Dr. Mary Ann K. Arndt, MD

  • Spokane, WA
  • Nephrologist
NPI1750458329PAC ID0446313464
Medicare services, 2024
723
Medicare patients, 2024
149
Part D claims, 2016
139
Hospital affiliations
2
Industry payments
$55
Practice address
101 W 8th Ave, Spokane, WA 99204
Practice phone
Call (509) 474-7370
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Incyte Pathology - Sacred Heart Medical Center Branch

Clinical Lab - Full Service · Spokane, Washington

See all 5 affiliations

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Dr. Mary Ann K. Arndt is a nephrologist in Spokane, Washington

Dr. Arndt practices at Incyte Pathology - Sacred Heart Medical Center Branch in Spokane, Washington.

Dr. Arndt's NPI, 1750458329, was assigned on November 29, 2006. Dr. Arndt graduated from Georgetown University School of Medicine in 2002. Dr. Arndt holds Washington license MD30286879.

NPI and contact details
Medicare PAC ID
0446313464
NPI enumeration date
November 29, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(509) 474-7370
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
50
Medical school graduation
2002

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

Dr. Mary Ann K. Arndt practices at Incyte Pathology - Sacred Heart Medical Center Branch in Spokane, Washington

Dr. Arndt's primary practice is Incyte Pathology - Sacred Heart Medical Center Branch, at 101 W 8th Ave, Spokane, WA 99204. The practice phone is (509) 474-7370.

  • Incyte Pathology - Sacred Heart Medical Center Branch
    101 W 8th Ave, Spokane, WA 99204Phone(509) 474-7370

Source: Dmand AI Affiliation Data

Dr. Mary Ann K. Arndt is affiliated with 4 sites of care and 1 medical group

Dr. Arndt's primary practice is Incyte Pathology - Sacred Heart Medical Center Branch in Spokane, Washington. Dr. Arndt is also affiliated with Prov Sacred Hrt Med Ctr & Childs Hosp. The medical group on file is Providence Medical Group. Dmand AI also links Dr. Arndt to 1 more hospital and 1 group practice or clinic, each named with a free account.

See all 5 affiliations for Dr. Arndt

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Mary Ann K. Arndt's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Arndt practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Incyte Pathology - Sacred Heart Medical Center BranchAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Mary Ann K. Arndt is one of 225 nephrologists in Washington

Nephrology is Dr. Arndt's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dmand AI has Dr. Arndt's licenses on file in 2 states: Washington and Oregon.

Specialties and state licenses

  • Nephrology, WashingtonPrimaryLicense MD30286879 · taxonomy 207RN0300X
  • Oregon licenseLicense MD157887

Nephrologists near Dr. Arndt

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

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

Dr. Mary Ann K. Arndt billed Medicare for 723 services in 2024

CMS data shows 723 Medicare services from Dr. Arndt across 6 procedure codes in 2024, for 149 Medicare patients. Medicare paid $47,743 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024723
Medicare patients149
Paid by Medicare$47,743
Procedure codes6

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

  • 2023
  • 2024
Office and hospital visits
2023: 4232024: 57235%
Tests and treatments
2023: 1092024: 15139%

Dr. Arndt compared with the Washington median for nephrologists, 2024

  • Dr. Arndt
  • Washington median
Medicare services
723vs 703Close to median
Medicare patients
149vs 21029% below
Part D claims
139vs 67679% below

Medians across 217 nephrologists in Washington with Dmand AI profiles that report each measure.

Dr. Arndt'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.

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

Dr. Mary Ann K. Arndt treated 149 Medicare patients in 2024, average age 70

CMS counts 149 Medicare patients who saw Dr. Arndt in 2024. The largest group is 75 to 84, with 50 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 33% are also on Medicaid. Their average risk score is 6.08, 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. Arndt's median patient age at 70, with 46% women.

Medicare patients, 2024149
Average age70
Average risk score6.08
Also on Medicaid33%

Dr. Arndt's Medicare patients by age, 2024

Dr. Arndt's Medicare patients by sex, 2024

  • Women6946%
  • Men8054%

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

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Heart failure65%
  5. Diabetes55%
  6. Ischemic heart disease52%
  7. Arthritis51%
  8. Atrial fibrillation46%

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

Dr. Arndt's patients across all payers

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

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women46%
  • Men53%

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

Dr. Mary Ann K. Arndt wrote 139 Medicare Part D claims in 2016

In 2016, Dr. Arndt wrote 139 Medicare Part D claims. They cover 7 drugs, with $74,287 in total drug cost.

