2026 NPPES data Medical Oncology Physician NPI 1386609394 MD
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LARRY SCHLABACH, MD

Medical Oncology Physician in CHATTANOOGA, 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
417
Medicare Part D claims · 94 beneficiaries · Medical Oncology Physician avg: 689
Industry payments
$75.79
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

LARRY SCHLABACH, MD filed 417 Medicare Part D claims in 2023 as a Medical Oncology Physician in CHATTANOOGA, Tennessee.

417
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.

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

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

417 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)

LARRY SCHLABACH, 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 LARRY SCHLABACH, MD?

Quality data not reported

NPI registry status

Active

Issued 04/20/2006

NPI 1386609394

Primary specialty

Medical Oncology Physician

Niche

3,792 US NPIs in this specialty

Medicare Part D claims

417 39% vs specialty avg

2023 prescription claims

Specialty avg: 689

Specialty distribution in Tennessee

How Medical Oncology Physician compares to other specialties among Tennessee providers

Tennessee providers

Medical Oncology Physician share within Tennessee

1. Medical Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Oncology Physician share within Tennessee

Specialty board-certification context

Estimated specialty board-certified rate — Medical Oncology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Medical Oncology Physician ABMS/AOA estimate

Est. board-certified rate (Medical Oncology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Oncology 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).

LARRY SCHLABACH, MD is a Medical Oncology Physician provider practicing in CHATTANOOGA, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1386609394. 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.

LARRY SCHLABACH, MD appears in the CMS NPPES registry as a Medical Oncology Physician provider holding MD credentials at 1032 MCCALLIE AVE STE 200, CHATTANOOGA, TN, 37403, with a listed phone of (423) 752-5004. NPI 1386609394 was issued on 04/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SCHLABACH 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 417 prescription claims written by this provider, covering 94 Medicare beneficiaries and totaling roughly $538K in drug spend, with an opioid prescribing rate of 5.3%. 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.

Medical Oncology Physician is a narrow specialty nationwide, with 3,792 enrolled providers across 53 states and an average of 689 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

1032 MCCALLIE AVE STE 200
CHATTANOOGA, TN 37403

Provider Details

NPI 1386609394
Specialty Medical Oncology Physician
Credentials MD
Gender Male
NPI Issued 04/20/2006

Hospital and facility affiliations

Facilities where LARRY SCHLABACH, 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.

TENNESSEE ONCOLOGY PLLC
CHATTANOOGA, TN

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 LARRY SCHLABACH, MD. Source: openpaymentsdata.cms.gov.

Total received

$76

Largest payer

Novartis Pharmaceuticals Corporation

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.

417
Total Claims
$538K
Total Drug Cost
94
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
593
Total Day Supply
15,848
Generic Drug Cost
$48K
Opioid Claims
22 (5.3% rate)
Antibiotic Claims
11

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
2.03
Gender Split
63% female / 37% male
Age Distribution
<65: 11, 65-74: 46, 75-84: 24, 85+: 13

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Anastrozole
38
Acyclovir
25
Prednisone
22
Hydroxyurea
20
Letrozole
17
Ondansetron Odt
Ondansetron
17
Eliquis
Apixaban
15
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
15
Potassium Chloride
14
Xarelto
Rivaroxaban
14

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

Medical Oncology Physician Overview

How LARRY SCHLABACH, MD fits within the Medical Oncology Physician landscape nationally.

3,792
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider

LARRY SCHLABACH, MD's 417 claims are below the specialty average of 689.

Nearby Medical Oncology Physician Providers in Tennessee

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

Compare Medical Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LARRY SCHLABACH, MD's specialty?
LARRY SCHLABACH, MD specializes in Medical Oncology Physician and practices in CHATTANOOGA, Tennessee. Credentials: MD.
How much does LARRY SCHLABACH, MD prescribe under Medicare Part D?
In 2023, LARRY SCHLABACH, MD wrote 417 Medicare Part D claims totaling $538K in drug costs for 94 beneficiaries.
Where is LARRY SCHLABACH, MD located?
LARRY SCHLABACH, MD is located at 1032 MCCALLIE AVE STE 200, CHATTANOOGA, TN, 37403. Phone: (423) 752-5004.
What is LARRY SCHLABACH, MD's NPI number?
LARRY SCHLABACH, MD's National Provider Identifier (NPI) is 1386609394, issued on 04/20/2006.
Does LARRY SCHLABACH, MD prescribe opioids?
Yes, LARRY SCHLABACH, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 5.3%.
How many Medical Oncology Physician providers are there in the US?
There are 3,792 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does LARRY SCHLABACH, MD prescribe most often?
Based on 2023 Medicare Part D data, LARRY SCHLABACH, MD's most frequently prescribed drugs include Anastrozole, Acyclovir, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LARRY SCHLABACH, MD accept Medicare?
LARRY SCHLABACH, MD appears in CMS Medicare data with 417 Part D claims and 94 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LARRY SCHLABACH, MD's credentials?
LARRY SCHLABACH, MD's NPI is 1386609394 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