2026 NPPES data Addiction Medicine (Internal Medicine) Physician NPI 1013952175 MD
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CHARLES REZNIKOFF, MD

Addiction Medicine (Internal Medicine) Physician in MINNEAPOLIS, Minnesota. 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
411
Medicare Part D claims · 51 beneficiaries · Addiction Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

CHARLES REZNIKOFF, MD filed 411 Medicare Part D claims in 2023 as a Addiction Medicine (Internal Medicine) Physician in MINNEAPOLIS, Minnesota, prescribing 84% generic.

411
Part D claims, 2023
84%
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 REZNIKOFF, MD's Medicare Part D volume vs every U.S. prescriber

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

411 Top 38% higher than 62% 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%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 certification likely (heuristic — not verified)

CHARLES REZNIKOFF, MD 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 CHARLES REZNIKOFF, MD?

Quality data not reported

NPI registry status

Active

Issued 06/20/2006

NPI 1013952175

Primary specialty

Addiction Medicine (Internal Medicine) Physician

Niche

553 US NPIs in this specialty

Medicare Part D claims

411 71% vs specialty avg

2023 prescription claims

Specialty avg: 1,403

Specialty distribution in Minnesota

How Addiction Medicine (Internal Medicine) Physician compares to other specialties among Minnesota providers

Minnesota providers

Addiction Medicine (Internal Medicine) Physician share within Minnesota

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Addiction Medicine (Internal Medicine) 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 REZNIKOFF, MD appears in the CMS NPPES registry as a Addiction Medicine (Internal Medicine) Physician provider holding MD credentials at 914 S 8TH ST, MINNEAPOLIS, MN, 55404, with a listed phone of (612) 873-5500. NPI 1013952175 was issued on 06/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what REZNIKOFF 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 411 prescription claims written by this provider, covering 51 Medicare beneficiaries and totaling roughly $90K in drug spend, split 16% brand-name and 84% 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 (Internal Medicine) Physician is a narrow specialty nationwide, with 553 enrolled providers across 46 states and an average of 1,403 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

914 S 8TH ST
MINNEAPOLIS, MN 55404

Provider Details

NPI 1013952175
Specialty Addiction Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 06/20/2006

Hospital and facility affiliations

Facilities where CHARLES REZNIKOFF, 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.

NORTHFIELD HOSPITAL
★★★★☆ 4/5
NORTHFIELD, MN
Acute Care Hospitals
CMS CCN: 240014
HENNEPIN HEALTHCARE SYSTEM INC
MINNEAPOLIS, MN

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 REZNIKOFF, MD — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 411 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.

411
Total Claims
$90K
Total Drug Cost
51
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
450
Total Day Supply
11,934
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$55K
Generic Drug Cost
$35K

Patient Demographics

Average Patient Age
64.5 years
Avg HCC Risk Score
2.76
Gender Split
37% female / 63% male
Age Distribution
<65: 22, 65-74: 21, 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 REZNIKOFF, 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
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
174
Gabapentin
33
Suboxone
Buprenorphine Hcl/Naloxone Hcl
31
Buprenorphine Hcl
22

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

Addiction Medicine (Internal Medicine) Physician Overview

How CHARLES REZNIKOFF, MD fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.

553
Addiction Medicine (Internal Medicine) Physician Providers in US
46
States with Addiction Medicine (Internal Medicine) Physician
1,403
Avg Claims per Provider

CHARLES REZNIKOFF, MD's 411 claims are below the specialty average of 1,403.

Nearby Addiction Medicine (Internal Medicine) Physician Providers in Minnesota

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

Compare Addiction Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHARLES REZNIKOFF, MD's specialty?
CHARLES REZNIKOFF, MD specializes in Addiction Medicine (Internal Medicine) Physician and practices in MINNEAPOLIS, Minnesota. Credentials: MD.
How much does CHARLES REZNIKOFF, MD prescribe under Medicare Part D?
In 2023, CHARLES REZNIKOFF, MD wrote 411 Medicare Part D claims totaling $90K in drug costs for 51 beneficiaries.
Where is CHARLES REZNIKOFF, MD located?
CHARLES REZNIKOFF, MD is located at 914 S 8TH ST, MINNEAPOLIS, MN, 55404. Phone: (612) 873-5500.
What is CHARLES REZNIKOFF, MD's NPI number?
CHARLES REZNIKOFF, MD's National Provider Identifier (NPI) is 1013952175, issued on 06/20/2006.
Does CHARLES REZNIKOFF, MD prescribe more brand-name or generic drugs?
CHARLES REZNIKOFF, MD's prescribing is 16% brand-name and 84% generic drugs by claim count, with $55K in brand drug costs.
How many Addiction Medicine (Internal Medicine) Physician providers are there in the US?
There are 553 Addiction Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Internal Medicine) Physician provider writes 1,403 Medicare Part D claims per year.
What drugs does CHARLES REZNIKOFF, MD prescribe most often?
Based on 2023 Medicare Part D data, CHARLES REZNIKOFF, MD's most frequently prescribed drugs include Buprenorphine-Naloxone, Gabapentin, Suboxone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLES REZNIKOFF, MD accept Medicare?
CHARLES REZNIKOFF, MD appears in CMS Medicare data with 411 Part D claims and 51 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLES REZNIKOFF, MD's credentials?
CHARLES REZNIKOFF, MD's NPI is 1013952175 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