2026 NPPES data Hematology & Oncology Physician NPI 1144210402 PAC
Verify on CMS →

KATHLEEN TONKIN, PAC

Hematology & Oncology Physician in LINCOLN, Nebraska. 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 · 293 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.6817/100
▼ 9 pts below national avg 83.1 · [object Object]
Industry payments
$1.0K
52 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KATHLEEN TONKIN, PAC is a Hematology & Oncology Physician ([object Object]) practicing in LINCOLN, Nebraska with a Medicare Part D prescribing footprint of 1K claims across 293 beneficiaries — 17% brand-name prescribing . Their CMS MIPS Final Score of 73.6817/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $1.0K across 52 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KATHLEEN TONKIN, PAC reported a CMS MIPS final score of 73.6817 out of 100, below the 83.1 national average, and filed 1,106 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)

KATHLEEN TONKIN, PAC practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

KATHLEEN TONKIN, PAC at a glance

Below national average

NPI registry status

Active

Issued 10/26/2005

NPI 1144210402

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

1,106 31% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

73.6817/100 9.418299999999988% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Nebraska

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

Nebraska providers

Hematology & Oncology Physician share within Nebraska

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

Medicare quality performance — MIPS

KATHLEEN TONKIN, PAC's 2023 MIPS final score plotted against the Hematology & Oncology Physician national average

Below national average
MIPS Final Score
73.6817/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 73.6817/100 vs national avg 83.1

0%100%National avg83%73.7%
MIPS final score (Hematology & Oncology Physician) — 73.6817/100 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).

KATHLEEN TONKIN, PAC is a Hematology & Oncology Physician provider practicing in LINCOLN, Nebraska, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PAC. NPI: 1144210402. 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.

KATHLEEN TONKIN, PAC appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding PAC credentials at 4101 TIGER LILY RD STE 100, LINCOLN, NE, 68516, with a listed phone of (402) 420-7000. NPI 1144210402 was issued on 10/26/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what TONKIN 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 1,106 prescription claims written by this provider, covering 293 Medicare beneficiaries and totaling roughly $2.5 million in drug spend, split 17% brand-name and 83% generic by claim count, with an opioid prescribing rate of 12.6%. 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 73.6817/100 for the 2023 performance year (Quality 86.3876, Cost 37.0295), 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

4101 TIGER LILY RD STE 100
LINCOLN, NE 68516

Provider Details

NPI 1144210402
Specialty Hematology & Oncology Physician
Credentials PAC
Gender Female
NPI Issued 10/26/2005

CMS Quality Score (MIPS)

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

73.6817
Final Score
Avg: 83.1
86.3876
Quality
37.0295
Cost
82
Promoting Interoperability

Reporting: Group practice

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 KATHLEEN TONKIN, PAC. Source: openpaymentsdata.cms.gov.

Total received

$1.0K

Largest payer

Janssen Biotech, Inc.

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.

Brand vs generic prescribing mix · Typical

KATHLEEN TONKIN, PAC — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 1,106 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.

1,106
Total Claims
$2.5M
Total Drug Cost
293
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,353
Total Day Supply
32,270
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$2.4M
Generic Drug Cost
$104K
Opioid Claims
139 (12.6% rate)
Antibiotic Claims
47

Patient Demographics

Average Patient Age
73.1 years
Avg HCC Risk Score
2.40
Gender Split
57% female / 43% male
Age Distribution
<65: 23, 65-74: 153, 75-84: 98, 85+: 19

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Prednisone
62
Ondansetron Hcl
54
Acyclovir
46
Imbruvica
Ibrutinib
45
Abiraterone Acetate
42
Potassium Chloride
41
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
36
Omeprazole
35
Oxycodone Hcl
34
Gabapentin
33

* 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 KATHLEEN TONKIN, PAC 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

KATHLEEN TONKIN, PAC's 1,106 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Nebraska

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

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

Frequently Asked Questions

What is KATHLEEN TONKIN, PAC's specialty?
KATHLEEN TONKIN, PAC specializes in Hematology & Oncology Physician and practices in LINCOLN, Nebraska. Credentials: PAC.
How much does KATHLEEN TONKIN, PAC prescribe under Medicare Part D?
In 2023, KATHLEEN TONKIN, PAC wrote 1,106 Medicare Part D claims totaling $2.5M in drug costs for 293 beneficiaries.
What is KATHLEEN TONKIN, PAC's Medicare quality score?
KATHLEEN TONKIN, PAC has a CMS MIPS Final Score of 73.6817/100 (Quality: 86.3876, Cost: 37.0295). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is KATHLEEN TONKIN, PAC located?
KATHLEEN TONKIN, PAC is located at 4101 TIGER LILY RD STE 100, LINCOLN, NE, 68516. Phone: (402) 420-7000.
What is KATHLEEN TONKIN, PAC's NPI number?
KATHLEEN TONKIN, PAC's National Provider Identifier (NPI) is 1144210402, issued on 10/26/2005.
Does KATHLEEN TONKIN, PAC prescribe more brand-name or generic drugs?
KATHLEEN TONKIN, PAC's prescribing is 17% brand-name and 83% generic drugs by claim count, with $2.4M in brand drug costs.
Does KATHLEEN TONKIN, PAC prescribe opioids?
Yes, KATHLEEN TONKIN, PAC had 139 opioid claims in 2023 with an opioid prescribing rate of 12.6%.
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 KATHLEEN TONKIN, PAC prescribe most often?
Based on 2023 Medicare Part D data, KATHLEEN TONKIN, PAC's most frequently prescribed drugs include Prednisone, Ondansetron Hcl, Acyclovir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHLEEN TONKIN, PAC accept Medicare?
KATHLEEN TONKIN, PAC appears in CMS Medicare data with 1,106 Part D claims and 293 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHLEEN TONKIN, PAC's credentials?
KATHLEEN TONKIN, PAC's NPI is 1144210402 with credentials PAC. 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