Dr. Nicolas Tiva Kummer, MD, PhD

  • Wenatchee, WA
  • Radiation oncologist
NPI1033403852PAC ID8426342189
Medicare services, 2024
4,218
Medicare patients, 2024
343
Part D claims, 2024
287
Publications
4
Hospital affiliations
2
Practice address
1201 N Miller St, Wenatchee, WA 98801
Practice phone
Call (509) 662-1511
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Confluence Health

Wenatchee, Washington

See all 5 affiliations

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Dr. Nicolas Tiva Kummer is a radiation oncologist in Wenatchee, Washington

Dr. Kummer practices at Confluence Health in Wenatchee, Washington.

Dr. Kummer's NPI, 1033403852, was assigned on June 9, 2011. Dr. Kummer graduated from New York Medical College in 2011. Dr. Kummer holds Washington license MD60662907.

NPI and contact details
Medicare PAC ID
8426342189
NPI enumeration date
June 9, 2011
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(509) 662-1511
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
41
Medical school graduation
2011

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Nicolas Tiva Kummer practices at Confluence Health in Wenatchee, Washington

Dr. Kummer's primary practice is Confluence Health, at 1201 N Miller St, Wenatchee, WA 98801 in Chelan County. The practice phone is (509) 662-1511.

  • Confluence Health
    1201 N Miller St, Wenatchee, WA 98801 · Chelan CountyPhone(509) 662-1511

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Nicolas Tiva Kummer is affiliated with 3 sites of care and 2 medical groups

Dr. Kummer's primary practice is Confluence Health in Wenatchee, Washington. Dr. Kummer is also affiliated with Confluence Health Hospital | Central Campus. The medical group on file is Confluence Health. Dmand AI also links Dr. Kummer to 1 more hospital and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Kummer

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Nicolas Tiva Kummer's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kummer practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Confluence HealthAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Nicolas Tiva Kummer is one of 162 radiation oncologists in Washington

Radiation oncology is Dr. Kummer's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Kummer is licensed in Washington.

Specialties and state licenses

  • Radiation oncology, WashingtonPrimaryLicense MD60662907 · taxonomy 2085R0001X

Radiation oncologists near Dr. Kummer

Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.

162radiation oncologists in Washington
5radiation oncologists in Wenatchee

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Nicolas Tiva Kummer billed Medicare for 4,218 services in 2024

CMS data shows 4,218 Medicare services from Dr. Kummer across 28 procedure codes in 2024, for 343 Medicare patients. Medicare paid $758,147 for them. Every service was in an office.

Medicare services, 20244,218
Medicare patients343
Paid by Medicare$758,147
Procedure codes28

Dr. Kummer's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 3,0342024: 2,70211%
Other services
2023: 1,4382024: 1,14720%
Office and hospital visits
2023: 3692024: 369No change

Dr. Kummer compared with the Washington median for radiation oncologists, 2024

  • Dr. Kummer
  • Washington median
Medicare services
4,218vs 1,1873.6 times
Medicare patients
343vs 18684% above
Part D claims
187vs 444.3 times

Medians across 156 radiation oncologists in Washington with Dmand AI profiles that report each measure.

Dr. Kummer's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Kummer

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Nicolas Tiva Kummer treated 343 Medicare patients in 2024, average age 76

CMS counts 343 Medicare patients who saw Dr. Kummer in 2024. The largest group is 65 to 74, with 152 patients. 75% of them have cancer, and 72% have high blood pressure. 14% are also on Medicaid. Their average risk score is 1.82, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Kummer's median patient age at 73, with 43% women.

Medicare patients, 2024343
Average age76
Average risk score1.82
Also on Medicaid14%

Dr. Kummer's Medicare patients by age, 2024

Dr. Kummer's Medicare patients by sex, 2024

  • Women15746%
  • Men18654%

Chronic conditions among Dr. Kummer's Medicare patients, 2024

  1. Cancer75%
  2. High blood pressure72%
  3. High cholesterol62%
  4. Arthritis37%
  5. Chronic kidney disease27%
  6. Diabetes26%
  7. COPD23%
  8. Ischemic heart disease22%

Share of Medicare patients with each condition. A patient can have several.

Dr. Kummer's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 73

Patient panel by sex, all payers

  • Women43%
  • Men57%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Nicolas Tiva Kummer wrote 287 Medicare Part D claims in 2024

In 2024, Dr. Kummer wrote 287 Medicare Part D claims for 84 patients. 95% of them were for generic drugs. CMS names the drug for 187 of them, across 8 drugs with 11 or more claims each, at $2,627 in total drug cost. In 2023, CMS named 137 claims across 5 drugs.

Part D claims, 2024287
Drugs named by CMS8
Total drug cost$2,627
Part D patients84

Dr. Kummer's Part D claims by kind of drug, 2024

  • Generic272 claims95%
  • Brand-name15 claims5%

Dr. Kummer's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Kummer's Part D claims, 2024

  • Opioids10%30 of 287 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1372024: 18736%

Drugs named by CMS: 8 in 2024, 5 in 2023.

