NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1841286739 ANCC
Verify on CMS → Catherine Obin, ANCC
Nurse Practitioner in Wareham, Massachusetts.
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
4K
Medicare Part D claims · 375 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$781.37
8 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Catherine Obin, ANCC filed 3,606 Medicare Part D claims in 2023 as a Nurse Practitioner in Wareham, Massachusetts, prescribing 87% generic.
- 4K
- Part D claims, 2023
- 87%
- generic prescribing
- $781.37
- industry payments (Sunshine Act)
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.
Catherine Obin, ANCC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,606 Top 9% higher than 91% 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 Catherine Obin, ANCC?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
3,606 233% vs specialty avg
Specialty distribution in Massachusetts
How Nurse Practitioner compares to other specialties among Massachusetts 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).
Catherine Obin, ANCC appears in the CMS NPPES registry as a Nurse Practitioner provider holding ANCC credentials at 100 ROSEBROOK WAY, Wareham, MA, 02571, with a listed phone of (508) 273-4950. NPI 1841286739 was issued on 09/26/2005.
Medicare Part D records for calendar year 2023 show 3,606 prescription claims written by this provider, covering 375 Medicare beneficiaries and totaling roughly $300K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.9%.
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 | 1841286739 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | ANCC |
| Gender | Female |
| NPI Issued | 09/26/2005 |
Hospital and facility affiliations
Facilities where Catherine Obin, ANCC 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.
Physiotherapy Associates Inc
East Wareham, MA
Southcoast Physicians Group Inc
Fairhaven, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Catherine Obin, ANCC. Source: openpaymentsdata.cms.gov.
Total received
$781
Largest payer
Phathom Pharmaceuticals, 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.
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Catherine Obin, ANCC. To verify Catherine Obin, ANCC's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Catherine Obin, ANCC - brand share 13.0%
Nurse Practitioner average
13% brand-name claims vs 87% generic, on 3,606 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.
3,606
Total Claims
$300K
Total Drug Cost
375
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,747
- Total Day Supply
- 223,527
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $215K
- Generic Drug Cost
- $84K
- Opioid Claims
- 70 (1.9% rate)
- Antibiotic Claims
- 72
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 1.26
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 52, 65-74: 152, 75-84: 121, 85+: 50
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Catherine Obin, ANCC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Omeprazole
Omeprazole
158 claims
- Atorvastatin Calcium
Atorvastatin Calcium
144 claims
- Amlodipine Besylate
Amlodipine Besylate
132 claims
- Lisinopril
Lisinopril
117 claims
- Metoprolol Succinate
Metoprolol Succinate
116 claims
- Levothyroxine Sodium
Levothyroxine Sodium
100 claims
- Lorazepam
Lorazepam
91 claims
- Metformin Hcl
Metformin Hcl
80 claims
| Drug | Claims |
|---|---|
| Omeprazole | 158 |
| Atorvastatin Calcium | 144 |
| Amlodipine Besylate | 132 |
| Lisinopril | 117 |
| Metoprolol Succinate | 116 |
| Levothyroxine Sodium | 100 |
| Lorazepam | 91 |
| Metformin Hcl | 80 |
| Gabapentin | 78 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 72 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Catherine Obin, ANCC 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
Catherine Obin, ANCC's 3,606 claims are above the specialty average of 1,084.
Nearby Nurse Practitioner Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Obin.
Dr. Carolyn Abbanat Villafane
NP
Boston, MA
Dr. Lisa Abbondanza
CNP
Franklin, MA
Fatima Abdalla
Melrose, MA
Dr. Esayas Abraham
NP
Chelsea, MA
Alissa Abrahamson
Framingham, MA
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 Massachusetts 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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Medical Specialties Explained
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Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
Telehealth Guide
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Frequently Asked Questions
What is Catherine Obin, ANCC's specialty? ▼
Catherine Obin, ANCC specializes in Nurse Practitioner and practices in Wareham, Massachusetts. Credentials: ANCC.
How much does Catherine Obin, ANCC prescribe under Medicare Part D? ▼
In 2023, Catherine Obin, ANCC wrote 3,606 Medicare Part D claims totaling $300K in drug costs for 375 beneficiaries.
Where is Catherine Obin, ANCC located? ▼
Catherine Obin, ANCC is located at 100 ROSEBROOK WAY, Wareham, MA, 02571. Phone: (508) 273-4950.
What is Catherine Obin, ANCC's NPI number? ▼
Catherine Obin, ANCC's National Provider Identifier (NPI) is 1841286739, issued on 09/26/2005.
Does Catherine Obin, ANCC prescribe more brand-name or generic drugs? ▼
Catherine Obin, ANCC's prescribing is 13% brand-name and 87% generic drugs by claim count, with $215K in brand drug costs.
Does Catherine Obin, ANCC prescribe opioids? ▼
Yes, Catherine Obin, ANCC had 70 opioid claims in 2023 with an opioid prescribing rate of 1.9%.
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 Catherine Obin, ANCC prescribe most often? ▼
Based on 2023 Medicare Part D data, Catherine Obin, ANCC's most frequently prescribed drugs include Omeprazole, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Catherine Obin, ANCC accept Medicare? ▼
Catherine Obin, ANCC appears in CMS Medicare data with 3,606 Part D claims and 375 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Obin, ANCC's credentials? ▼
Catherine Obin, ANCC's NPI is 1841286739 with credentials ANCC. 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
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.