NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1437348851 M.D.
Verify on CMS → Katherine Roberts, M.D.
Endocrinology, Diabetes & Metabolism Physician in Williamsburg, Virginia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,871 in Endocrinology, Diabetes & Metabolism 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
2K
Medicare Part D claims · 215 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
40%
generic claims · 50% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
72.6/100
▼ 11 pts below national avg 83.5 · Mid-tier
Industry payments
$952.43
44 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Katherine Roberts, M.D. reported a CMS MIPS final score of 72.6/100 - below the 83.5 national average - and filed 2,046 Medicare Part D claims in 2023.
- 72.6/100
- MIPS score · -11 vs avg
- 2K
- Part D claims, 2023
- 40%
- 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.
Katherine Roberts, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
73 ≥ 10th percentile 10% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Katherine Roberts, M.D. sits
This provider among endocrinology, diabetes & metabolism physician peers
Across the 2,341 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, Katherine Roberts, M.D. writes more Part D claims than 45% of them and scores higher on MIPS quality than 12% - 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 endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Katherine Roberts, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Katherine Roberts, M.D. 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 Katherine Roberts, M.D.?
Below national averagePrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
2,046 22% vs specialty avg
MIPS final score
72.6/100 10.9 pts vs avg
Specialty distribution in Virginia
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Virginia providers
Medicare quality performance, MIPS
Katherine Roberts, M.D.'s 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 72.6/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 72.6/100 vs national avg 83.5
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).
Katherine Roberts, M.D. appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 7151 RICHMOND RD UNIT 402, Williamsburg, VA, 23188, with a listed phone of (757) 565-9586. NPI 1437348851 was issued on 10/22/2007.
Medicare Part D records for calendar year 2023 show 2,046 prescription claims written by this provider, covering 215 Medicare beneficiaries and totaling roughly $748K in drug spend, split 50% brand-name and 40% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 72.6/100 for the 2023 performance year (Quality 74.6, Cost 42.6), compared with the 83.5 average among clinicians with a measured score.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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 | 1437348851 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 10/22/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
72.6159
Final Score
Measured-score avg: 83.5
74.626
Quality
42.5515
Cost
Reporting: Individual
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 Katherine Roberts, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$952
Largest payer
Mannkind Corporation
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 · Brand-heavy
Katherine Roberts, M.D. - brand share 50.0%
Endocrinology, Diabetes & Metabolism Physician average
50% brand-name claims vs 40% generic, on 2,046 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.
2,046
Total Claims
$748K
Total Drug Cost
215
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,604
- Total Day Supply
- 136,241
- Brand vs Generic
- 50% brand / 40% generic
- Brand Drug Cost
- $683K
- Generic Drug Cost
- $33K
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 66% female / 34% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Katherine Roberts, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Synthroid
Synthroid
225 claims
- Levothyroxine Sodium
Levothyroxine Sodium
206 claims
- Ozempic 83
Ozempic
83 claims
- Metformin Hcl Er 82
Metformin Hcl Er
82 claims
- Jardiance 74
Jardiance
74 claims
- Metformin Hcl 69
Metformin Hcl
69 claims
- Levoxyl 46
Levoxyl
46 claims
- Rosuvastatin Calcium 45
Rosuvastatin Calcium
45 claims
| Drug | Claims |
|---|---|
| Synthroid Levothyroxine Sodium | 225 |
| Levothyroxine Sodium | 206 |
| Ozempic Semaglutide | 83 |
| Metformin Hcl Er Metformin Hcl | 82 |
| Jardiance Empagliflozin | 74 |
| Metformin Hcl | 69 |
| Levoxyl Levothyroxine Sodium | 46 |
| Rosuvastatin Calcium | 45 |
| Humalog Kwikpen U-100 Insulin Lispro | 44 |
| Simvastatin | 40 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in VA →
All providers in Virginia →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Katherine Roberts, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Katherine Roberts, M.D.'s 2,046 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Roberts.
Dr. Mustapha Abdul-Rahman
MD
Winchester, VA
Dr. Robert Adler
M.D.
Richmond, VA
Dr. Samina Afreen
MD
Charlottesville, VA
Dr. Miriam Ahmad
M.D.
Falls Church, VA
Dr. Ahmed Al Dabbagh
MBCHB
Suffolk, VA
Compare Endocrinology, Diabetes & Metabolism 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 Virginia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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 Katherine Roberts, M.D.'s specialty? ▼
Katherine Roberts, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Williamsburg, Virginia. Credentials: M.D..
How much does Katherine Roberts, M.D. prescribe under Medicare Part D? ▼
In 2023, Katherine Roberts, M.D. wrote 2,046 Medicare Part D claims totaling $748K in drug costs for 215 beneficiaries.
What is Katherine Roberts, M.D.'s Medicare quality score? ▼
Katherine Roberts, M.D. has a CMS MIPS Final Score of 72.6/100 (Quality: 74.6, Cost: 42.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Katherine Roberts, M.D. located? ▼
Katherine Roberts, M.D. is located at 7151 RICHMOND RD UNIT 402, Williamsburg, VA, 23188. Phone: (757) 565-9586.
What is Katherine Roberts, M.D.'s NPI number? ▼
Katherine Roberts, M.D.'s National Provider Identifier (NPI) is 1437348851, issued on 10/22/2007.
Does Katherine Roberts, M.D. prescribe more brand-name or generic drugs? ▼
Katherine Roberts, M.D.'s prescribing is 50% brand-name and 40% generic drugs by claim count, with $683K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Katherine Roberts, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Katherine Roberts, M.D.'s most frequently prescribed drugs include Synthroid, Levothyroxine Sodium, Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Katherine Roberts, M.D. accept Medicare? ▼
Katherine Roberts, M.D. appears in CMS Medicare data with 2,046 Part D claims and 215 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Katherine Roberts, M.D.'s credentials? ▼
Katherine Roberts, M.D.'s NPI is 1437348851 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.
- 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
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.