NPI registry status
Active
2026 NPPES data Pharmacist NPI 1912483918 PHARMD
Verify on CMS → Heather O'Brien, PHARMD
Pharmacist in Neenah, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 294,436 in Pharmacist, 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
239
Medicare Part D claims · 51 beneficiaries · Pharmacist avg: 127
What the federal data shows
Heather O'Brien, PHARMD filed 239 Medicare Part D claims in 2024 as a Pharmacist in Neenah, Wisconsin.
- 239
- Part D claims, 2024
- ≥48th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Heather O'Brien, PHARMD
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1912483918), first enumerated 07/13/2018.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 239 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare O'Brien with other Pharmacist providers
Same primary specialty, same federal CMS NPPES roster.
All 38 Pharmacist providers in Neenah, WI →
Also enrolled in Wisconsin
- Shameem Aadam, RPH Milwaukee, WI
- Shervin Abbasi Milwaukee, WI
- Dr. Salma Abdelaal, RPH., PHD. Madison, WI
- Omnya Abdelrahman West Allis, WI
- Jenny Aberger, RPH La Crosse, WI
- Dr. Dillon Abhold, PHARMD Plymouth, WI
Other specialties in Neenah: Physical Therapist (80) · Nurse Practitioner (51) · Family Nurse Practitioner (44) · Diagnostic Radiology Physician (32)
CMS NPPES provider registry desk
NPI 1912483918 · Pharmacist
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1912483918
- ENUM-RECENT 2018
- TAX-MEGA 294K Pharmacist
- RX-LIGHT 239
- BOOK-MID 5,403 in Wisconsin
- PHOTO-ENUM Rachael Collins, PHA… · 2018
Heather O'Brien, PHARMD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
239 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Heather O'Brien, PHARMD?
Quality data not reportedPrimary specialty
Pharmacist
Medicare Part D claims
239 88% vs specialty avg
Specialty distribution in Wisconsin
How Pharmacist compares to other specialties among Wisconsin 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 Pharmacist. 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).
Practice Address
Provider Details
| NPI | 1912483918 |
|---|---|
| Specialty | Pharmacist |
| Credentials | PHARMD |
| Gender | Female |
| NPI Issued | 07/13/2018 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
239
Total Claims
$96K
Total Drug Cost
51
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 557.467
- Total Day Supply
- 16,524
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 68.2 years
- Avg HCC Risk Score
- 2.24
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 13, 65-74: 24, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Heather O'Brien, PHARMD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Warfarin Sodium
Warfarin Sodium
32 claims
- Atorvastatin Calcium
Atorvastatin Calcium
23 claims
- Trulicity
Trulicity
14 claims
- Jardiance 12
Jardiance
12 claims
- Xarelto 12
Xarelto
12 claims
- Metformin Hcl Er 11
Metformin Hcl Er
11 claims
| Drug | Claims |
|---|---|
| Warfarin Sodium | 32 |
| Atorvastatin Calcium | 23 |
| Trulicity Dulaglutide | 14 |
| Jardiance Empagliflozin | 12 |
| Xarelto Rivaroxaban | 12 |
| Metformin Hcl Er Metformin Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pharmacist Overview
How Heather O'Brien, PHARMD fits within the Pharmacist landscape nationally.
294,436
Pharmacist Providers in US
56
States with Pharmacist
127
Avg Claims per Provider
Heather O'Brien, PHARMD's 239 claims are above the specialty average of 127.
Nationwide Pharmacist peers with similar MIPS or enrollment year
Two federal-record peer sets for O'Brien, both outside Wisconsin so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pharmacist Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as O'Brien.
One of 5,403 Pharmacist providers enrolled in Wisconsin, 11 are shown on this page.
Ahmed Abou Mohamed
RPH
Milwaukee, WI
Rasha Abou-Romia
West Allis, WI
Aya Aboualaywi
Madison, WI
Marwa Aboulsaoud
RPH
Brookfield, WI
Dr. Beimnet Abraha
PHARMD
Wauwatosa, WI
Compare Pharmacist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Heather O'Brien, PHARMD's specialty? ▼
Heather O'Brien, PHARMD specializes in Pharmacist and practices in Neenah, Wisconsin. Credentials: PHARMD.
How much does Heather O'Brien, PHARMD prescribe under Medicare Part D? ▼
In 2024, Heather O'Brien, PHARMD wrote 239 Medicare Part D claims totaling $96K in drug costs for 51 beneficiaries.
Where is Heather O'Brien, PHARMD located? ▼
Heather O'Brien, PHARMD is located at 130 2ND ST, Neenah, WI, 54956. Phone: (920) 454-5202.
What is Heather O'Brien, PHARMD's NPI number? ▼
Heather O'Brien, PHARMD's National Provider Identifier (NPI) is 1912483918, issued on 07/13/2018.
How many Pharmacist providers are there in the US? ▼
There are 294,436 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 127 Medicare Part D claims per year.
What drugs does Heather O'Brien, PHARMD prescribe most often? ▼
Based on 2024 Medicare Part D data, Heather O'Brien, PHARMD's most frequently prescribed drugs include Warfarin Sodium, Atorvastatin Calcium, Trulicity. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Heather O'Brien, PHARMD accept Medicare? ▼
Heather O'Brien, PHARMD appears in CMS Medicare data with 239 Part D claims and 51 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Heather O'Brien, PHARMD's credentials? ▼
Heather O'Brien, PHARMD's NPI is 1912483918 with credentials PHARMD. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.