NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1194795351 A.R.N.P.
Verify on CMS → Barbara Woo, A.R.N.P.
Nurse Practitioner in Billings, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 87,700 in Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
305
Medicare Part D claims · 31 beneficiaries · Nurse Practitioner avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Barbara Woo, A.R.N.P. filed 305 Medicare Part D claims in 2023 as a Nurse Practitioner in Billings, Montana.
- 305
- Part D claims, 2023
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Barbara Woo, A.R.N.P.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
305 Top 43% higher than 57% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Barbara Woo, A.R.N.P.?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
305 72% vs specialty avg
Specialty distribution in Montana
How Nurse Practitioner compares to other specialties among Montana providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Nurse Practitioner. Verify directly:
How MIPS and board certification work
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).
Barbara Woo, A.R.N.P. appears in the CMS NPPES registry as a Nurse Practitioner provider holding A.R.N.P. credentials at 27 N 27TH ST UNIT 21-C, Billings, MT, 59101, with a listed phone of (406) 200-8471. NPI 1194795351 was issued on 01/23/2006.
Medicare Part D records for calendar year 2023 show 305 prescription claims written by this provider, covering 31 Medicare beneficiaries and totaling roughly $10K in drug spend.
Nurse Practitioner is a high-volume specialty nationwide, with 87,700 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
Provider Details
| NPI | 1194795351 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | A.R.N.P. |
| Gender | Female |
| NPI Issued | 01/23/2006 |
Hospital and facility affiliations
Facilities where Barbara Woo, A.R.N.P. 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.
Frontier Psychiatry PLLC
Magnolia, TX
Whole Health Professional LLC
Houston, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
305
Total Claims
$10K
Total Drug Cost
31
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 352
- Total Day Supply
- 9,777
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 62.5 years
- Avg HCC Risk Score
- 1.46
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 14, 65-74: N/A, 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.
What Barbara Woo, A.R.N.P. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Mirtazapine
Mirtazapine
33 claims
- Trazodone Hcl
Trazodone Hcl
28 claims
- Buspirone Hcl
Buspirone Hcl
22 claims
- Clonazepam
Clonazepam
21 claims
- Olanzapine
Olanzapine
18 claims
- Bupropion Hcl
Bupropion Hcl
14 claims
- Lamotrigine
Lamotrigine
14 claims
- Dextroamphetamine-… 13
Dextroamphetamine-Amphetamine
13 claims
| Drug | Claims |
|---|---|
| Mirtazapine | 33 |
| Trazodone Hcl | 28 |
| Buspirone Hcl | 22 |
| Clonazepam | 21 |
| Olanzapine | 18 |
| Bupropion Hcl | 14 |
| Lamotrigine | 14 |
| Dextroamphetamine-Amphetamine Dextroamphetamine/Amphetamine | 13 |
| Temazepam | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Barbara Woo, A.R.N.P. fits within the Nurse Practitioner landscape nationally.
87,700
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider
Barbara Woo, A.R.N.P.'s 305 claims are below the specialty average of 1,084.
Nearby Nurse Practitioner Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Woo.
Dr. Melissa Abraham
NP-C
Helena, MT
Dr. Amanda Abrams-Buerkley
DNP
Billings, MT
Dr. Stephanie Acosta
APRN
Ulm, MT
Dr. Kara Addison
DNP-C
Helena, MT
Dr. Marni Allen
NP
Kalispell, MT
Compare Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Montana
Frequently Asked Questions
What is Barbara Woo, A.R.N.P.'s specialty? ▼
Barbara Woo, A.R.N.P. specializes in Nurse Practitioner and practices in Billings, Montana. Credentials: A.R.N.P..
How much does Barbara Woo, A.R.N.P. prescribe under Medicare Part D? ▼
In 2023, Barbara Woo, A.R.N.P. wrote 305 Medicare Part D claims totaling $10K in drug costs for 31 beneficiaries.
Where is Barbara Woo, A.R.N.P. located? ▼
Barbara Woo, A.R.N.P. is located at 27 N 27TH ST UNIT 21-C, Billings, MT, 59101. Phone: (406) 200-8471.
What is Barbara Woo, A.R.N.P.'s NPI number? ▼
Barbara Woo, A.R.N.P.'s National Provider Identifier (NPI) is 1194795351, issued on 01/23/2006.
How many Nurse Practitioner providers are there in the US? ▼
There are 87,700 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does Barbara Woo, A.R.N.P. prescribe most often? ▼
Based on 2023 Medicare Part D data, Barbara Woo, A.R.N.P.'s most frequently prescribed drugs include Mirtazapine, Trazodone Hcl, Buspirone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Barbara Woo, A.R.N.P. accept Medicare? ▼
Barbara Woo, A.R.N.P. appears in CMS Medicare data with 305 Part D claims and 31 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Barbara Woo, A.R.N.P.'s credentials? ▼
Barbara Woo, A.R.N.P.'s NPI is 1194795351 with credentials A.R.N.P.. 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.