NPI registry status
Active
2026 NPPES data Obesity Medicine (Preventive Medicine) Physician NPI 1679548689 MD
Verify on CMS → Matin Nekzad, MD
Obesity Medicine (Preventive Medicine) Physician in Carterville, 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 159 in Obesity 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
15K
Medicare Part D claims · 519 beneficiaries · Obesity Medicine (Preventive Medicine) Physician avg: 1K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$366.57
24 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Matin Nekzad, MD filed 15,006 Medicare Part D claims in 2024 as an Obesity Medicine (Preventive Medicine) Physician in Carterville, Illinois, prescribing 80% generic.
- 15K
- Part D claims, 2024
- 80%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥98th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Matin Nekzad, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1679548689), first enumerated 02/22/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 15,006 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$366.57 in reported industry payments (24 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Matin Nekzad, MD's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1679548689 · Obesity Medicine (Preventive Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-HEAVY · BOOK-THIN · PHOTO-ENUM
- NPI-10 1679548689
- ENUM-LEGACY 2006
- TAX-TRACE 159
- RX-HEAVY 15K claims
- BOOK-THIN 4 in Illinois
- PHOTO-ENUM Bruce Richardson · 2006
Matin Nekzad, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
15,006 ≥ 98th percentile 98% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Matin Nekzad, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Matin Nekzad, MD?
Quality data not reportedPrimary specialty
Obesity Medicine (Preventive Medicine) Physician
Medicare Part D claims
15,006 14× vs specialty avg
Specialty distribution in Illinois
How Obesity 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 Obesity 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).
Practice Address
Provider Details
| NPI | 1679548689 |
|---|---|
| Specialty | Obesity Medicine (Preventive Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/22/2006 |
Hospital and facility affiliations
Facilities where Matin Nekzad, 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.
Shawnee Health Service And Development Corp
Carterville, 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).
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 Matin Nekzad, MD. Source: openpaymentsdata.cms.gov.
Total received
$367
Largest payer
GlaxoSmithKline, LLC.
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 Matin Nekzad, MD. To verify Matin Nekzad, 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 · Typical
Matin Nekzad, MD - brand share 20.0%
Obesity Medicine (Preventive Medicine) Physician average
20% brand-name claims vs 80% generic, on 15,006 2024 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 2024.
15,006
Total Claims
$2.2M
Total Drug Cost
519
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 26,887.633
- Total Day Supply
- 774,985
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $2.0M
- Generic Drug Cost
- $170K
- Opioid Claims
- 873 (5.8% rate)
- Antibiotic Claims
- 171
Patient Demographics
- Average Patient Age
- 69.0 years
- Avg HCC Risk Score
- 1.43
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 126, 65-74: 249, 75-84: 113, 85+: 31
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Matin Nekzad, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
840 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
690 claims
- Amlodipine Besylate
Amlodipine Besylate
574 claims
- Lisinopril
Lisinopril
504 claims
- Losartan Potassium
Losartan Potassium
455 claims
- Metformin Hcl
Metformin Hcl
432 claims
- Omeprazole
Omeprazole
400 claims
- Levothyroxine Sodium
Levothyroxine Sodium
380 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 840 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 690 |
| Amlodipine Besylate | 574 |
| Lisinopril | 504 |
| Losartan Potassium | 455 |
| Metformin Hcl | 432 |
| Omeprazole | 400 |
| Levothyroxine Sodium | 380 |
| Gabapentin | 367 |
| Jardiance Empagliflozin | 325 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Obesity Medicine (Preventive Medicine) Physician in IL →
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Obesity Medicine (Preventive Medicine) Physician Overview
How Matin Nekzad, MD fits within the Obesity Medicine (Preventive Medicine) Physician landscape nationally.
159
Obesity Medicine (Preventive Medicine) Physician Providers in US
37
States with Obesity Medicine (Preventive Medicine) Physician
1,067
Avg Claims per Provider
Matin Nekzad, MD's 15,006 claims are above the specialty average of 1,067.
Nationwide Obesity Medicine (Preventive Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Nekzad, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obesity 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 Nekzad.
One of 4 Obesity Medicine (Preventive Medicine) Physician providers enrolled in Illinois, 3 are shown here.
Frequently Asked Questions
What is Matin Nekzad, MD's specialty? ▼
Matin Nekzad, MD specializes in Obesity Medicine (Preventive Medicine) Physician and practices in Carterville, Illinois. Credentials: MD.
How much does Matin Nekzad, MD prescribe under Medicare Part D? ▼
In 2024, Matin Nekzad, MD wrote 15,006 Medicare Part D claims totaling $2.2M in drug costs for 519 beneficiaries.
Where is Matin Nekzad, MD located? ▼
Matin Nekzad, MD is located at 1006 S DIVISION ST, Carterville, IL, 62918. Phone: (618) 985-4841.
What is Matin Nekzad, MD's NPI number? ▼
Matin Nekzad, MD's National Provider Identifier (NPI) is 1679548689, issued on 02/22/2006.
Does Matin Nekzad, MD prescribe more brand-name or generic drugs? ▼
Matin Nekzad, MD's prescribing is 20% brand-name and 80% generic drugs by claim count, with $2.0M in brand drug costs.
Does Matin Nekzad, MD prescribe opioids? ▼
Yes, Matin Nekzad, MD had 873 opioid claims in 2024 with an opioid prescribing rate of 5.8%.
How many Obesity Medicine (Preventive Medicine) Physician providers are there in the US? ▼
There are 159 Obesity Medicine (Preventive Medicine) Physician providers across 37 states in the US. The average Obesity Medicine (Preventive Medicine) Physician provider writes 1,067 Medicare Part D claims per year.
What drugs does Matin Nekzad, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Matin Nekzad, MD's most frequently prescribed drugs include Atorvastatin Calcium, Hydrocodone-Acetaminophen, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Matin Nekzad, MD accept Medicare? ▼
Matin Nekzad, MD appears in CMS Medicare data with 15,006 Part D claims and 519 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Matin Nekzad, MD's credentials? ▼
Matin Nekzad, MD's NPI is 1679548689 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.