NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1235237918 MD
Verify on CMS → Thomas Arnold, MD
Obstetrics & Gynecology Physician in Dickinson, North Dakota.
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
33
Medicare Part D claims · 16 beneficiaries · Obstetrics & Gynecology Physician avg: 179
MIPS score
73.9/100
▼ 9 pts below national avg 83.1 · Mid-tier
Industry payments
$47.13
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Thomas Arnold, MD reported a CMS MIPS final score of 73.9/100 - below the 83.1 national average - and filed 33 Medicare Part D claims in 2023.
- 73.9/100
- MIPS score · -9 vs avg
- 33
- Part D claims, 2023
- 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.
Thomas Arnold, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
74 11th percentile higher than 11% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Thomas Arnold, MD sits
This provider among obstetrics & gynecology physician peers
Across the 7,413 obstetrics & gynecology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Thomas Arnold, MD writes more Part D claims than 15% of them and scores higher on MIPS quality than 9% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one obstetrics & gynecology physician peer from a representative sample of 60; the gold marker is Thomas Arnold, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Thomas Arnold, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Thomas Arnold, MD?
Below national averagePrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
33 82% vs specialty avg
MIPS final score
73.9/100 9.2 pts vs avg
Specialty distribution in North Dakota
How Obstetrics & Gynecology Physician compares to other specialties among North Dakota providers
Medicare quality performance, MIPS
Thomas Arnold, MD's 2023 MIPS final score plotted against the Obstetrics & Gynecology Physician national average
- MIPS Final Score
- 73.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Obstetrics & Gynecology Physician) - 73.9/100 vs national avg 83.1
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).
Thomas Arnold, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 938 2ND AVE W, Dickinson, ND, 58601, with a listed phone of (701) 456-6000. NPI 1235237918 was issued on 09/20/2006.
Medicare Part D records for calendar year 2023 show 33 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $3K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.9/100 for the 2023 performance year (Quality 55.1, Cost 95.3), compared with the national average of 83.1.
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 | 1235237918 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.8703
Final Score
Avg: 83.1
55.0531
Quality
95.3036
Cost
Reporting: Group practice
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 Thomas Arnold, MD. Source: openpaymentsdata.cms.gov.
Total received
$47
Largest payer
Sage Therapeutics, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
33
Total Claims
$3K
Total Drug Cost
16
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 42
- Total Day Supply
- 1,108
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 0.48
- Gender Split
- 100% female / 0% male
- Age Distribution
- <65: 0, 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.
| Drug | Claims |
|---|---|
| Estradiol | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Obstetrics & Gynecology Physician in ND →
All providers in North Dakota →
Compare specialties →
Obstetrics & Gynecology Physician Overview
How Thomas Arnold, MD 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
Thomas Arnold, MD's 33 claims are below the specialty average of 179.
Nearby Obstetrics & Gynecology Physician Providers in North Dakota
Other clinicians with the same primary specialty enrolled in North Dakota, drawn from the same CMS NPPES roster as Arnold.
Dr. Joseph Adducci
MD
Williston, ND
Dr. John Amsbury
DO
Minot, ND
Dr. Laura Andreson
D.O.
Grand Forks, ND
Dr. Erica Argall
MD
West Fargo, ND
Dr. John Balintona
MD
Fargo, ND
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 North Dakota 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.
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Frequently Asked Questions
What is Thomas Arnold, MD's specialty? ▼
Thomas Arnold, MD specializes in Obstetrics & Gynecology Physician and practices in Dickinson, North Dakota. Credentials: MD.
How much does Thomas Arnold, MD prescribe under Medicare Part D? ▼
In 2023, Thomas Arnold, MD wrote 33 Medicare Part D claims totaling $3K in drug costs for 16 beneficiaries.
What is Thomas Arnold, MD's Medicare quality score? ▼
Thomas Arnold, MD has a CMS MIPS Final Score of 73.9/100 (Quality: 55.1, Cost: 95.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Thomas Arnold, MD located? ▼
Thomas Arnold, MD is located at 938 2ND AVE W, Dickinson, ND, 58601. Phone: (701) 456-6000.
What is Thomas Arnold, MD's NPI number? ▼
Thomas Arnold, MD's National Provider Identifier (NPI) is 1235237918, issued on 09/20/2006.
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 Thomas Arnold, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Thomas Arnold, MD'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 Thomas Arnold, MD accept Medicare? ▼
Thomas Arnold, MD appears in CMS Medicare data with 33 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Arnold, MD's credentials? ▼
Thomas Arnold, MD's NPI is 1235237918 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.