NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1518096577 M.D.
Verify on CMS → Ross Isaacs, M.D.
Nephrology Physician in Charlottesville, 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 10,806 in Nephrology 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
5K
Medicare Part D claims · 426 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
82%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
95.1/100
▲ 12 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Ross Isaacs, M.D. reported a CMS MIPS final score of 95.1/100 - above the 83.5 national average - and filed 4,870 Medicare Part D claims in 2024.
- 95.1/100
- MIPS score · +12 vs avg
- 5K
- Part D claims, 2024
- 82%
- 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.
Federal trust snapshot
What official records show about Ross Isaacs, M.D.
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1518096577), first enumerated 03/05/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,870 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 95.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1518096577 · Nephrology Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-ELITE · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1518096577
- ENUM-MID 2007
- TAX-MID 11K Nephrology Physician
- MIPS-ELITE 95.1/100
- RX-MID 4,870
- BOOK-THIN 268 in Virginia
- PHOTO-FINISH Muhammad Tahir, M.D. · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Matthew Stainbro…
Matthew Stainbrook, DO
95 MIPS pts
- Isaacs · this pr…
Isaacs · this provider
95.1 MIPS pts
- Conrad Deel, M.D…
Conrad Deel, M.D.
95.1 MIPS pts
- Muhammad Tahir, …
Muhammad Tahir, M.D.
95.1 MIPS pts
- Jonathan Bress, …
Jonathan Bress, MD
95.2 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Ross Isaacs, 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.
95 ≥ 78th percentile 78% 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 Ross Isaacs, M.D. sits
This provider among nephrology physician peers
Across the 2,230 nephrology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ross Isaacs, M.D. writes more Part D claims than 95% of them and scores higher on MIPS quality than 80% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one nephrology physician peer from a representative sample of 60; the gold marker is Ross Isaacs, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ross Isaacs, M.D. 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 Ross Isaacs, M.D.?
High performer (top quartile)Primary specialty
Nephrology Physician
Medicare Part D claims
4,870 222% vs specialty avg
MIPS final score
95.1/100 11.6 pts vs avg
Specialty distribution in Virginia
How Nephrology Physician compares to other specialties among Virginia providers
Medicare quality performance, MIPS
Ross Isaacs, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average
- MIPS Final Score
- 95.1/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1518096577 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/05/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
95.1126
Final Score
Measured-score avg: 83.5
86.3184
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Ross Isaacs, 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.
Sentara Medical Group
Williamsburg, VA
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
Ross Isaacs, M.D. - brand share 17.0%
Nephrology Physician average
17% brand-name claims vs 82% generic, on 4,870 2024 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 2024.
4,870
Total Claims
$687K
Total Drug Cost
426
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,455.067
- Total Day Supply
- 304,636
- Brand vs Generic
- 17% brand / 82% generic
- Brand Drug Cost
- $617K
- Generic Drug Cost
- $68K
- Antibiotic Claims
- 108
Patient Demographics
- Average Patient Age
- 75.5 years
- Avg HCC Risk Score
- 1.64
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 19, 65-74: 181, 75-84: 163, 85+: 63
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Ross Isaacs, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
285 claims
- Levothyroxine Sodium
Levothyroxine Sodium
177 claims
- Losartan Potassium
Losartan Potassium
176 claims
- Metformin Hcl Er
Metformin Hcl Er
169 claims
- Amlodipine Besylate
Amlodipine Besylate
142 claims
- Trazodone Hcl
Trazodone Hcl
122 claims
- Eliquis 99
Eliquis
99 claims
- Jardiance 97
Jardiance
97 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 285 |
| Levothyroxine Sodium | 177 |
| Losartan Potassium | 176 |
| Metformin Hcl Er Metformin Hcl | 169 |
| Amlodipine Besylate | 142 |
| Trazodone Hcl | 122 |
| Eliquis Apixaban | 99 |
| Jardiance Empagliflozin | 97 |
| Spironolactone | 92 |
| Carvedilol | 90 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Ross Isaacs, M.D. fits within the Nephrology Physician landscape nationally.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
Ross Isaacs, M.D.'s 4,870 claims are above the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Isaacs, both outside Virginia so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (95.1 here).
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Isaacs.
One of 268 Nephrology Physician providers enrolled in Virginia, 5 are shown here.
Dr. Mark Aarons
M.D.
Arlington, VA
Emaad Abdel-Rahman
Charlottesville, VA
Dr. Walid Abou Assi
M.D.
Richmond, VA
Dr. Christopher Acker
M.D.
Richmond, VA
Dr. Oscar Adler
M.D., PHD
Leesburg, VA
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ross Isaacs, M.D.'s specialty? ▼
Ross Isaacs, M.D. specializes in Nephrology Physician and practices in Charlottesville, Virginia. Credentials: M.D..
How much does Ross Isaacs, M.D. prescribe under Medicare Part D? ▼
In 2024, Ross Isaacs, M.D. wrote 4,870 Medicare Part D claims totaling $687K in drug costs for 426 beneficiaries.
What is Ross Isaacs, M.D.'s Medicare quality score? ▼
Ross Isaacs, M.D. has a CMS MIPS Final Score of 95.1/100 (Quality: 86.3). 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 Ross Isaacs, M.D. located? ▼
Ross Isaacs, M.D. is located at 310 AVON ST STE 9, Charlottesville, VA, 22902. Phone: (434) 581-3271.
What is Ross Isaacs, M.D.'s NPI number? ▼
Ross Isaacs, M.D.'s National Provider Identifier (NPI) is 1518096577, issued on 03/05/2007.
Does Ross Isaacs, M.D. prescribe more brand-name or generic drugs? ▼
Ross Isaacs, M.D.'s prescribing is 17% brand-name and 82% generic drugs by claim count, with $617K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Ross Isaacs, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Ross Isaacs, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ross Isaacs, M.D. accept Medicare? ▼
Ross Isaacs, M.D. appears in CMS Medicare data with 4,870 Part D claims and 426 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ross Isaacs, M.D.'s credentials? ▼
Ross Isaacs, M.D.'s NPI is 1518096577 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.