NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1073531521 MD
Verify on CMS → William Clutter, MD
Endocrinology, Diabetes & Metabolism Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,852 in Endocrinology, Diabetes & Metabolism 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
48
Medicare Part D claims · 22 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
0%
generic claims · 56% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.3/100
▼ 4 pts below national avg 83.1 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
William Clutter, MD reported a CMS MIPS final score of 79.3/100 - below the 83.1 national average - and filed 48 Medicare Part D claims in 2023.
- 79.3/100
- MIPS score · -4 vs avg
- 48
- Part D claims, 2023
- 0%
- 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.
William Clutter, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
79 30th percentile higher than 30% of 477,587 scored providers
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 William Clutter, MD sits
This provider among endocrinology, diabetes & metabolism physician peers
Across the 2,521 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Clutter, MD writes more Part D claims than 2% of them and scores higher on MIPS quality than 32% - placing this provider in the lower-volume, lower-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
Each dot is one endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is William Clutter, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Clutter, 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 William Clutter, MD?
Near national averagePrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
48 98% vs specialty avg
MIPS final score
79.3/100 3.8 pts vs avg
Specialty distribution in Missouri
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Missouri providers
Medicare quality performance, MIPS
William Clutter, MD's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 79.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 79.3/100 vs national avg 83.1
How MIPS and board certification work
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).
William Clutter, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 4950 CHILDRENS PL, Saint Louis, MO, 63110, with a listed phone of (314) 362-5060. NPI 1073531521 was issued on 07/17/2006.
Medicare Part D records for calendar year 2023 show 48 prescription claims written by this provider, covering 22 Medicare beneficiaries and totaling roughly $14K in drug spend, split 56% brand-name and 0% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.3/100 for the 2023 performance year (Quality 71.5, Cost 59.5), compared with the national average of 83.1.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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
Provider Details
| NPI | 1073531521 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/17/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
79.292
Final Score
Avg: 83.1
71.46
Quality
59.5132
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Clutter, 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.
Washington University
Saint Louis, MO
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 · Brand-heavy
William Clutter, MD - brand share 56.0%
Endocrinology, Diabetes & Metabolism Physician average
56% brand-name claims vs 0% generic, on 48 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.
48
Total Claims
$14K
Total Drug Cost
22
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 88
- Total Day Supply
- 2,512
- Brand vs Generic
- 56% brand / 0% generic
- Brand Drug Cost
- $13K
Patient Demographics
- Average Patient Age
- 57.0 years
- Avg HCC Risk Score
- 1.45
More Endocrinology, Diabetes & Metabolism Physician in MO →
All providers in Missouri →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How William Clutter, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
William Clutter, MD's 48 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Clutter.
Dr. Ehab Abdelgyed
M.B.B.CH
Joplin, MO
Dr. Pratibha Abraham
MD
Fenton, MO
Dr. Maha Abu Kishk
M.D.
Kansas City, MO
Dr. Sonya Addison
M.D.
Columbia, MO
Dr. Huda Al-Bahadili
MD
Saint Louis, MO
Compare Endocrinology, Diabetes & Metabolism 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 Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is William Clutter, MD's specialty? ▼
William Clutter, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does William Clutter, MD prescribe under Medicare Part D? ▼
In 2023, William Clutter, MD wrote 48 Medicare Part D claims totaling $14K in drug costs for 22 beneficiaries.
What is William Clutter, MD's Medicare quality score? ▼
William Clutter, MD has a CMS MIPS Final Score of 79.3/100 (Quality: 71.5, Cost: 59.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Clutter, MD located? ▼
William Clutter, MD is located at 4950 CHILDRENS PL, Saint Louis, MO, 63110. Phone: (314) 362-5060.
What is William Clutter, MD's NPI number? ▼
William Clutter, MD's National Provider Identifier (NPI) is 1073531521, issued on 07/17/2006.
Does William Clutter, MD prescribe more brand-name or generic drugs? ▼
William Clutter, MD's prescribing is 56% brand-name and 0% generic drugs by claim count, with $13K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
Does William Clutter, MD accept Medicare? ▼
William Clutter, MD appears in CMS Medicare data with 48 Part D claims and 22 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Clutter, MD's credentials? ▼
William Clutter, MD's NPI is 1073531521 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
View source datasets and methodology notes
- 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.