NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1346382918 DO
Verify on CMS → Carrie Merrill, DO
Obstetrics & Gynecology Physician in Casper, Wyoming.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology Physician, 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
72
Medicare Part D claims · 17 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
63%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$705.59
6 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Carrie Merrill, DO filed 72 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in Casper, Wyoming, prescribing 63% generic.
- 72
- Part D claims, 2023
- 63%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Carrie Merrill, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
72 0th percentile higher than 0% 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
✓
Board certification likely (heuristic, not verified)
Carrie Merrill, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Carrie Merrill, DO?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
72 60% vs specialty avg
Specialty distribution in Wyoming
How Obstetrics & Gynecology Physician compares to other specialties among Wyoming 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 Obstetrics & Gynecology Physician. 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).
Carrie Merrill, DO appears in the CMS NPPES registry as an Obstetrics & Gynecology Physician provider holding DO credentials at 940 E 3RD ST STE 202, Casper, WY, 82601, with a listed phone of (307) 237-5510. NPI 1346382918 was issued on 02/12/2007.
Medicare Part D records for calendar year 2023 show 72 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $10K in drug spend, split 38% brand-name and 63% generic by claim count.
Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,326 enrolled providers across 56 states and an average of 179 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 | 1346382918 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | DO |
| Gender | Female |
| NPI Issued | 02/12/2007 |
Hospital and facility affiliations
Facilities where Carrie Merrill, DO 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.
Commonspirit Kansas Inc
Garden City, KS
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 Carrie Merrill, DO. Source: openpaymentsdata.cms.gov.
Total received
$706
Largest payer
INTUITIVE SURGICAL, INC.
Most common payment type
Travel and Lodging
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 · Above average
Carrie Merrill, DO - brand share 38.0%
Obstetrics & Gynecology Physician average
38% brand-name claims vs 63% generic, on 72 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.
72
Total Claims
$10K
Total Drug Cost
17
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 110
- Total Day Supply
- 3,137
- Brand vs Generic
- 38% brand / 63% generic
- Brand Drug Cost
- $8K
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 66.2 years
- Avg HCC Risk Score
- 0.93
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Myrbetriq Mirabegron | 13 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics & Gynecology Physician Overview
How Carrie Merrill, DO fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Carrie Merrill, DO's 72 claims are below the specialty average of 179.
Nearby Obstetrics & Gynecology Physician Providers in Wyoming
Other clinicians with the same primary specialty enrolled in Wyoming, drawn from the same CMS NPPES roster as Merrill.
Dr. Peter Allyn
M.D.
Rock Springs, WY
Dr. Lenis Alvarado-Benitez
MD
Cheyenne, WY
Dr. Jeffrey Anderson
D.O.
Gillette, WY
Dr. Giovannina Anthony
MD
Wilson, WY
Dr. Austin Barnes
MD
Cheyenne, WY
Compare Obstetrics & Gynecology Physician 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 Wyoming medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obstetrics & Gynecology Physician 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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 Wyoming
Frequently Asked Questions
What is Carrie Merrill, DO's specialty? ▼
Carrie Merrill, DO specializes in Obstetrics & Gynecology Physician and practices in Casper, Wyoming. Credentials: DO.
How much does Carrie Merrill, DO prescribe under Medicare Part D? ▼
In 2023, Carrie Merrill, DO wrote 72 Medicare Part D claims totaling $10K in drug costs for 17 beneficiaries.
Where is Carrie Merrill, DO located? ▼
Carrie Merrill, DO is located at 940 E 3RD ST STE 202, Casper, WY, 82601. Phone: (307) 237-5510.
What is Carrie Merrill, DO's NPI number? ▼
Carrie Merrill, DO's National Provider Identifier (NPI) is 1346382918, issued on 02/12/2007.
Does Carrie Merrill, DO prescribe more brand-name or generic drugs? ▼
Carrie Merrill, DO's prescribing is 38% brand-name and 63% generic drugs by claim count, with $8K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Carrie Merrill, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Carrie Merrill, DO's most frequently prescribed drugs include Myrbetriq, Venlafaxine Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carrie Merrill, DO accept Medicare? ▼
Carrie Merrill, DO appears in CMS Medicare data with 72 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carrie Merrill, DO's credentials? ▼
Carrie Merrill, DO's NPI is 1346382918 with credentials DO. 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.