NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1558450841 M.D.
Verify on CMS → John Watkins, M.D.
Radiation Oncology Physician in Bismarck, 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 6,018 in Radiation Oncology 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
229
Medicare Part D claims · 80 beneficiaries · Radiation Oncology Physician avg: 186
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
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
John Watkins, M.D. filed 229 Medicare Part D claims in 2023 as a Radiation Oncology Physician in Bismarck, North Dakota, prescribing 93% generic.
- 229
- Part D claims, 2023
- 93%
- 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.
John Watkins, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
229 49th percentile higher than 49% 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)
John Watkins, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 John Watkins, M.D.?
Quality data not reportedPrimary specialty
Radiation Oncology Physician
Medicare Part D claims
229 23% vs specialty avg
Specialty distribution in North Dakota
How Radiation Oncology Physician compares to other specialties among North Dakota 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 Radiation Oncology 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).
John Watkins, M.D. appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding M.D. credentials at 500 N 8TH ST, Bismarck, ND, 58501, with a listed phone of (701) 222-6100. NPI 1558450841 was issued on 10/12/2006.
Medicare Part D records for calendar year 2023 show 229 prescription claims written by this provider, covering 80 Medicare beneficiaries and totaling roughly $4K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 5.2%.
Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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 | 1558450841 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/12/2006 |
Hospital and facility affiliations
Facilities where John Watkins, M.D. 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.
Bismarck Cancer Center
Bismarck, ND
Sanford Health OF Northern Minnesota
Bemidji, MN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
John Watkins, M.D. - brand share 7.0%
Radiation Oncology Physician average
7% brand-name claims vs 93% generic, on 229 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.
229
Total Claims
$4K
Total Drug Cost
80
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 327
- Total Day Supply
- 7,111
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $577
- Generic Drug Cost
- $4K
- Opioid Claims
- 12 (5.2% rate)
- Antibiotic Claims
- 32
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 1.43
- Gender Split
- 23% female / 78% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Watkins, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
70 claims
- Lorazepam
Lorazepam
34 claims
- Levofloxacin 21
Levofloxacin
21 claims
- Venlafaxine Hcl Er 14
Venlafaxine Hcl Er
14 claims
- Omeprazole 13
Omeprazole
13 claims
- Silver Sulfadiazine 13
Silver Sulfadiazine
13 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 70 |
| Lorazepam | 34 |
| Levofloxacin | 21 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 14 |
| Omeprazole | 13 |
| Silver Sulfadiazine | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Radiation Oncology Physician Overview
How John Watkins, M.D. fits within the Radiation Oncology Physician landscape nationally.
6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider
John Watkins, M.D.'s 229 claims are above the specialty average of 186.
Nearby Radiation Oncology Physician Providers in North Dakota
Other clinicians with the same primary specialty enrolled in North Dakota, drawn from the same CMS NPPES roster as Watkins.
Dr. Robert Arusell
MD
Fargo, ND
Dr. Dennis Bier
MD
Fargo, ND
Dr. Miran Blanchard
MD
Fargo, ND
Dr. Mark Cooper
MD
Fargo, ND
Dr. Salah Dajani
MD
Fargo, ND
Compare Radiation Oncology 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 Radiation Oncology 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 John Watkins, M.D.'s specialty? ▼
John Watkins, M.D. specializes in Radiation Oncology Physician and practices in Bismarck, North Dakota. Credentials: M.D..
How much does John Watkins, M.D. prescribe under Medicare Part D? ▼
In 2023, John Watkins, M.D. wrote 229 Medicare Part D claims totaling $4K in drug costs for 80 beneficiaries.
Where is John Watkins, M.D. located? ▼
John Watkins, M.D. is located at 500 N 8TH ST, Bismarck, ND, 58501. Phone: (701) 222-6100.
What is John Watkins, M.D.'s NPI number? ▼
John Watkins, M.D.'s National Provider Identifier (NPI) is 1558450841, issued on 10/12/2006.
Does John Watkins, M.D. prescribe more brand-name or generic drugs? ▼
John Watkins, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $577 in brand drug costs.
Does John Watkins, M.D. prescribe opioids? ▼
Yes, John Watkins, M.D. had 12 opioid claims in 2023 with an opioid prescribing rate of 5.2%.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
What drugs does John Watkins, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Watkins, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Lorazepam, Levofloxacin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Watkins, M.D. accept Medicare? ▼
John Watkins, M.D. appears in CMS Medicare data with 229 Part D claims and 80 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Watkins, M.D.'s credentials? ▼
John Watkins, M.D.'s NPI is 1558450841 with credentials M.D.. 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.