality — percentile: 20Part D claim volume — percentile in specialty: 37 · MIPS quality — percentile: 13Part D claim volume — percentile in specialty: 45 · MIPS quality — percentile: 33Part D claim volume — percentile in specialty: 18 · MIPS quality — percentile: 42Part D claim volume — percentile in specialty: 77 · MIPS quality — percentile: 10Part D claim volume — percentile in specialty: 38 · MIPS quality — percentile: 12Part D claim volume — percentile in specialty: 23 · MIPS quality — percentile: 70Part D claim volume — percentile in specialty: 2 · MIPS quality — percentile: 17Part D claim volume — percentile in specialty: 10 · MIPS quality — percentile: 2Part D claim volume — percentile in specialty: 55 · MIPS quality — percentile: 8Part D claim volume — percentile in specialty: 82 · MIPS quality — percentile: 72Part D claim volume — percentile in specialty: 87 · MIPS quality — percentile: 85Part D claim volume — percentile in specialty: 88 · MIPS quality — percentile: 3Part D claim volume — percentile in specialty: 33 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 13 · MIPS quality — percentile: 38Part D claim volume — percentile in specialty: 83 · MIPS quality — percentile: 25Part D claim volume — percentile in specialty: 85 · MIPS quality — percentile: 97Part D claim volume — percentile in specialty: 98 · MIPS quality — percentile: 0Part D claim volume — percentile in specialty: 27 · MIPS quality — percentile: 48Part D claim volume — percentile in specialty: 48 · MIPS quality — percentile: 77Part D claim volume — percentile in specialty: 50 · MIPS quality — percentile: 5Part D claim volume — percentile in specialty: 93 · MIPS quality — percentile: 60Part D claim volume — percentile in specialty: 90 · MIPS quality — percentile: 27Part D claim volume — percentile in specialty: 57 · MIPS quality — percentile: 30Part D claim volume — percentile in specialty: 97 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 67 · MIPS quality — percentile: 48Part D claim volume — percentile in specialty: 8 · MIPS quality — percentile: 17Part D claim volume — percentile in specialty: 75 · MIPS quality — percentile: 47Part D claim volume — percentile in specialty: 42 · MIPS quality — percentile: 32Part D claim volume — percentile in specialty: 25 · MIPS quality — percentile: 7Part D claim volume — percentile in specialty: 15 · MIPS quality — percentile: 28Part D claim volume — percentile in specialty: 47 · MIPS quality — percentile: 43Part D claim volume — percentile in specialty: 30 · MIPS quality — percentile: 80Part D claim volume — percentile in specialty: 100 · MIPS quality — percentile: 98Part D claim volume — percentile in specialty: 40 · MIPS quality — percentile: 67Part D claim volume — percentile in specialty: 0 · MIPS quality — percentile: 72Part D claim volume — percentile in specialty: 80 · MIPS quality — percentile: 48Part D claim volume — percentile in specialty: 52 · MIPS quality — percentile: 53Part D claim volume — percentile in specialty: 60 · MIPS quality — percentile: 83Part D claim volume — percentile in specialty: 58 · MIPS quality — percentile: 62Part D claim volume — percentile in specialty: 73 · MIPS quality — percentile: 85Part D claim volume — percentile in specialty: 78 · MIPS quality — percentile: 55Part D claim volume — percentile in specialty: 35 · MIPS quality — percentile: 65Part D claim volume — percentile in specialty: 95 · MIPS quality — percentile: 90Charles Lewis, DO — Part D claim volume — percentile in specialty: 44 · MIPS quality — percentile: 89
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Charles Lewis, DO. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic — not verified)

Charles Lewis, DO 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 Charles Lewis, DO?

High performer (top quartile)

NPI registry status

Active

Issued 06/28/2006

NPI 1861429201

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

1,979 42% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

97.6/100 14.5 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in South Dakota

How Family Medicine Physician compares to other specialties among South Dakota providers

South Dakota providers

Largest specialties in South Dakota (% of in-state providers)

Physical Therapist — 5.6%Physical Therapist5.6%Pharmacist — 5.5%Pharmacist5.5%Registered Nurse — 4.8%Registered Nurse4.8%Family Nurse Practitioner — 4.7%Family Nurse Practitioner4.7%Mental Health Counselor — 4%Mental Health Counselor4%Physician Assistant — 3.7%Physician Assistant3.7%Family Medicine Physician — 3.4%Family Medicine Physician3.4%
Largest specialties in South Dakota (% of in-state providers)

Medicare quality performance — MIPS

Charles Lewis, DO's 2023 MIPS final score plotted against the Family Medicine Physician national average

High performer (top quartile)
MIPS Final Score
97.6/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Medicine Physician) — 97.6/100 vs national avg 83.1

0%100%National avg83%97.6%
MIPS final score (Family Medicine Physician) — 97.6/100 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).

