NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1366860496 D.O.
Verify on CMS → Krista Isaac, D.O.
Hematology & Oncology 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 11,232 in Hematology & 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
491
Medicare Part D claims · 130 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.2/100
▲ 10 pts above national avg 83.1 · Exceptional
Industry payments
$2.5K
119 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
Krista Isaac, D.O. reported a CMS MIPS final score of 93.2/100 - above the 83.1 national average - and filed 491 Medicare Part D claims in 2023.
- 93.2/100
- MIPS score · +10 vs avg
- 491
- Part D claims, 2023
- 75%
- 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.
Krista Isaac, D.O.'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 Krista Isaac, D.O. sits
This provider among hematology & oncology physician peers
Across the 4,233 hematology & oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Krista Isaac, D.O. writes more Part D claims than 36% of them and scores higher on MIPS quality than 71% - placing this provider in the lower-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 hematology & oncology physician peer from a representative sample of 60; the gold marker is Krista Isaac, D.O.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Krista Isaac, D.O. 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 Krista Isaac, D.O.?
High performer (top quartile)Primary specialty
Hematology & Oncology Physician
Medicare Part D claims
491 42% vs specialty avg
MIPS final score
93.2/100 10.1 pts vs avg
Specialty distribution in Virginia
How Hematology & Oncology Physician compares to other specialties among Virginia providers
Medicare quality performance, MIPS
Krista Isaac, D.O.'s 2023 MIPS final score plotted against the Hematology & Oncology Physician national average
- MIPS Final Score
- 93.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology & Oncology Physician) - 93.2/100 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).
Krista Isaac, D.O. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding D.O. credentials at 1215 LEE ST - BOX NUMBER 800716, Charlottesville, VA, 22908, with a listed phone of (434) 924-9333. NPI 1366860496 was issued on 04/05/2014.
Medicare Part D records for calendar year 2023 show 491 prescription claims written by this provider, covering 130 Medicare beneficiaries and totaling roughly $336K in drug spend, split 25% brand-name and 75% generic by claim count, with an opioid prescribing rate of 11.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.2/100 for the 2023 performance year (Quality 75.1, Cost 98.2), compared with the national average of 83.1.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,232 enrolled providers across 54 states and an average of 847 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 | 1366860496 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 04/05/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
93.1879
Final Score
Avg: 83.1
75.124
Quality
98.246
Cost
94
Promoting Interoperability
Reporting: subgroup
Hospital and facility affiliations
Facilities where Krista Isaac, D.O. 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.
Alliance Cancer Specialists P.C.
Langhorne, PA
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 Krista Isaac, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$2.5K
Largest payer
Novartis Pharmaceuticals 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 · Above average
Krista Isaac, D.O. - brand share 25.0%
Hematology & Oncology Physician average
25% brand-name claims vs 75% generic, on 491 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.
491
Total Claims
$336K
Total Drug Cost
130
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 668
- Total Day Supply
- 16,338
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $317K
- Generic Drug Cost
- $19K
- Opioid Claims
- 57 (11.6% rate)
- Antibiotic Claims
- 31
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.84
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 14, 65-74: 57, 75-84: 45, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Krista Isaac, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
67 claims
- Letrozole
Letrozole
39 claims
- Oxycodone Hcl
Oxycodone Hcl
36 claims
- Tamoxifen Citrate 23
Tamoxifen Citrate
23 claims
- Xarelto 23
Xarelto
23 claims
- Anastrozole 21
Anastrozole
21 claims
- Ondansetron Odt 21
Ondansetron Odt
21 claims
- Prednisone 21
Prednisone
21 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 67 |
| Letrozole | 39 |
| Oxycodone Hcl | 36 |
| Tamoxifen Citrate | 23 |
| Xarelto Rivaroxaban | 23 |
| Anastrozole | 21 |
| Ondansetron Odt Ondansetron | 21 |
| Prednisone | 21 |
| Dexamethasone | 19 |
| Granisetron Hcl | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hematology & Oncology Physician Overview
How Krista Isaac, D.O. fits within the Hematology & Oncology Physician landscape nationally.
11,232
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Krista Isaac, D.O.'s 491 claims are below the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Isaac.
Dr. Nagla Abdel Karim
MD
Fairfax, VA
Dr. Shaad Abedin
MD FACP
Fredericksburg, VA
Dr. Kimberly Aderhold
DO
Salem, VA
Dr. Vanya Aggarwal
MD
Fairfax, VA
Dr. Aarti Ailawadi
P.A.
Charlottesville, VA
Compare Hematology & 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 Virginia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hematology & 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 Krista Isaac, D.O.'s specialty? ▼
Krista Isaac, D.O. specializes in Hematology & Oncology Physician and practices in Charlottesville, Virginia. Credentials: D.O..
How much does Krista Isaac, D.O. prescribe under Medicare Part D? ▼
In 2023, Krista Isaac, D.O. wrote 491 Medicare Part D claims totaling $336K in drug costs for 130 beneficiaries.
What is Krista Isaac, D.O.'s Medicare quality score? ▼
Krista Isaac, D.O. has a CMS MIPS Final Score of 93.2/100 (Quality: 75.1, Cost: 98.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Krista Isaac, D.O. located? ▼
Krista Isaac, D.O. is located at 1215 LEE ST - BOX NUMBER 800716, Charlottesville, VA, 22908. Phone: (434) 924-9333.
What is Krista Isaac, D.O.'s NPI number? ▼
Krista Isaac, D.O.'s National Provider Identifier (NPI) is 1366860496, issued on 04/05/2014.
Does Krista Isaac, D.O. prescribe more brand-name or generic drugs? ▼
Krista Isaac, D.O.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $317K in brand drug costs.
Does Krista Isaac, D.O. prescribe opioids? ▼
Yes, Krista Isaac, D.O. had 57 opioid claims in 2023 with an opioid prescribing rate of 11.6%.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,232 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Krista Isaac, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Krista Isaac, D.O.'s most frequently prescribed drugs include Eliquis, Letrozole, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Krista Isaac, D.O. accept Medicare? ▼
Krista Isaac, D.O. appears in CMS Medicare data with 491 Part D claims and 130 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Krista Isaac, D.O.'s credentials? ▼
Krista Isaac, D.O.'s NPI is 1366860496 with credentials D.O.. 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.