Part D claims, 2016139
Drugs named by CMS7
Total drug cost$74,287

Dr. Arndt's most prescribed drugs by claims, 2016

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

See all prescribing by Dr. Arndt

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

How Dr. Mary Ann K. Arndt takes part in Medicare

Dr. Arndt accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Mary Ann K. Arndt received $55 in industry payments from 2021 to 2023

CMS Open Payments shows 4 general payments to Dr. Arndt from 2 drug and device companies from 2021 to 2023. Food and beverage make up the largest share, 93% of the total. GlaxoSmithKline, LLC. paid the most, $51.

General payments to Dr. Arndt by program year, 2021 to 2023

General payments to Dr. Arndt by kind, 2021 to 2023

$55in total
  • Food and beverage$5193%
  • Education$47%

Companies that paid Dr. Arndt the most, 2021 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Arndt

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

Dr. Mary Ann K. Arndt graduated from Georgetown University School of Medicine

Dr. Arndt graduated from Georgetown University School of Medicine in 2002.

  1. Medical schoolGeorgetown University School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Mary Ann K. Arndt'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand 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)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
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. Mary Ann K. Arndt

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. Mary Ann K. Arndt's NPI number?

Dr. Mary Ann K. Arndt's NPI number is 1750458329. It was assigned on November 29, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Mary Ann K. Arndt?

Dr. Mary Ann K. Arndt is a nephrologist in Spokane, Washington. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).

Where does Dr. Mary Ann K. Arndt practice?

Dr. Arndt practices at 101 W 8th Ave, Spokane, WA 99204. Dr. Arndt's primary practice is Incyte Pathology - Sacred Heart Medical Center Branch in Spokane, Washington. Dmand AI also links Dr. Arndt to 1 hospital and 1 group practice or clinic.

What is Dr. Mary Ann K. Arndt's office phone number?

The practice phone on file for Dr. Arndt is (509) 474-7370.

What is Dr. Mary Ann K. Arndt's medical license number?

Dr. Arndt holds Washington license MD30286879, one of the licenses on file in 2 states.

Which states has Dr. Mary Ann K. Arndt been licensed in?

Dmand AI has state licenses on file for Dr. Arndt in Washington and Oregon.

Which hospitals is Dr. Mary Ann K. Arndt affiliated with?

Dr. Arndt is affiliated with Prov Sacred Hrt Med Ctr & Childs Hosp. Dmand AI links Dr. Arndt to 1 more hospital.

What medical group is Dr. Mary Ann K. Arndt part of?

Dr. Arndt is linked to Providence Medical Group.

Does Dr. Mary Ann K. Arndt accept Medicare?

Yes. CMS data shows Dr. Arndt billed Medicare for 723 services in 2024, and Dr. Arndt accepts Medicare assignment.

How many Medicare patients does Dr. Mary Ann K. Arndt see?

CMS counts 149 Medicare patients who saw Dr. Arndt in 2024, with an average age of 70.

Show 5 more questionsShow fewer questions

What services does Dr. Mary Ann K. Arndt bill to Medicare?

In 2024, Dr. Arndt's most billed Medicare services were hospital inpatient care (99232), dialysis (90935) and hospital inpatient care (99233).

Where did Dr. Mary Ann K. Arndt go to medical school?

Dr. Arndt graduated from Georgetown University School of Medicine in 2002.

What drugs does Dr. Mary Ann K. Arndt prescribe most?

In 2016 Medicare Part D data, Dr. Arndt's most prescribed drugs by claims were Lisinopril, Sensipar and Calcitriol.

Has Dr. Mary Ann K. Arndt received payments from drug or device companies?

CMS Open Payments shows $55 in general payments to Dr. Arndt from 2 companies from 2021 to 2023. The largest total came from GlaxoSmithKline, LLC.

How long has Dr. Mary Ann K. Arndt been practicing?

Dr. Arndt graduated from medical school in 2002, 24 years ago.

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