2026 NPPES data Neurology with Special Qualifications in Child Neurology Physician NPI 1275543993 MD
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KARSTEN GAMMELTOFT, MD

Neurology with Special Qualifications in Child Neurology Physician in KNOXVILLE, Tennessee. 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
65
Medicare Part D claims · Neurology with Special Qualifications in Child Neurology Physician avg: 359
Industry payments
$155.02
16 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KARSTEN GAMMELTOFT, MD is a Neurology with Special Qualifications in Child Neurology Physician ([object Object]) practicing in KNOXVILLE, Tennessee with a Medicare Part D prescribing footprint of 65 claims . Industry payments of $155.02 across 16 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KARSTEN GAMMELTOFT, MD filed 65 Medicare Part D claims in 2023 across KNOXVILLE, Tennessee. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

KARSTEN GAMMELTOFT, 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).

KARSTEN GAMMELTOFT, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/08/2006

NPI 1275543993

Primary specialty

Neurology with Special Qualifications in Child Neurology Physician

Niche

1,803 US NPIs in this specialty

Medicare Part D claims

65 82% vs specialty avg

2023 prescription claims

Specialty avg: 359

Specialty distribution in Tennessee

How Neurology with Special Qualifications in Child Neurology Physician compares to other specialties among Tennessee providers

Tennessee providers

Neurology with Special Qualifications in Child Neurology Physician share within Tennessee

1. Neurology with Special Qualifications in Child Neurology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Neurology with Special Qualifications in Child Neurology Physician share within Tennessee

Specialty board-certification context

Estimated specialty board-certified rate — Neurology with Special Qualifications in Child Neurology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Neurology with Special Qualifications in Child Neurology Physician ABMS/AOA estimate

Est. board-certified rate (Neurology with Special Qualifications in Child Neurology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Neurology with Special Qualifications in Child 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).

KARSTEN GAMMELTOFT, MD is a Neurology with Special Qualifications in Child Neurology Physician provider practicing in KNOXVILLE, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1275543993. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KARSTEN GAMMELTOFT, MD appears in the CMS NPPES registry as a Neurology with Special Qualifications in Child Neurology Physician provider holding MD credentials at 2018 W CLINCH AVENUE, KNOXVILLE, TN, 37916, with a listed phone of (865) 523-5437. NPI 1275543993 was issued on 08/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GAMMELTOFT 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 65 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $1K 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.

Neurology with Special Qualifications in Child Neurology Physician is a narrow specialty nationwide, with 1,803 enrolled providers across 51 states and an average of 359 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

2018 W CLINCH AVENUE
KNOXVILLE, TN 37916

Provider Details

NPI 1275543993
Specialty Neurology with Special Qualifications in Child Neurology Physician
Credentials MD
Gender Male
NPI Issued 08/08/2006

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 KARSTEN GAMMELTOFT, MD. Source: openpaymentsdata.cms.gov.

Total received

$155

Largest payer

UCB, 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.

65
Total Claims
$1K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
69
Total Day Supply
2,041
Brand Drug Cost
$0
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
20.1 years
Avg HCC Risk Score
0.72

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Levetiracetam
27
Oxcarbazepine
11

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

Neurology with Special Qualifications in Child Neurology Physician Overview

How KARSTEN GAMMELTOFT, MD fits within the Neurology with Special Qualifications in Child Neurology Physician landscape nationally.

1,803
Neurology with Special Qualifications in Child Neurology Physician Providers in US
51
States with Neurology with Special Qualifications in Child Neurology Physician
359
Avg Claims per Provider

KARSTEN GAMMELTOFT, MD's 65 claims are below the specialty average of 359.

Nearby Neurology with Special Qualifications in Child Neurology Physician Providers in Tennessee

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

Compare Neurology with Special Qualifications in Child Neurology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KARSTEN GAMMELTOFT, MD's specialty?
KARSTEN GAMMELTOFT, MD specializes in Neurology with Special Qualifications in Child Neurology Physician and practices in KNOXVILLE, Tennessee. Credentials: MD.
How much does KARSTEN GAMMELTOFT, MD prescribe under Medicare Part D?
In 2023, KARSTEN GAMMELTOFT, MD wrote 65 Medicare Part D claims totaling $1K in drug costs for N/A beneficiaries.
Where is KARSTEN GAMMELTOFT, MD located?
KARSTEN GAMMELTOFT, MD is located at 2018 W CLINCH AVENUE, KNOXVILLE, TN, 37916. Phone: (865) 523-5437.
What is KARSTEN GAMMELTOFT, MD's NPI number?
KARSTEN GAMMELTOFT, MD's National Provider Identifier (NPI) is 1275543993, issued on 08/08/2006.
How many Neurology with Special Qualifications in Child Neurology Physician providers are there in the US?
There are 1,803 Neurology with Special Qualifications in Child Neurology Physician providers across 51 states in the US. The average Neurology with Special Qualifications in Child Neurology Physician provider writes 359 Medicare Part D claims per year.
What drugs does KARSTEN GAMMELTOFT, MD prescribe most often?
Based on 2023 Medicare Part D data, KARSTEN GAMMELTOFT, MD's most frequently prescribed drugs include Levetiracetam, Oxcarbazepine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KARSTEN GAMMELTOFT, MD accept Medicare?
KARSTEN GAMMELTOFT, MD appears in CMS Medicare data with 65 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KARSTEN GAMMELTOFT, MD's credentials?
KARSTEN GAMMELTOFT, MD's NPI is 1275543993 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