NPI registry status
Active
2026 NPPES data Addiction Medicine (Preventive Medicine) Physician NPI 1801979463 M.D.
Verify on CMS → Stephen Holtsford, M.D.
Addiction Medicine (Preventive Medicine) Physician in Saint Charles, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 325 in Addiction Medicine (Preventive 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
174
Medicare Part D claims · 30 beneficiaries · Addiction Medicine (Preventive Medicine) Physician avg: 959
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Stephen Holtsford, M.D. filed 174 Medicare Part D claims in 2023 as a Addiction Medicine (Preventive Medicine) Physician in Saint Charles, Illinois, prescribing 91% generic.
- 174
- Part D claims, 2023
- 91%
- 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.
Stephen Holtsford, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
174 35th percentile higher than 35% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Stephen Holtsford, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Stephen Holtsford, M.D.?
Quality data not reportedPrimary specialty
Addiction Medicine (Preventive Medicine) Physician
Medicare Part D claims
174 82% vs specialty avg
Specialty distribution in Illinois
How Addiction Medicine (Preventive Medicine) Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Addiction Medicine (Preventive Medicine) Physician. Verify directly:
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).
Stephen Holtsford, M.D. appears in the CMS NPPES registry as an Addiction Medicine (Preventive Medicine) Physician provider holding M.D. credentials at 210 S 5TH ST STE 10, Saint Charles, IL, 60174, with a listed phone of (630) 940-2468. NPI 1801979463 was issued on 10/24/2006.
Medicare Part D records for calendar year 2023 show 174 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $33K in drug spend, split 9% brand-name and 91% generic by claim count.
Addiction Medicine (Preventive Medicine) Physician is a narrow specialty nationwide, with 325 enrolled providers across 44 states and an average of 959 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 | 1801979463 |
|---|---|
| Specialty | Addiction Medicine (Preventive Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/24/2006 |
Hospital and facility affiliations
Facilities where Stephen Holtsford, M.D. 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.
County OF Dupage Department OF Health
Wheaton, IL
Lighthouse Recovery
St Charles, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Stephen Holtsford, M.D.. To verify Stephen Holtsford, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Stephen Holtsford, M.D. - brand share 9.0%
Addiction Medicine (Preventive Medicine) Physician average
9% brand-name claims vs 91% generic, on 174 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.
174
Total Claims
$33K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 176
- Total Day Supply
- 3,820
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $13K
- Generic Drug Cost
- $19K
Patient Demographics
- Average Patient Age
- 59.4 years
- Avg HCC Risk Score
- 1.34
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 16, 65-74: 13, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 99 |
| Buprenorphine Hcl | 30 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Addiction Medicine (Preventive Medicine) Physician in IL →
All providers in Illinois →
Compare specialties →
Addiction Medicine (Preventive Medicine) Physician Overview
How Stephen Holtsford, M.D. fits within the Addiction Medicine (Preventive Medicine) Physician landscape nationally.
325
Addiction Medicine (Preventive Medicine) Physician Providers in US
44
States with Addiction Medicine (Preventive Medicine) Physician
959
Avg Claims per Provider
Stephen Holtsford, M.D.'s 174 claims are below the specialty average of 959.
Nearby Addiction Medicine (Preventive Medicine) Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Holtsford.
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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Addiction Medicine (Preventive 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.
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Frequently Asked Questions
What is Stephen Holtsford, M.D.'s specialty? ▼
Stephen Holtsford, M.D. specializes in Addiction Medicine (Preventive Medicine) Physician and practices in Saint Charles, Illinois. Credentials: M.D..
How much does Stephen Holtsford, M.D. prescribe under Medicare Part D? ▼
In 2023, Stephen Holtsford, M.D. wrote 174 Medicare Part D claims totaling $33K in drug costs for 30 beneficiaries.
Where is Stephen Holtsford, M.D. located? ▼
Stephen Holtsford, M.D. is located at 210 S 5TH ST STE 10, Saint Charles, IL, 60174. Phone: (630) 940-2468.
What is Stephen Holtsford, M.D.'s NPI number? ▼
Stephen Holtsford, M.D.'s National Provider Identifier (NPI) is 1801979463, issued on 10/24/2006.
Does Stephen Holtsford, M.D. prescribe more brand-name or generic drugs? ▼
Stephen Holtsford, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $13K in brand drug costs.
How many Addiction Medicine (Preventive Medicine) Physician providers are there in the US? ▼
There are 325 Addiction Medicine (Preventive Medicine) Physician providers across 44 states in the US. The average Addiction Medicine (Preventive Medicine) Physician provider writes 959 Medicare Part D claims per year.
What drugs does Stephen Holtsford, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephen Holtsford, M.D.'s most frequently prescribed drugs include Buprenorphine-Naloxone, Buprenorphine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Holtsford, M.D. accept Medicare? ▼
Stephen Holtsford, M.D. appears in CMS Medicare data with 174 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Holtsford, M.D.'s credentials? ▼
Stephen Holtsford, M.D.'s NPI is 1801979463 with credentials M.D.. 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.
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.