See all prescribing by Dr. Kummer

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Nicolas Tiva Kummer offers telehealth to Medicare patients

Dr. Kummer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Kummer as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

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Dr. Nicolas Tiva Kummer has 4 publications on record

Dmand AI links 4 papers to Dr. Kummer, published from 2010 to 2018. The most frequent topics are Cell Line, Tumor. Dr. Kummer's most frequent co-authors are Theodore Scott Nowicki, MD, PhD, Susan A. McCloskey, MD and Augustine Louis Moscatello, MD.

Papers4
Years published2010 to 2018

Dr. Kummer's papers by year, 2010 to 2018

Topics Dr. Kummer writes about most

  • Cell Line, Tumor

Dr. Kummer's most frequent co-authors

Recent publications by Dr. Kummer

See all 4 publications and co-authors

See who Dr. Kummer researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kummer works with, so you can find a warm path to the right radiation oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Nicolas Tiva Kummer received $325 in industry payments from 2017 to 2023

CMS Open Payments shows 9 general payments to Dr. Kummer from 4 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Novocure Inc. paid the most, $167.

General payments to Dr. Kummer by program year, 2017 to 2023

Companies that paid Dr. Kummer the most, 2017 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Kummer

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Nicolas Tiva Kummer graduated from New York Medical College

Dr. Kummer graduated from New York Medical College in 2011.

  1. Medical schoolNew York Medical College

Source: Dmand AI Professional Profile Data

Sources for Dr. Nicolas Tiva Kummer's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Nicolas Tiva Kummer

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Nicolas Tiva Kummer's NPI number?

Dr. Nicolas Tiva Kummer's NPI number is 1033403852. It was assigned on June 9, 2011, and it is active in the NPI Registry.

What kind of doctor is Dr. Nicolas Tiva Kummer?

Dr. Nicolas Tiva Kummer is a radiation oncologist in Wenatchee, Washington. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Dr. Nicolas Tiva Kummer practice?

Dr. Kummer practices at 1201 N Miller St, Wenatchee, WA 98801. Dr. Kummer's primary practice is Confluence Health in Wenatchee, Washington. Dmand AI also links Dr. Kummer to 1 hospital and 1 medical group.

What is Dr. Nicolas Tiva Kummer's office phone number?

The practice phone on file for Dr. Kummer is (509) 662-1511.

What is Dr. Nicolas Tiva Kummer's medical license number?

Dr. Kummer holds Washington license MD60662907.

Which hospitals is Dr. Nicolas Tiva Kummer affiliated with?

Dr. Kummer is affiliated with Confluence Health Hospital | Central Campus. Dmand AI links Dr. Kummer to 1 more hospital.

What medical group is Dr. Nicolas Tiva Kummer part of?

Dr. Kummer is linked to Confluence Health. Dmand AI links Dr. Kummer to 1 more medical group.

Does Dr. Nicolas Tiva Kummer accept Medicare?

Yes. CMS data shows Dr. Kummer billed Medicare for 4,218 services in 2024, and Dr. Kummer accepts Medicare assignment.

Does Dr. Nicolas Tiva Kummer offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Kummer as offering telehealth services.

How many Medicare patients does Dr. Nicolas Tiva Kummer see?

CMS counts 343 Medicare patients who saw Dr. Kummer in 2024, with an average age of 76.

Show 7 more questionsShow fewer questions

What services does Dr. Nicolas Tiva Kummer bill to Medicare?

In 2024, Dr. Kummer's most billed Medicare services were radiation oncology (77014), medicare service (G6015) and radiation oncology (77300).

Where did Dr. Nicolas Tiva Kummer go to medical school?

Dr. Kummer graduated from New York Medical College in 2011.

What drugs does Dr. Nicolas Tiva Kummer prescribe most?

In 2024 Medicare Part D data, Dr. Kummer's most prescribed drugs by claims were Tamsulosin HCl, Oxybutynin Chloride ER and Pentoxifylline.

Has Dr. Nicolas Tiva Kummer received payments from drug or device companies?

CMS Open Payments shows $325 in general payments to Dr. Kummer from 4 companies from 2017 to 2023. The largest total came from Novocure Inc.

How long has Dr. Nicolas Tiva Kummer been practicing?

Dr. Kummer graduated from medical school in 2011, 15 years ago.

Does Dr. Nicolas Tiva Kummer do research?

Dmand AI links 4 publications to Dr. Kummer, published from 2010 to 2018.

Who does Dr. Nicolas Tiva Kummer publish with?

Dr. Kummer's most frequent co-authors are Theodore Scott Nowicki, MD, PhD (2 shared papers), Susan A. McCloskey, MD (1 shared paper) and Augustine Louis Moscatello, MD (1 shared paper).

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