NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1538297593 DO
Verify on CMS → Donald Robertson, DO
Internal Medicine Physician in Iuka, Mississippi.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in Internal Medicine 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
11K
Medicare Part D claims · 568 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.1/100
▲ 10 pts above national avg 83.1 · Exceptional
Industry payments
$607.93
38 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
Donald Robertson, DO reported a CMS MIPS final score of 93.1/100 - above the 83.1 national average - and filed 10,829 Medicare Part D claims in 2023.
- 93.1/100
- MIPS score · +10 vs avg
- 11K
- Part D claims, 2023
- 88%
- 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.
Donald Robertson, DO's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
93 Top 29% higher than 71% 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 Donald Robertson, DO sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Donald Robertson, DO writes more Part D claims than 93% of them and scores higher on MIPS quality than 72% - placing this provider in the high-volume, high-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 internal medicine physician peer from a representative sample of 60; the gold marker is Donald Robertson, DO. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Donald Robertson, DO 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).
What does the federal data show about Donald Robertson, DO?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
10,829 299% vs specialty avg
MIPS final score
93.1/100 10 pts vs avg
Specialty distribution in Mississippi
How Internal Medicine Physician compares to other specialties among Mississippi providers
Medicare quality performance, MIPS
Donald Robertson, DO's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 93.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 93.1/100 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).
Donald Robertson, DO appears in the CMS NPPES registry as an Internal Medicine Physician provider holding DO credentials at 1771 CURTIS DR, Iuka, MS, 38852, with a listed phone of (662) 423-6014. NPI 1538297593 was issued on 03/01/2007.
Medicare Part D records for calendar year 2023 show 10,829 prescription claims written by this provider, covering 568 Medicare beneficiaries and totaling roughly $1.2 million in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 4.4%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.1/100 for the 2023 performance year (Quality 83.1), compared with the national average of 83.1.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1538297593 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 03/01/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
93.1001
Final Score
Avg: 83.1
83.0821
Quality
88
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Donald Robertson, 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.
North Mississippi Medical Clinics Inc
Iuka, MS
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 Donald Robertson, DO. Source: openpaymentsdata.cms.gov.
Total received
$608
Largest payer
Novo Nordisk 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.
Brand vs generic prescribing mix · Typical
Donald Robertson, DO - brand share 12.0%
Internal Medicine Physician average
12% brand-name claims vs 88% generic, on 10,829 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.
10,829
Total Claims
$1.2M
Total Drug Cost
568
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 19,878
- Total Day Supply
- 551,597
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $954K
- Generic Drug Cost
- $267K
- Opioid Claims
- 479 (4.4% rate)
- Antibiotic Claims
- 185
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.70
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 110, 65-74: 203, 75-84: 185, 85+: 70
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Donald Robertson, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
386 claims
- Gabapentin
Gabapentin
344 claims
- Pantoprazole Sodium
Pantoprazole Sodium
330 claims
- Atorvastatin Calcium
Atorvastatin Calcium
316 claims
- Amlodipine Besylate
Amlodipine Besylate
305 claims
- Montelukast Sodium
Montelukast Sodium
287 claims
- Lisinopril
Lisinopril
281 claims
- Metoprolol Succinate
Metoprolol Succinate
234 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 386 |
| Gabapentin | 344 |
| Pantoprazole Sodium | 330 |
| Atorvastatin Calcium | 316 |
| Amlodipine Besylate | 305 |
| Montelukast Sodium | 287 |
| Lisinopril | 281 |
| Metoprolol Succinate | 234 |
| Losartan Potassium | 229 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 208 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Donald Robertson, DO fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Donald Robertson, DO's 10,829 claims are above the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Mississippi
Other clinicians with the same primary specialty enrolled in Mississippi, drawn from the same CMS NPPES roster as Robertson.
Dr. Aja Abai
M.D.
McComb, MS
Dr. Elias Abboud
MD
Lexington, MS
Dr. Mohamed Abdel Latif
MD
Columbus, MS
Dr. Ashraf Abdo
MD
Jackson, MS
John Abernathy
Jackson, MS
Compare Internal Medicine 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 Mississippi medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine 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 Donald Robertson, DO's specialty? ▼
Donald Robertson, DO specializes in Internal Medicine Physician and practices in Iuka, Mississippi. Credentials: DO.
How much does Donald Robertson, DO prescribe under Medicare Part D? ▼
In 2023, Donald Robertson, DO wrote 10,829 Medicare Part D claims totaling $1.2M in drug costs for 568 beneficiaries.
What is Donald Robertson, DO's Medicare quality score? ▼
Donald Robertson, DO has a CMS MIPS Final Score of 93.1/100 (Quality: 83.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Donald Robertson, DO located? ▼
Donald Robertson, DO is located at 1771 CURTIS DR, Iuka, MS, 38852. Phone: (662) 423-6014.
What is Donald Robertson, DO's NPI number? ▼
Donald Robertson, DO's National Provider Identifier (NPI) is 1538297593, issued on 03/01/2007.
Does Donald Robertson, DO prescribe more brand-name or generic drugs? ▼
Donald Robertson, DO's prescribing is 12% brand-name and 88% generic drugs by claim count, with $954K in brand drug costs.
Does Donald Robertson, DO prescribe opioids? ▼
Yes, Donald Robertson, DO had 479 opioid claims in 2023 with an opioid prescribing rate of 4.4%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Donald Robertson, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Donald Robertson, DO's most frequently prescribed drugs include Rosuvastatin Calcium, Gabapentin, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Donald Robertson, DO accept Medicare? ▼
Donald Robertson, DO appears in CMS Medicare data with 10,829 Part D claims and 568 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Donald Robertson, DO's credentials? ▼
Donald Robertson, DO's NPI is 1538297593 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.
- 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.
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.