2026 NPPES data Addiction Medicine (Psychiatry & Neurology) Physician NPI 1508979758 MD
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CHARLES HARRIS, MD

Addiction Medicine (Psychiatry & Neurology) Physician in NEW LENOX, Illinois. 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
3K
Medicare Part D claims · 157 beneficiaries · Addiction Medicine (Psychiatry & Neurology) Physician avg: 1K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$118.74
5 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CHARLES HARRIS, MD filed 2,710 Medicare Part D claims in 2023 as a Addiction Medicine (Psychiatry & Neurology) Physician in NEW LENOX, Illinois, prescribing 95% generic.

3K
Part D claims, 2023
95%
generic prescribing
$118.74
industry payments (Sunshine Act)

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 HARRIS, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,710 Top 12% higher than 88% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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-eligible specialty (heuristic — not verified)

CHARLES HARRIS, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about CHARLES HARRIS, MD?

Quality data not reported

NPI registry status

Active

Issued 08/15/2006

NPI 1508979758

Primary specialty

Addiction Medicine (Psychiatry & Neurology) Physician

Niche

658 US NPIs in this specialty

Medicare Part D claims

2,710 166% vs specialty avg

2023 prescription claims

Specialty avg: 1,019

Specialty distribution in Illinois

How Addiction Medicine (Psychiatry & Neurology) Physician compares to other specialties among Illinois providers

Illinois providers

Addiction Medicine (Psychiatry & Neurology) Physician share within Illinois

1. Addiction Medicine (Psychiatry & Neurology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Psychiatry & Neurology) Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Medicine (Psychiatry & Neurology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Addiction Medicine (Psychiatry & Neurology) Physician ABMS/AOA estimate

Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate

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 HARRIS, MD appears in the CMS NPPES registry as a Addiction Medicine (Psychiatry & Neurology) Physician provider holding MD credentials at 12230 CASHLENAN LN, NEW LENOX, IL, 60451, with a listed phone of (815) 463-8994. NPI 1508979758 was issued on 08/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HARRIS 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 2,710 prescription claims written by this provider, covering 157 Medicare beneficiaries and totaling roughly $442K in drug spend, split 5% brand-name and 95% generic by claim count. 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.

Addiction Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 658 enrolled providers across 49 states and an average of 1,019 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

12230 CASHLENAN LN
NEW LENOX, IL 60451

Provider Details

NPI 1508979758
Specialty Addiction Medicine (Psychiatry & Neurology) Physician
Credentials MD
Gender Male
NPI Issued 08/15/2006

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for CHARLES HARRIS, MD. Source: openpaymentsdata.cms.gov.

Total received

$119

Largest payer

Neurocrine Biosciences, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 CHARLES HARRIS, MD. To verify CHARLES HARRIS, MD'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

CHARLES HARRIS, MD — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 2,710 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.

2,710
Total Claims
$442K
Total Drug Cost
157
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,915
Total Day Supply
83,891
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$363K
Generic Drug Cost
$79K

Patient Demographics

Average Patient Age
52.7 years
Avg HCC Risk Score
1.37
Gender Split
44% female / 56% male
Age Distribution
<65: 120, 65-74: 25, 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.

What CHARLES HARRIS, 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
Quetiapine Fumarate
293
Trazodone Hcl
277
Risperidone
211
Benztropine Mesylate
164
Olanzapine
150
Divalproex Sodium Er
Divalproex Sodium
149
Haloperidol
103
Haloperidol Decanoate
101
Sertraline Hcl
91
Lorazepam
80

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

Addiction Medicine (Psychiatry & Neurology) Physician Overview

How CHARLES HARRIS, MD fits within the Addiction Medicine (Psychiatry & Neurology) Physician landscape nationally.

658
Addiction Medicine (Psychiatry & Neurology) Physician Providers in US
49
States with Addiction Medicine (Psychiatry & Neurology) Physician
1,019
Avg Claims per Provider

CHARLES HARRIS, MD's 2,710 claims are above the specialty average of 1,019.

Nearby Addiction Medicine (Psychiatry & Neurology) Physician Providers in Illinois

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

Compare Addiction Medicine (Psychiatry & Neurology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHARLES HARRIS, MD's specialty?
CHARLES HARRIS, MD specializes in Addiction Medicine (Psychiatry & Neurology) Physician and practices in NEW LENOX, Illinois. Credentials: MD.
How much does CHARLES HARRIS, MD prescribe under Medicare Part D?
In 2023, CHARLES HARRIS, MD wrote 2,710 Medicare Part D claims totaling $442K in drug costs for 157 beneficiaries.
Where is CHARLES HARRIS, MD located?
CHARLES HARRIS, MD is located at 12230 CASHLENAN LN, NEW LENOX, IL, 60451. Phone: (815) 463-8994.
What is CHARLES HARRIS, MD's NPI number?
CHARLES HARRIS, MD's National Provider Identifier (NPI) is 1508979758, issued on 08/15/2006.
Does CHARLES HARRIS, MD prescribe more brand-name or generic drugs?
CHARLES HARRIS, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $363K in brand drug costs.
How many Addiction Medicine (Psychiatry & Neurology) Physician providers are there in the US?
There are 658 Addiction Medicine (Psychiatry & Neurology) Physician providers across 49 states in the US. The average Addiction Medicine (Psychiatry & Neurology) Physician provider writes 1,019 Medicare Part D claims per year.
What drugs does CHARLES HARRIS, MD prescribe most often?
Based on 2023 Medicare Part D data, CHARLES HARRIS, MD's most frequently prescribed drugs include Quetiapine Fumarate, Trazodone Hcl, Risperidone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLES HARRIS, MD accept Medicare?
CHARLES HARRIS, MD appears in CMS Medicare data with 2,710 Part D claims and 157 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLES HARRIS, MD's credentials?
CHARLES HARRIS, MD's NPI is 1508979758 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.
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