2026 NPPES data Hematology & Oncology Physician NPI 1184743148 M.D.
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KEELY HACK, M.D.

Hematology & Oncology Physician in SIOUX FALLS, South Dakota. 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
527
Medicare Part D claims · 124 beneficiaries · Hematology & Oncology Physician avg: 847
MIPS score
76.6912/100
▼ 6 pts below national avg 83.1 · [object Object]
What the federal data reveals: KEELY HACK, M.D. is a Hematology & Oncology Physician ([object Object]) practicing in SIOUX FALLS, South Dakota with a Medicare Part D prescribing footprint of 527 claims across 124 beneficiaries . Their CMS MIPS Final Score of 76.6912/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: KEELY HACK, M.D. reported a CMS MIPS final score of 76.6912 out of 100, below the 83.1 national average, and filed 527 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KEELY HACK, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

KEELY HACK, M.D. at a glance

Below national average

NPI registry status

Active

Issued 03/28/2007

NPI 1184743148

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

527 38% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

76.6912/100 6.408799999999999% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in South Dakota

How Hematology & Oncology Physician compares to other specialties among South Dakota providers

South Dakota providers

Hematology & Oncology Physician share within South Dakota

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

Medicare quality performance — MIPS

KEELY HACK, M.D.'s 2023 MIPS final score plotted against the Hematology & Oncology Physician national average

Below national average
MIPS Final Score
76.6912/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 76.6912/100 vs national avg 83.1

0%100%National avg83%76.7%
MIPS final score (Hematology & Oncology Physician) — 76.6912/100 vs national avg 83.1

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).

KEELY HACK, M.D. is a Hematology & Oncology Physician provider practicing in SIOUX FALLS, South Dakota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1184743148. 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.

KEELY HACK, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 1309 W 17TH ST STE 101, SIOUX FALLS, SD, 57104, with a listed phone of (605) 328-8000. NPI 1184743148 was issued on 03/28/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HACK 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 527 prescription claims written by this provider, covering 124 Medicare beneficiaries and totaling roughly $1.3 million 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 76.6912/100 for the 2023 performance year (Quality 78.5693, Cost 44.5681), compared with the national average of 83.1.

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

1309 W 17TH ST STE 101
SIOUX FALLS, SD 57104

Provider Details

NPI 1184743148
Specialty Hematology & Oncology Physician
Credentials M.D.
Gender Female
NPI Issued 03/28/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

76.6912
Final Score
Avg: 83.1
78.5693
Quality
44.5681
Cost
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where KEELY HACK, 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.

SANFORD HEALTH NETWORK
WORTHINGTON, MN
SANFORD MEDICAL CENTER
SIOUX FALLS, SD

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

Medicare Part D Prescribing Data

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

527
Total Claims
$1.3M
Total Drug Cost
124
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
704
Total Day Supply
17,855
Generic Drug Cost
$13K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
2.03
Gender Split
76% female / 24% 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
Letrozole
96
Dexamethasone
40
Acyclovir
28
Olanzapine
20
Tamoxifen Citrate
19
Anastrozole
18
Jakafi
Ruxolitinib Phosphate
17
Prochlorperazine Maleate
17
Lidocaine-Prilocaine
Lidocaine/Prilocaine
16
Fluconazole
14

* 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 KEELY HACK, M.D. 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

KEELY HACK, M.D.'s 527 claims are below the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in South Dakota

Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as HACK.

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

Frequently Asked Questions

What is KEELY HACK, M.D.'s specialty?
KEELY HACK, M.D. specializes in Hematology & Oncology Physician and practices in SIOUX FALLS, South Dakota. Credentials: M.D..
How much does KEELY HACK, M.D. prescribe under Medicare Part D?
In 2023, KEELY HACK, M.D. wrote 527 Medicare Part D claims totaling $1.3M in drug costs for 124 beneficiaries.
What is KEELY HACK, M.D.'s Medicare quality score?
KEELY HACK, M.D. has a CMS MIPS Final Score of 76.6912/100 (Quality: 78.5693, Cost: 44.5681). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is KEELY HACK, M.D. located?
KEELY HACK, M.D. is located at 1309 W 17TH ST STE 101, SIOUX FALLS, SD, 57104. Phone: (605) 328-8000.
What is KEELY HACK, M.D.'s NPI number?
KEELY HACK, M.D.'s National Provider Identifier (NPI) is 1184743148, issued on 03/28/2007.
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 KEELY HACK, M.D. prescribe most often?
Based on 2023 Medicare Part D data, KEELY HACK, M.D.'s most frequently prescribed drugs include Letrozole, Dexamethasone, Acyclovir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KEELY HACK, M.D. accept Medicare?
KEELY HACK, M.D. appears in CMS Medicare data with 527 Part D claims and 124 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KEELY HACK, M.D.'s credentials?
KEELY HACK, M.D.'s NPI is 1184743148 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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