2026 NPPES data Hematology & Oncology Physician NPI 1033162904 MD
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YAMIL ARBAJE, MD

Hematology & Oncology Physician in MADISON, Wisconsin. 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
1K
Medicare Part D claims · 290 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

YAMIL ARBAJE, MD filed 1,160 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in MADISON, Wisconsin, prescribing 92% generic.

1K
Part D claims, 2023
92%
generic prescribing
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.

YAMIL ARBAJE, MD's Medicare Part D volume vs every U.S. prescriber

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

1,160 Top 23% higher than 77% 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%). This entry sits in this band. 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)

YAMIL ARBAJE, 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 YAMIL ARBAJE, MD?

Quality data not reported

NPI registry status

Active

Issued 05/19/2006

NPI 1033162904

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

1,160 37% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in Wisconsin

How Hematology & Oncology Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Hematology & Oncology Physician share within Wisconsin

1. Hematology & Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology & Oncology Physician share within Wisconsin

Specialty board-certification context

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

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

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

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

YAMIL ARBAJE, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 1211 FISH HATCHERY RD., MADISON, WI, 53715, with a listed phone of (608) 252-8000. NPI 1033162904 was issued on 05/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARBAJE 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 1,160 prescription claims written by this provider, covering 290 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 2.5%. 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.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 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

1211 FISH HATCHERY RD.
MADISON, WI 53715

Provider Details

NPI 1033162904
Specialty Hematology & Oncology Physician
Credentials MD
Gender Male
NPI Issued 05/19/2006

Hospital and facility affiliations

Facilities where YAMIL ARBAJE, 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.

DEAN HEALTH SYSTEMS INC
MADISON, WI

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

Brand vs generic prescribing mix · Generic-heavy

YAMIL ARBAJE, MD — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 1,160 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

1,160
Total Claims
$1.0M
Total Drug Cost
290
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,686
Total Day Supply
77,804
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$1.0M
Generic Drug Cost
$45K
Opioid Claims
29 (2.5% rate)

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
1.21
Gender Split
93% female / 7% male
Age Distribution
<65: 12, 65-74: 147, 75-84: 108, 85+: 23

Top Prescribed Drugs (Medicare Part D)

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

What YAMIL ARBAJE, MD 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
Anastrozole
738
Exemestane
58
Verzenio
Abemaciclib
35
Ondansetron Hcl
33
Hydroxyurea
28
Letrozole
25
Tamoxifen Citrate
23
Prednisone
21
Prochlorperazine Maleate
19
Dexamethasone
16

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

Hematology & Oncology Physician Overview

How YAMIL ARBAJE, MD fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

YAMIL ARBAJE, MD's 1,160 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Wisconsin

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

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is YAMIL ARBAJE, MD's specialty?
YAMIL ARBAJE, MD specializes in Hematology & Oncology Physician and practices in MADISON, Wisconsin. Credentials: MD.
How much does YAMIL ARBAJE, MD prescribe under Medicare Part D?
In 2023, YAMIL ARBAJE, MD wrote 1,160 Medicare Part D claims totaling $1.0M in drug costs for 290 beneficiaries.
Where is YAMIL ARBAJE, MD located?
YAMIL ARBAJE, MD is located at 1211 FISH HATCHERY RD., MADISON, WI, 53715. Phone: (608) 252-8000.
What is YAMIL ARBAJE, MD's NPI number?
YAMIL ARBAJE, MD's National Provider Identifier (NPI) is 1033162904, issued on 05/19/2006.
Does YAMIL ARBAJE, MD prescribe more brand-name or generic drugs?
YAMIL ARBAJE, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $1.0M in brand drug costs.
Does YAMIL ARBAJE, MD prescribe opioids?
Yes, YAMIL ARBAJE, MD had 29 opioid claims in 2023 with an opioid prescribing rate of 2.5%.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does YAMIL ARBAJE, MD prescribe most often?
Based on 2023 Medicare Part D data, YAMIL ARBAJE, MD's most frequently prescribed drugs include Anastrozole, Exemestane, Verzenio. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does YAMIL ARBAJE, MD accept Medicare?
YAMIL ARBAJE, MD appears in CMS Medicare data with 1,160 Part D claims and 290 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify YAMIL ARBAJE, MD's credentials?
YAMIL ARBAJE, MD's NPI is 1033162904 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