2026 NPPES data Interventional Cardiology Physician NPI 1578662433 MD
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ROBERT OATFIELD, MD

Interventional Cardiology Physician in BISMARCK, North Dakota. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 238 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.637/100
▼ 3 pts below national avg 83.1 · [object Object]
What the federal data reveals: ROBERT OATFIELD, MD is a Interventional Cardiology Physician ([object Object]) practicing in BISMARCK, North Dakota with a Medicare Part D prescribing footprint of 2K claims across 238 beneficiaries — 10% brand-name prescribing . Their CMS MIPS Final Score of 79.637/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: ROBERT OATFIELD, MD reported a CMS MIPS final score of 79.637 out of 100, below the 83.1 national average, and filed 1,972 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ROBERT OATFIELD, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ROBERT OATFIELD, MD at a glance

Near national average

NPI registry status

Active

Issued 09/21/2006

NPI 1578662433

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

1,972 34% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

MIPS final score

79.637/100 3.462999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in North Dakota

How Interventional Cardiology Physician compares to other specialties among North Dakota providers

North Dakota providers

Interventional Cardiology Physician share within North Dakota

1. Interventional Cardiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Cardiology Physician share within North Dakota

Medicare quality performance — MIPS

ROBERT OATFIELD, MD's 2023 MIPS final score plotted against the Interventional Cardiology Physician national average

Near national average
MIPS Final Score
79.637/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Interventional Cardiology Physician) — 79.637/100 vs national avg 83.1

0%100%National avg83%79.6%
MIPS final score (Interventional Cardiology Physician) — 79.637/100 vs national avg 83.1

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).

ROBERT OATFIELD, MD is a Interventional Cardiology Physician provider practicing in BISMARCK, North Dakota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1578662433. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ROBERT OATFIELD, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 310 N 10TH ST, BISMARCK, ND, 58501, with a listed phone of (701) 530-7500. NPI 1578662433 was issued on 09/21/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OATFIELD most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,972 prescription claims written by this provider, covering 238 Medicare beneficiaries and totaling roughly $203K in drug spend, split 10% brand-name and 90% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.637/100 for the 2023 performance year (Quality 76.0359, Cost 74.4206), compared with the national average of 83.1.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 enrolled providers across 53 states and an average of 2,984 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

310 N 10TH ST
BISMARCK, ND 58501

Provider Details

NPI 1578662433
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 09/21/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

79.637
Final Score
Avg: 83.1
76.0359
Quality
74.4206
Cost
78
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where ROBERT OATFIELD, MD 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.

ST ALEXIUS MEDICAL CENTER
MINOT, ND

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 · Typical

ROBERT OATFIELD, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 1,972 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.

1,972
Total Claims
$203K
Total Drug Cost
238
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,690
Total Day Supply
140,092
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$172K
Generic Drug Cost
$31K

Patient Demographics

Average Patient Age
76.3 years
Avg HCC Risk Score
1.20
Gender Split
39% female / 61% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Metoprolol Succinate
221
Clopidogrel
Clopidogrel Bisulfate
192
Atorvastatin Calcium
162
Eliquis
Apixaban
129
Metoprolol Tartrate
127
Rosuvastatin Calcium
115
Carvedilol
101
Lisinopril
99
Losartan Potassium
89
Amlodipine Besylate
76

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Interventional Cardiology Physician Overview

How ROBERT OATFIELD, MD fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

ROBERT OATFIELD, MD's 1,972 claims are below the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in North Dakota

Other clinicians with the same primary specialty enrolled in North Dakota, drawn from the same CMS NPPES roster as OATFIELD.

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT OATFIELD, MD's specialty?
ROBERT OATFIELD, MD specializes in Interventional Cardiology Physician and practices in BISMARCK, North Dakota. Credentials: MD.
How much does ROBERT OATFIELD, MD prescribe under Medicare Part D?
In 2023, ROBERT OATFIELD, MD wrote 1,972 Medicare Part D claims totaling $203K in drug costs for 238 beneficiaries.
What is ROBERT OATFIELD, MD's Medicare quality score?
ROBERT OATFIELD, MD has a CMS MIPS Final Score of 79.637/100 (Quality: 76.0359, Cost: 74.4206). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ROBERT OATFIELD, MD located?
ROBERT OATFIELD, MD is located at 310 N 10TH ST, BISMARCK, ND, 58501. Phone: (701) 530-7500.
What is ROBERT OATFIELD, MD's NPI number?
ROBERT OATFIELD, MD's National Provider Identifier (NPI) is 1578662433, issued on 09/21/2006.
Does ROBERT OATFIELD, MD prescribe more brand-name or generic drugs?
ROBERT OATFIELD, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $172K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does ROBERT OATFIELD, MD prescribe most often?
Based on 2023 Medicare Part D data, ROBERT OATFIELD, MD's most frequently prescribed drugs include Metoprolol Succinate, Clopidogrel, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT OATFIELD, MD accept Medicare?
ROBERT OATFIELD, MD appears in CMS Medicare data with 1,972 Part D claims and 238 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT OATFIELD, MD's credentials?
ROBERT OATFIELD, MD's NPI is 1578662433 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

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