Charles Lewis, DO appears in the CMS NPPES registry as a Family Medicine Physician provider holding DO credentials at 890 LAZELLE ST, Sturgis, SD, 57785, with a listed phone of (605) 720-2600. NPI 1861429201 was issued on 06/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Lewis 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 1,979 prescription claims written by this provider, covering 204 Medicare beneficiaries and totaling roughly $239K in drug spend, split 11% brand-name and 88% generic by claim count, with an opioid prescribing rate of 1.9%. 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 97.6/100 for the 2023 performance year (Quality 86.5), compared with the national average of 83.1.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

890 LAZELLE ST
Sturgis, SD 57785

Provider Details

NPI 1861429201
Specialty Family Medicine Physician
Credentials DO
Gender Male
NPI Issued 06/28/2006

CMS Quality Score (MIPS)

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

97.5814
Final Score
Avg: 83.1
86.5348
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Charles Lewis, DO 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.

Monument Health Network Inc
Sturgis, SD

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

Charles Lewis, DO — brand share 11.0%
Family Medicine Physician average

11% brand-name claims vs 88% generic, on 1,979 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.

1,979
Total Claims
$239K
Total Drug Cost
204
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,470
Total Day Supply
131,778
Brand vs Generic
11% brand / 88% generic
Brand Drug Cost
$202K
Generic Drug Cost
$35K
Opioid Claims
37 (1.9% rate)
Antibiotic Claims
19

Patient Demographics

Average Patient Age
75.1 years
Avg HCC Risk Score
1.07
Gender Split
50% female / 50% male
Age Distribution
<65: 20, 65-74: 79, 75-84: 75, 85+: 30

Top Prescribed Drugs (Medicare Part D)

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

What Charles Lewis, DO 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
Atorvastatin Calcium
140
Omeprazole
119
Metoprolol Succinate
77
Gabapentin
68
Levothyroxine Sodium
66
Eliquis
Apixaban
62
Metformin Hcl
59
Amlodipine Besylate
58
Losartan Potassium
50
Escitalopram Oxalate
46

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

Family Medicine Physician Overview

How Charles Lewis, DO fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

Charles Lewis, DO's 1,979 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in South Dakota

Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Lewis.

Compare Family Medicine Physician 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 South Dakota medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Family Medicine Physician 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 Charles Lewis, DO's specialty?
Charles Lewis, DO specializes in Family Medicine Physician and practices in Sturgis, South Dakota. Credentials: DO.
How much does Charles Lewis, DO prescribe under Medicare Part D?
In 2023, Charles Lewis, DO wrote 1,979 Medicare Part D claims totaling $239K in drug costs for 204 beneficiaries.
What is Charles Lewis, DO's Medicare quality score?
Charles Lewis, DO has a CMS MIPS Final Score of 97.6/100 (Quality: 86.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Charles Lewis, DO located?
Charles Lewis, DO is located at 890 LAZELLE ST, Sturgis, SD, 57785. Phone: (605) 720-2600.
What is Charles Lewis, DO's NPI number?
Charles Lewis, DO's National Provider Identifier (NPI) is 1861429201, issued on 06/28/2006.
Does Charles Lewis, DO prescribe more brand-name or generic drugs?
Charles Lewis, DO's prescribing is 11% brand-name and 88% generic drugs by claim count, with $202K in brand drug costs.
Does Charles Lewis, DO prescribe opioids?
Yes, Charles Lewis, DO had 37 opioid claims in 2023 with an opioid prescribing rate of 1.9%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Charles Lewis, DO prescribe most often?
Based on 2023 Medicare Part D data, Charles Lewis, DO's most frequently prescribed drugs include Atorvastatin Calcium, Omeprazole, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Charles Lewis, DO accept Medicare?
Charles Lewis, DO appears in CMS Medicare data with 1,979 Part D claims and 204 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Charles Lewis, DO's credentials?
Charles Lewis, DO's NPI is 1861429201 with credentials DO. 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.