2026 NPPES data Clinical Neurophysiology Physician NPI 1972845766 M.D
Verify on CMS →

Matthew Schrettner, M.D

Clinical Neurophysiology Physician in Greer, South Carolina. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 639 in Clinical Neurophysiology 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
2K
Medicare Part D claims · 237 beneficiaries · Clinical Neurophysiology Physician avg: 2K
Industry payments
$65.38
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Matthew Schrettner, M.D filed 1,947 Medicare Part D claims in 2023 as a Clinical Neurophysiology Physician in Greer, South Carolina.

2K
Part D claims, 2023
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.

Matthew Schrettner, M.D's Medicare Part D volume vs every U.S. prescriber

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

1,947 Top 16% higher than 84% 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%). This entry sits in this band. 2K+: 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)

Matthew Schrettner, M.D 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 Matthew Schrettner, M.D?

Quality data not reported

NPI registry status

Active

Issued 03/20/2013

NPI 1972845766

Primary specialty

Clinical Neurophysiology Physician

Niche

639 US NPIs in this specialty

Medicare Part D claims

1,947 28% vs specialty avg

2023 prescription claims

Specialty avg: 1,523

Specialty distribution in South Carolina

How Clinical Neurophysiology Physician compares to other specialties among South Carolina providers

South Carolina providers

Largest specialties in South Carolina (% of in-state providers)

Pharmacist - 6.2%Pharmacist6.2%Mental Health Counselor - 5.1%Mental Health Counselor5.1%Family Nurse Practitioner - 4.6%Family Nurse Practitioner4.6%Physical Therapist - 4.5%Physical Therapist4.5%Behavior Technician - 3.8%Behavior Technician3.8%Speech-Language Pathologist - 3.7%Speech-Language Pathologist3.7%Clinical Neurophysiology Physician - 0%Clinical Neurophysiology Physician0%
Largest specialties in South Carolina (% of in-state 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 Clinical Neurophysiology Physician. Verify directly:

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).

Matthew Schrettner, M.D appears in the CMS NPPES registry as a Clinical Neurophysiology Physician provider holding M.D credentials at 109 PHYSICIANS DR STE C, Greer, SC, 29650, with a listed phone of (864) 797-8800. NPI 1972845766 was issued on 03/20/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Schrettner 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 1,947 prescription claims written by this provider, covering 237 Medicare beneficiaries and totaling roughly $861K in drug spend. 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.

Clinical Neurophysiology Physician is a narrow specialty nationwide, with 639 enrolled providers across 50 states and an average of 1,523 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

109 PHYSICIANS DR STE C
Greer, SC 29650

Provider Details

NPI 1972845766
Specialty Clinical Neurophysiology Physician
Credentials M.D
Gender Male
NPI Issued 03/20/2013

Hospital and facility affiliations

Facilities where Matthew Schrettner, 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.

Prisma Health University Medical Group
Greenville, SC

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 Matthew Schrettner, M.D. Source: openpaymentsdata.cms.gov.

Total received

$65

Largest payer

LivaNova USA, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,947
Total Claims
$861K
Total Drug Cost
237
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,832
Total Day Supply
112,171
Generic Drug Cost
$180K

Patient Demographics

Average Patient Age
57.1 years
Avg HCC Risk Score
1.35
Gender Split
52% female / 48% male
Age Distribution
<65: 133, 65-74: 66, 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 Matthew Schrettner, M.D 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
Levetiracetam
337
Lamotrigine
210
Lacosamide
167
Zonisamide
155
Clonazepam
85
Oxcarbazepine
72
Clobazam
66
Gabapentin
66
Divalproex Sodium Er
Divalproex Sodium
62
Aptiom
Eslicarbazepine Acetate
58

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

Clinical Neurophysiology Physician Overview

How Matthew Schrettner, M.D fits within the Clinical Neurophysiology Physician landscape nationally.

639
Clinical Neurophysiology Physician Providers in US
50
States with Clinical Neurophysiology Physician
1,523
Avg Claims per Provider

Matthew Schrettner, M.D's 1,947 claims are above the specialty average of 1,523.

Nearby Clinical Neurophysiology Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Schrettner.

Compare Clinical Neurophysiology 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 South Carolina medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Clinical Neurophysiology 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.

Frequently Asked Questions

What is Matthew Schrettner, M.D's specialty?
Matthew Schrettner, M.D specializes in Clinical Neurophysiology Physician and practices in Greer, South Carolina. Credentials: M.D.
How much does Matthew Schrettner, M.D prescribe under Medicare Part D?
In 2023, Matthew Schrettner, M.D wrote 1,947 Medicare Part D claims totaling $861K in drug costs for 237 beneficiaries.
Where is Matthew Schrettner, M.D located?
Matthew Schrettner, M.D is located at 109 PHYSICIANS DR STE C, Greer, SC, 29650. Phone: (864) 797-8800.
What is Matthew Schrettner, M.D's NPI number?
Matthew Schrettner, M.D's National Provider Identifier (NPI) is 1972845766, issued on 03/20/2013.
How many Clinical Neurophysiology Physician providers are there in the US?
There are 639 Clinical Neurophysiology Physician providers across 50 states in the US. The average Clinical Neurophysiology Physician provider writes 1,523 Medicare Part D claims per year.
What drugs does Matthew Schrettner, M.D prescribe most often?
Based on 2023 Medicare Part D data, Matthew Schrettner, M.D's most frequently prescribed drugs include Levetiracetam, Lamotrigine, Lacosamide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Matthew Schrettner, M.D accept Medicare?
Matthew Schrettner, M.D appears in CMS Medicare data with 1,947 Part D claims and 237 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Matthew Schrettner, M.D's credentials?
Matthew Schrettner, M.D's NPI is 1972845766 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

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.