2026 NPPES data Nurse Practitioner NPI 1235914508 DNP, ARNP, FNP-C
Verify on CMS →

ISABELA AHUMADA, DNP, ARNP, FNP-C

Nurse Practitioner in SEATTLE, Washington. 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
27
Medicare Part D claims · 12 beneficiaries · Nurse Practitioner avg: 1K
What the federal data reveals: ISABELA AHUMADA, DNP, ARNP, FNP-C is a Nurse Practitioner ([object Object]) practicing in SEATTLE, Washington with a Medicare Part D prescribing footprint of 27 claims across 12 beneficiaries .

What stands out: ISABELA AHUMADA, DNP, ARNP, FNP-C filed 27 Medicare Part D claims in 2023 across SEATTLE, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ISABELA AHUMADA, DNP, ARNP, FNP-C at a glance

Quality data not reported

NPI registry status

Active

Issued 08/25/2023

NPI 1235914508

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

27 98% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Washington

How Nurse Practitioner compares to other specialties among Washington providers

Washington providers

Nurse Practitioner share within Washington

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate

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).

ISABELA AHUMADA, DNP, ARNP, FNP-C is a Nurse Practitioner provider practicing in SEATTLE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DNP, ARNP, FNP-C. NPI: 1235914508. 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.

ISABELA AHUMADA, DNP, ARNP, FNP-C appears in the CMS NPPES registry as a Nurse Practitioner provider holding DNP, ARNP, FNP-C credentials at 4915 25TH AVE NE STE 300W, SEATTLE, WA, 98105, with a listed phone of (206) 525-7777. NPI 1235914508 was issued on 08/25/2023. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AHUMADA 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 27 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $3K in drug spend. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

4915 25TH AVE NE STE 300W
SEATTLE, WA 98105

Provider Details

NPI 1235914508
Specialty Nurse Practitioner
Credentials DNP, ARNP, FNP-C
Gender Female
NPI Issued 08/25/2023

Hospital and facility affiliations

Facilities where ISABELA AHUMADA, DNP, ARNP, FNP-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

THE ASSOCIATION OF UNIVERSITY PHYSICIANS
SEATTLE, WA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — Washington WMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~34K Washington medical licensees in 2023 — they are NOT specific to ISABELA AHUMADA, DNP, ARNP, FNP-C. To verify ISABELA AHUMADA, DNP, ARNP, FNP-C's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

27
Total Claims
$3K
Total Drug Cost
12
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
41
Total Day Supply
1,136
Generic Drug Cost
$233

Patient Demographics

Average Patient Age
65.8 years
Avg HCC Risk Score
1.40

Nurse Practitioner Overview

How ISABELA AHUMADA, DNP, ARNP, FNP-C fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

ISABELA AHUMADA, DNP, ARNP, FNP-C's 27 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Washington

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

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is ISABELA AHUMADA, DNP, ARNP, FNP-C's specialty?
ISABELA AHUMADA, DNP, ARNP, FNP-C specializes in Nurse Practitioner and practices in SEATTLE, Washington. Credentials: DNP, ARNP, FNP-C.
How much does ISABELA AHUMADA, DNP, ARNP, FNP-C prescribe under Medicare Part D?
In 2023, ISABELA AHUMADA, DNP, ARNP, FNP-C wrote 27 Medicare Part D claims totaling $3K in drug costs for 12 beneficiaries.
Where is ISABELA AHUMADA, DNP, ARNP, FNP-C located?
ISABELA AHUMADA, DNP, ARNP, FNP-C is located at 4915 25TH AVE NE STE 300W, SEATTLE, WA, 98105. Phone: (206) 525-7777.
What is ISABELA AHUMADA, DNP, ARNP, FNP-C's NPI number?
ISABELA AHUMADA, DNP, ARNP, FNP-C's National Provider Identifier (NPI) is 1235914508, issued on 08/25/2023.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
Does ISABELA AHUMADA, DNP, ARNP, FNP-C accept Medicare?
ISABELA AHUMADA, DNP, ARNP, FNP-C appears in CMS Medicare data with 27 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ISABELA AHUMADA, DNP, ARNP, FNP-C's credentials?
ISABELA AHUMADA, DNP, ARNP, FNP-C's NPI is 1235914508 with credentials DNP, ARNP, FNP-C. 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.
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