2026 NPPES data General Practice Registered Nurse NPI 1598951501 PMHNP
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CASSANDRA STELL, PMHNP

General Practice Registered Nurse in PORTLAND, Oregon. 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
461
Medicare Part D claims · 48 beneficiaries · General Practice Registered Nurse avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$220.59
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CASSANDRA STELL, PMHNP is a General Practice Registered Nurse ([object Object]) practicing in PORTLAND, Oregon with a Medicare Part D prescribing footprint of 461 claims across 48 beneficiaries — 9% brand-name prescribing . Industry payments of $220.59 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CASSANDRA STELL, PMHNP filed 461 Medicare Part D claims in 2023 across PORTLAND, Oregon. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CASSANDRA STELL, PMHNP at a glance

Quality data not reported

NPI registry status

Active

Issued 09/24/2007

NPI 1598951501

Primary specialty

General Practice Registered Nurse

Mid-sized

5,478 US NPIs in this specialty

Medicare Part D claims

461 61% vs specialty avg

2023 prescription claims

Specialty avg: 1,187

Specialty distribution in Oregon

How General Practice Registered Nurse compares to other specialties among Oregon providers

Oregon providers

General Practice Registered Nurse share within Oregon

1. General Practice Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
General Practice Registered Nurse share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Registered Nurse (ABMS / AOA reference)

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

Est. board-certified rate (General Practice Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (General Practice Registered Nurse) — 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).

CASSANDRA STELL, PMHNP is a General Practice Registered Nurse provider practicing in PORTLAND, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PMHNP. NPI: 1598951501. 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.

CASSANDRA STELL, PMHNP appears in the CMS NPPES registry as a General Practice Registered Nurse provider holding PMHNP credentials at 2250 NW FLANDERS ST STE 105, PORTLAND, OR, 97210, with a listed phone of (503) 444-8440. NPI 1598951501 was issued on 09/24/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what STELL 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 461 prescription claims written by this provider, covering 48 Medicare beneficiaries and totaling roughly $23K in drug spend, split 9% brand-name and 91% generic by claim count. 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.

General Practice Registered Nurse is a mid-sized specialty nationwide, with 5,478 enrolled providers across 55 states and an average of 1,187 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

2250 NW FLANDERS ST STE 105
PORTLAND, OR 97210

Provider Details

NPI 1598951501
Specialty General Practice Registered Nurse
Credentials PMHNP
Gender Female
NPI Issued 09/24/2007

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for CASSANDRA STELL, PMHNP. Source: openpaymentsdata.cms.gov.

Total received

$221

Largest payer

Otsuka America Pharmaceutical, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

CASSANDRA STELL, PMHNP — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 461 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

461
Total Claims
$23K
Total Drug Cost
48
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
554
Total Day Supply
15,309
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$17K
Generic Drug Cost
$6K

Patient Demographics

Average Patient Age
58.5 years
Avg HCC Risk Score
1.71
Gender Split
52% female / 48% male
Age Distribution
<65: 26, 65-74: 20, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
28
Omeprazole
22
Metformin Hcl
21
Lisinopril
19
Amlodipine Besylate
16
Metformin Hcl Er
Metformin Hcl
16
Pantoprazole Sodium
16
Levothyroxine Sodium
15
Gabapentin
14
Famotidine
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

General Practice Registered Nurse Overview

How CASSANDRA STELL, PMHNP fits within the General Practice Registered Nurse landscape nationally.

5,478
General Practice Registered Nurse Providers in US
55
States with General Practice Registered Nurse
1,187
Avg Claims per Provider

CASSANDRA STELL, PMHNP's 461 claims are below the specialty average of 1,187.

Nearby General Practice Registered Nurse Providers in Oregon

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

Compare General Practice Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is CASSANDRA STELL, PMHNP's specialty?
CASSANDRA STELL, PMHNP specializes in General Practice Registered Nurse and practices in PORTLAND, Oregon. Credentials: PMHNP.
How much does CASSANDRA STELL, PMHNP prescribe under Medicare Part D?
In 2023, CASSANDRA STELL, PMHNP wrote 461 Medicare Part D claims totaling $23K in drug costs for 48 beneficiaries.
Where is CASSANDRA STELL, PMHNP located?
CASSANDRA STELL, PMHNP is located at 2250 NW FLANDERS ST STE 105, PORTLAND, OR, 97210. Phone: (503) 444-8440.
What is CASSANDRA STELL, PMHNP's NPI number?
CASSANDRA STELL, PMHNP's National Provider Identifier (NPI) is 1598951501, issued on 09/24/2007.
Does CASSANDRA STELL, PMHNP prescribe more brand-name or generic drugs?
CASSANDRA STELL, PMHNP's prescribing is 9% brand-name and 91% generic drugs by claim count, with $17K in brand drug costs.
How many General Practice Registered Nurse providers are there in the US?
There are 5,478 General Practice Registered Nurse providers across 55 states in the US. The average General Practice Registered Nurse provider writes 1,187 Medicare Part D claims per year.
What drugs does CASSANDRA STELL, PMHNP prescribe most often?
Based on 2023 Medicare Part D data, CASSANDRA STELL, PMHNP's most frequently prescribed drugs include Atorvastatin Calcium, Omeprazole, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CASSANDRA STELL, PMHNP accept Medicare?
CASSANDRA STELL, PMHNP appears in CMS Medicare data with 461 Part D claims and 48 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CASSANDRA STELL, PMHNP's credentials?
CASSANDRA STELL, PMHNP's NPI is 1598951501 with credentials PMHNP. 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