2026 NPPES data Medical Oncology Physician NPI 1306804489 M.D.
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ALBERT VAN AMBURG, M.D.

Medical Oncology Physician in CHESTERFIELD, Missouri. 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
492
Medicare Part D claims · 105 beneficiaries · Medical Oncology Physician avg: 689
Industry payments
$1.3K
66 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ALBERT VAN AMBURG, M.D. is a Medical Oncology Physician ([object Object]) practicing in CHESTERFIELD, Missouri with a Medicare Part D prescribing footprint of 492 claims across 105 beneficiaries . Industry payments of $1.3K across 66 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ALBERT VAN AMBURG, M.D. filed 492 Medicare Part D claims in 2023 across CHESTERFIELD, Missouri. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ALBERT VAN AMBURG, 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).

ALBERT VAN AMBURG, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/01/2006

NPI 1306804489

Primary specialty

Medical Oncology Physician

Niche

3,792 US NPIs in this specialty

Medicare Part D claims

492 29% vs specialty avg

2023 prescription claims

Specialty avg: 689

Specialty distribution in Missouri

How Medical Oncology Physician compares to other specialties among Missouri providers

Missouri providers

Medical Oncology Physician share within Missouri

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

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).

ALBERT VAN AMBURG, M.D. is a Medical Oncology Physician provider practicing in CHESTERFIELD, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1306804489. 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.

ALBERT VAN AMBURG, M.D. appears in the CMS NPPES registry as a Medical Oncology Physician provider holding M.D. credentials at 232 S WOODS MILL RD, CHESTERFIELD, MO, 63017, with a listed phone of (314) 205-6737. NPI 1306804489 was issued on 05/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what VAN AMBURG 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 492 prescription claims written by this provider, covering 105 Medicare beneficiaries and totaling roughly $873K in drug spend, with an opioid prescribing rate of 4.7%. 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

232 S WOODS MILL RD
CHESTERFIELD, MO 63017

Provider Details

NPI 1306804489
Specialty Medical Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 05/01/2006

Hospital and facility affiliations

Facilities where ALBERT VAN AMBURG, 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.

VAN AMBURG AND BUSIEK MDS LLC
CHESTERFIELD, MO

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 ALBERT VAN AMBURG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.3K

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.

492
Total Claims
$873K
Total Drug Cost
105
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
786
Total Day Supply
21,399
Generic Drug Cost
$75K
Opioid Claims
23 (4.7% rate)
Antibiotic Claims
30

Patient Demographics

Average Patient Age
76.5 years
Avg HCC Risk Score
2.12
Gender Split
57% female / 43% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydroxyurea
52
Dexamethasone
32
Anastrozole
31
Tamoxifen Citrate
25
Xarelto
Rivaroxaban
22
Anagrelide Hcl
19
Levofloxacin
16
Brukinsa
Zanubrutinib
15
Prochlorperazine Maleate
15
Prednisone
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 ALBERT VAN AMBURG, M.D. 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

ALBERT VAN AMBURG, M.D.'s 492 claims are below the specialty average of 689.

Nearby Medical Oncology Physician Providers in Missouri

Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as VAN AMBURG.

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

Frequently Asked Questions

What is ALBERT VAN AMBURG, M.D.'s specialty?
ALBERT VAN AMBURG, M.D. specializes in Medical Oncology Physician and practices in CHESTERFIELD, Missouri. Credentials: M.D..
How much does ALBERT VAN AMBURG, M.D. prescribe under Medicare Part D?
In 2023, ALBERT VAN AMBURG, M.D. wrote 492 Medicare Part D claims totaling $873K in drug costs for 105 beneficiaries.
Where is ALBERT VAN AMBURG, M.D. located?
ALBERT VAN AMBURG, M.D. is located at 232 S WOODS MILL RD, CHESTERFIELD, MO, 63017. Phone: (314) 205-6737.
What is ALBERT VAN AMBURG, M.D.'s NPI number?
ALBERT VAN AMBURG, M.D.'s National Provider Identifier (NPI) is 1306804489, issued on 05/01/2006.
Does ALBERT VAN AMBURG, M.D. prescribe opioids?
Yes, ALBERT VAN AMBURG, M.D. had 23 opioid claims in 2023 with an opioid prescribing rate of 4.7%.
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 ALBERT VAN AMBURG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ALBERT VAN AMBURG, M.D.'s most frequently prescribed drugs include Hydroxyurea, Dexamethasone, Anastrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALBERT VAN AMBURG, M.D. accept Medicare?
ALBERT VAN AMBURG, M.D. appears in CMS Medicare data with 492 Part D claims and 105 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALBERT VAN AMBURG, M.D.'s credentials?
ALBERT VAN AMBURG, M.D.'s NPI is 1306804489 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