NPPES file of Aug 9, 2026

Cassandra Dunlavy, ARNP

Family Nurse Practitioner · Ottumwa, IA

Cassandra Dunlavy, ARNP is a family nurse practitioner with a practice address in Ottumwa, Iowa, and NPI 1437692803, issued on Dec 2, 2016. Check the license (Iowa A126870, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1437692803
Name
Cassandra Dunlavy
Credential
ARNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
A126870 IA
Self-reported in NPPES; status is on the state search
Practice location
201 S Market St, Ottumwa, IA 52501
Phone
(641) 684-6896
Enumerated
Dec 2, 2016
Record last updated
Dec 2, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(641) 226-5759
Medicaid ID
1912952367 IA
Medicare enrollment
Enrolled (PECOS I20210105001880); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 1,971 in Iowa → Look up another NPI →

Also registered at 201 S Market St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Rebecca Bowman, DNP, APRN-C, PMHNPPsychiatric/Mental Health Nurse Practitioner1275763047
  2. James Church, MDFamily Medicine Physician1427114354
  3. Alyssa Darling, DMDDentist1710338314
  4. Richard Davenport, LMHC, LMSWMental Health Counselor1205276821
  5. Joseph Dougherty, DDSGeneral Practice Dentistry1649525981
  6. Erika EllisSocial Worker1619533965

Verify Cassandra Dunlavy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license A126870    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Iowa license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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3.1 times the Medicare Part D claims of the average family nurse practitioner in 2024

3,984 Medicare Part D claims for 206 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 54 claims were for opioids.

  1. Cassandra Dunlavy3,984
  2. Specialty average1,305

Most prescribed

  1. Atorvastatin Calcium287 claims
  2. Lisinopril186 claims
  3. Amlodipine Besylate156 claims
  4. Levothyroxine Sodium140 claims
  5. Omeprazole140 claims
  6. Albuterol Sulfate Hfa126 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $346.66

7 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Cassandra Dunlavy$346.66
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. River Hills Community Health Center IncOttumwa, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Cassandra Dunlavy among 1,971 family nurse practitioner records in Iowa

Cassandra Dunlavy, ARNP is one of 1,971 family nurse practitioner records with a practice address in Iowa. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 36% of them.

  • NPI issued2016 · 36% of these records are older, 58% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2016 · median 2018 among the 1,398 with a school on file
  • Record last updated2016 · 43% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

40 family nurse practitioner records list a practice address in Ottumwa

They are 40 of the 405 NPPES records with a practice address in Ottumwa, and 1,971 family nurse practitioner records in Iowa.

All 1,971 in Iowa → Every provider in Ottumwa → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Kimberly Brown, ARNPOttumwa, IA 525011013286020
  2. David Burrows, ARNPOttumwa, IA 525011407156458
  3. Dee Dorsett, ARNP, NP-COttumwa, IA 525011013344092
  4. Shelly Edwards, ARNPOttumwa, IA 525011245671122
  5. Mary Henderson, NP-COttumwa, IA 525011891079257
  6. Molly Layton, ARNPOttumwa, IA 525011760815070
  7. Juanita O'Brien, ARNPOttumwa, IA 525011215080759
  8. Susan Reynolds, ARNPOttumwa, IA 525011801889498

Common questions

What is Cassandra Dunlavy, ARNP's NPI number?

Cassandra Dunlavy, ARNP's National Provider Identifier (NPI) is 1437692803, issued on Dec 2, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Cassandra Dunlavy, ARNP located?

The NPPES record lists a practice address at 201 S Market St, Ottumwa, IA, 52501. Phone: (641) 684-6896. Providers update this record themselves, so call before visiting.

How can I verify Cassandra Dunlavy, ARNP's license?

NPPES lists Iowa license number A126870, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

How much does Cassandra Dunlavy, ARNP prescribe under Medicare Part D?

In 2024, Cassandra Dunlavy, ARNP had 3,984 Medicare Part D claims for 206 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.