Dianna Elizabeth Marrero, FNP-C
Family Nurse Practitioner · Walla Walla, WA
Dianna Elizabeth Marrero, FNP-C is a family nurse practitioner with a practice address in Walla Walla, Washington, and NPI 1790547693, issued on Jan 25, 2024. Check the license (Washington AP61521106, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dianna Elizabeth Marrero
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- AP61521106 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1111 S 2ND Ave, Walla Walla, WA 99362
- Phone
- (509) 897-3700
- Enumerated
- Jan 25, 2024
- Record last updated
- Dec 9, 2024
- Fax
- (509) 897-8589
- Medicare enrollment
- Enrolled (PECOS I20240429000775); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,781 in Washington → Look up another NPI →
Also registered at 1111 S 2ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Betz, MDObstetrics & Gynecology Physician1164408951
- Carmelle Boyd, MSWClinical Social Worker1598032740
- Mary Buriani, ARNPFamily Nurse Practitioner1114378684
- Jennifer Christenson, ARNPFamily Nurse Practitioner1457336158
Verify Dianna Elizabeth Marrero in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP61521106Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average family nurse practitioner in 2024
386 Medicare Part D claims for 157 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 86 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen30 claims
- Oxycodone Hcl21 claims
- Albuterol Sulfate Hfa15 claims
- Ventolin Hfa14 claims
- Levothyroxine Sodium13 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: $124.98
1 payment: 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.
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
- Providence Health And Services - WashingtonWalla Wall, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dianna Elizabeth Marrero among 3,781 family nurse practitioner records in Washington
Dianna Elizabeth Marrero, FNP-C is one of 3,781 family nurse practitioner records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 90% of them.
- NPI issued2024 · 90% of these records are older, 5% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2023 · median 2018 among the 2,116 with a school on file
- Record last updated2024 · 46% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 family nurse practitioner records list a practice address in Walla Walla
They are 30 of the 1,276 NPPES records with a practice address in Walla Walla, and 3,781 family nurse practitioner records in Washington.
All 3,781 in Washington → Every provider in Walla Walla → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Eileen Bow, ARNP-FPWalla Walla, WA 993621962487132
- Jennifer Christenson, ARNPWalla Walla, WA 993621457336158
- Ellen Collette, A.R.N.P.Walla Walla, WA 993621760685424
- Elizabeth Eaton-Gamsby, R.N., F.N.P.Walla Walla, WA 993621720114366
- Susan Friesen, FNP, ARNPWalla Walla, WA 993621225208333
- Michael Frizelle, FNPWalla Walla, WA 993621699931493
- Paul Holce, ARNP-CWalla Walla, WA 993621225049992
- Laura Hollister-Meadows, FNP-BCWalla Walla, WA 993621477534972
Common questions
What is Dianna Elizabeth Marrero, FNP-C's NPI number?
Dianna Elizabeth Marrero, FNP-C's National Provider Identifier (NPI) is 1790547693, issued on Jan 25, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Dianna Elizabeth Marrero, FNP-C located?
The NPPES record lists a practice address at 1111 S 2ND Ave, Walla Walla, WA, 99362. Phone: (509) 897-3700. Providers update this record themselves, so call before visiting.
How can I verify Dianna Elizabeth Marrero, FNP-C's license?
NPPES lists Washington license number AP61521106, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Dianna Elizabeth Marrero, FNP-C prescribe under Medicare Part D?
In 2024, Dianna Elizabeth Marrero, FNP-C had 386 Medicare Part D claims for 157 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.
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.