2026 NPPES data Radiation Oncology Physician NPI 1043846983 MD, PHD
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GUSTAV CEDERQUIST, MD, PHD

Radiation Oncology Physician in UNIONDALE, New York. 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
60
Medicare Part D claims · 33 beneficiaries · Radiation Oncology Physician avg: 186
What the federal data reveals: GUSTAV CEDERQUIST, MD, PHD is a Radiation Oncology Physician ([object Object]) practicing in UNIONDALE, New York with a Medicare Part D prescribing footprint of 60 claims across 33 beneficiaries .

What stands out: GUSTAV CEDERQUIST, MD, PHD filed 60 Medicare Part D claims in 2023 across UNIONDALE, New York. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GUSTAV CEDERQUIST, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 4 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

GUSTAV CEDERQUIST, MD, PHD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/22/2020

NPI 1043846983

Primary specialty

Radiation Oncology Physician

Mid-sized

6,018 US NPIs in this specialty

Medicare Part D claims

60 68% vs specialty avg

2023 prescription claims

Specialty avg: 186

Specialty distribution in New York

How Radiation Oncology Physician compares to other specialties among New York providers

New York providers

Radiation Oncology Physician share within New York

1. Radiation Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Radiation Oncology Physician share within New York

Specialty board-certification context

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

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

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

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

GUSTAV CEDERQUIST, MD, PHD is a Radiation Oncology Physician provider practicing in UNIONDALE, New York, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD, PHD. NPI: 1043846983. 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.

GUSTAV CEDERQUIST, MD, PHD appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding MD, PHD credentials at 1101 HEMPSTEAD TPKE, UNIONDALE, NY, 11553, with a listed phone of (516) 464-4513. NPI 1043846983 was issued on 03/22/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CEDERQUIST 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 60 prescription claims written by this provider, covering 33 Medicare beneficiaries and totaling roughly $3K 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.

Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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

1101 HEMPSTEAD TPKE
UNIONDALE, NY 11553

Provider Details

NPI 1043846983
Specialty Radiation Oncology Physician
Credentials MD, PHD
Gender Male
NPI Issued 03/22/2020

Hospital and facility affiliations

Facilities where GUSTAV CEDERQUIST, MD, PHD 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.

MEMORIAL RADIATION ONCOLOGY GROUP
UNIONDALE, NY
MEMORIAL SLOAN KETTERING CANCER CENTER AT BASKING RIDGE NEW JERSEY
BASKING RIDGE, NJ
MSK BERGEN
MONTVALE, NJ
MSK MONMOUTH
MIDDLETOWN, NJ

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — New York NYSBPMC 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 ~100K New York medical licensees in 2023 — they are NOT specific to GUSTAV CEDERQUIST, MD, PHD. To verify GUSTAV CEDERQUIST, MD, PHD's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

60
Total Claims
$3K
Total Drug Cost
33
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
68
Total Day Supply
1,318
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
2.32
Gender Split
39% female / 61% male

Radiation Oncology Physician Overview

How GUSTAV CEDERQUIST, MD, PHD fits within the Radiation Oncology Physician landscape nationally.

6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider

GUSTAV CEDERQUIST, MD, PHD's 60 claims are below the specialty average of 186.

Nearby Radiation Oncology Physician Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as CEDERQUIST.

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

Frequently Asked Questions

What is GUSTAV CEDERQUIST, MD, PHD's specialty?
GUSTAV CEDERQUIST, MD, PHD specializes in Radiation Oncology Physician and practices in UNIONDALE, New York. Credentials: MD, PHD.
How much does GUSTAV CEDERQUIST, MD, PHD prescribe under Medicare Part D?
In 2023, GUSTAV CEDERQUIST, MD, PHD wrote 60 Medicare Part D claims totaling $3K in drug costs for 33 beneficiaries.
Where is GUSTAV CEDERQUIST, MD, PHD located?
GUSTAV CEDERQUIST, MD, PHD is located at 1101 HEMPSTEAD TPKE, UNIONDALE, NY, 11553. Phone: (516) 464-4513.
What is GUSTAV CEDERQUIST, MD, PHD's NPI number?
GUSTAV CEDERQUIST, MD, PHD's National Provider Identifier (NPI) is 1043846983, issued on 03/22/2020.
How many Radiation Oncology Physician providers are there in the US?
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
Does GUSTAV CEDERQUIST, MD, PHD accept Medicare?
GUSTAV CEDERQUIST, MD, PHD appears in CMS Medicare data with 60 Part D claims and 33 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GUSTAV CEDERQUIST, MD, PHD's credentials?
GUSTAV CEDERQUIST, MD, PHD's NPI is 1043846983 with credentials MD, PHD. 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