2026 NPPES data Family Medicine Physician NPI 1801383146 DO
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Walter Stewart, DO

Family Medicine Physician in Craig, 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
2K
Medicare Part D claims · 337 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
88.2/100
▲ 5 pts above national avg 83.1 · [object Object]

What the federal data shows

Walter Stewart, DO reported a CMS MIPS final score of 88.2/100 — above the 83.1 national average — and filed 1,821 Medicare Part D claims in 2023.

88.2/100
MIPS score · +5 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.

Walter Stewart, DO's MIPS score vs every scored U.S. clinician

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

88 Top 44% higher than 56% 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

Board certification likely (heuristic — not verified)

Walter Stewart, 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 Walter Stewart, DO?

High performer (top quartile)

NPI registry status

Active

Issued 04/20/2018

NPI 1801383146

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

1,821 47% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

88.2/100 5.1 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Colorado

How Family Medicine Physician compares to other specialties among Colorado providers

Colorado providers

Family Medicine Physician share within Colorado

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

Medicare quality performance — MIPS

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

High performer (top quartile)
MIPS Final Score
88.2/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Medicine Physician) — 88.2/100 vs national avg 83.1

0%100%National avg83%88.2%
MIPS final score (Family Medicine Physician) — 88.2/100 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).

Walter Stewart, DO appears in the CMS NPPES registry as a Family Medicine Physician provider holding DO credentials at 750 HOSPITAL LOOP, Craig, CO, 81625, with a listed phone of (970) 824-9411. NPI 1801383146 was issued on 04/20/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Stewart 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 1,821 prescription claims written by this provider, covering 337 Medicare beneficiaries and totaling roughly $205K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 9.9%. 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 88.2/100 for the 2023 performance year (Quality 89), 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

750 HOSPITAL LOOP
Craig, CO 81625

Provider Details

NPI 1801383146
Specialty Family Medicine Physician
Credentials DO
Gender Male
NPI Issued 04/20/2018

CMS Quality Score (MIPS)

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

88.2296
Final Score
Avg: 83.1
88.9629
Quality
81
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Walter Stewart, 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.

The Memorial Hospital
Craig, 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).

Brand vs generic prescribing mix · Typical

Walter Stewart, DO — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 1,821 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.

1,821
Total Claims
$205K
Total Drug Cost
337
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,742
Total Day Supply
107,208
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$165K
Generic Drug Cost
$39K
Opioid Claims
180 (9.9% rate)
Antibiotic Claims
26

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
1.49
Gender Split
52% female / 48% male
Age Distribution
<65: 73, 65-74: 147, 75-84: 88, 85+: 29

Top Prescribed Drugs (Medicare Part D)

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

What Walter Stewart, 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
Levothyroxine Sodium
92
Lisinopril
74
Gabapentin
67
Atorvastatin Calcium
60
Tramadol Hcl
58
Metformin Hcl
52
Oxycodone Hcl
45
Omeprazole
42
Furosemide
40
Losartan Potassium
38

* 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 Walter Stewart, 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

Walter Stewart, DO's 1,821 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Colorado

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

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 Colorado 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 Walter Stewart, DO's specialty?
Walter Stewart, DO specializes in Family Medicine Physician and practices in Craig, Colorado. Credentials: DO.
How much does Walter Stewart, DO prescribe under Medicare Part D?
In 2023, Walter Stewart, DO wrote 1,821 Medicare Part D claims totaling $205K in drug costs for 337 beneficiaries.
What is Walter Stewart, DO's Medicare quality score?
Walter Stewart, DO has a CMS MIPS Final Score of 88.2/100 (Quality: 89). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Walter Stewart, DO located?
Walter Stewart, DO is located at 750 HOSPITAL LOOP, Craig, CO, 81625. Phone: (970) 824-9411.
What is Walter Stewart, DO's NPI number?
Walter Stewart, DO's National Provider Identifier (NPI) is 1801383146, issued on 04/20/2018.
Does Walter Stewart, DO prescribe more brand-name or generic drugs?
Walter Stewart, DO's prescribing is 12% brand-name and 88% generic drugs by claim count, with $165K in brand drug costs.
Does Walter Stewart, DO prescribe opioids?
Yes, Walter Stewart, DO had 180 opioid claims in 2023 with an opioid prescribing rate of 9.9%.
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 Walter Stewart, DO prescribe most often?
Based on 2023 Medicare Part D data, Walter Stewart, DO's most frequently prescribed drugs include Levothyroxine Sodium, Lisinopril, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Walter Stewart, DO accept Medicare?
Walter Stewart, DO appears in CMS Medicare data with 1,821 Part D claims and 337 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Walter Stewart, DO's credentials?
Walter Stewart, DO's NPI is 1801383146 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