2026 NPPES data Midwife NPI 1982840617 ARNP/CNM
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MALGORZATA DE RIERA, ARNP/CNM

Midwife in WOODLAND HILLS, California. 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
38
Medicare Part D claims · 19 beneficiaries · Midwife avg: 118
What the federal data reveals: MALGORZATA DE RIERA, ARNP/CNM is a Midwife ([object Object]) practicing in WOODLAND HILLS, California with a Medicare Part D prescribing footprint of 38 claims across 19 beneficiaries .

What stands out: MALGORZATA DE RIERA, ARNP/CNM filed 38 Medicare Part D claims in 2023 across WOODLAND HILLS, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

MALGORZATA DE RIERA, ARNP/CNM at a glance

Quality data not reported

NPI registry status

Active

Issued 12/30/2008

NPI 1982840617

Primary specialty

Midwife

Mid-sized

5,918 US NPIs in this specialty

Medicare Part D claims

38 68% vs specialty avg

2023 prescription claims

Specialty avg: 118

Specialty distribution in California

How Midwife compares to other specialties among California providers

California providers

Midwife share within California

1. Midwife42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Midwife share within California

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Midwife) — 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).

MALGORZATA DE RIERA, ARNP/CNM is a Midwife provider practicing in WOODLAND HILLS, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: ARNP/CNM. NPI: 1982840617. 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.

MALGORZATA DE RIERA, ARNP/CNM appears in the CMS NPPES registry as a Midwife provider holding ARNP/CNM credentials at 5601 DE SOTO AVE, WOODLAND HILLS, CA, 91367, with a listed phone of (954) 554-4575. NPI 1982840617 was issued on 12/30/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DE RIERA 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 38 prescription claims written by this provider, covering 19 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.

Midwife is a mid-sized specialty nationwide, with 5,918 enrolled providers across 54 states and an average of 118 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

5601 DE SOTO AVE
WOODLAND HILLS, CA 91367

Provider Details

NPI 1982840617
Specialty Midwife
Credentials ARNP/CNM
Gender Female
NPI Issued 12/30/2008

License & disciplinary context — California MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to MALGORZATA DE RIERA, ARNP/CNM. To verify MALGORZATA DE RIERA, ARNP/CNM's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California 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.

38
Total Claims
$3K
Total Drug Cost
19
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
99
Total Day Supply
2,804
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
69.0 years
Avg HCC Risk Score
0.79
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Estradiol
19

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

Midwife Overview

How MALGORZATA DE RIERA, ARNP/CNM fits within the Midwife landscape nationally.

5,918
Midwife Providers in US
54
States with Midwife
118
Avg Claims per Provider

MALGORZATA DE RIERA, ARNP/CNM's 38 claims are below the specialty average of 118.

Nearby Midwife Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as DE RIERA.

Compare Midwife nationally: see state-by-state distribution →

Frequently Asked Questions

What is MALGORZATA DE RIERA, ARNP/CNM's specialty?
MALGORZATA DE RIERA, ARNP/CNM specializes in Midwife and practices in WOODLAND HILLS, California. Credentials: ARNP/CNM.
How much does MALGORZATA DE RIERA, ARNP/CNM prescribe under Medicare Part D?
In 2023, MALGORZATA DE RIERA, ARNP/CNM wrote 38 Medicare Part D claims totaling $3K in drug costs for 19 beneficiaries.
Where is MALGORZATA DE RIERA, ARNP/CNM located?
MALGORZATA DE RIERA, ARNP/CNM is located at 5601 DE SOTO AVE, WOODLAND HILLS, CA, 91367. Phone: (954) 554-4575.
What is MALGORZATA DE RIERA, ARNP/CNM's NPI number?
MALGORZATA DE RIERA, ARNP/CNM's National Provider Identifier (NPI) is 1982840617, issued on 12/30/2008.
How many Midwife providers are there in the US?
There are 5,918 Midwife providers across 54 states in the US. The average Midwife provider writes 118 Medicare Part D claims per year.
What drugs does MALGORZATA DE RIERA, ARNP/CNM prescribe most often?
Based on 2023 Medicare Part D data, MALGORZATA DE RIERA, ARNP/CNM's most frequently prescribed drugs include Estradiol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MALGORZATA DE RIERA, ARNP/CNM accept Medicare?
MALGORZATA DE RIERA, ARNP/CNM appears in CMS Medicare data with 38 Part D claims and 19 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MALGORZATA DE RIERA, ARNP/CNM's credentials?
MALGORZATA DE RIERA, ARNP/CNM's NPI is 1982840617 with credentials ARNP/CNM. 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