NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1649392309 NP
Verify on CMS → Alison Karpa, NP
Nurse Practitioner in Olney, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 89,808 in Nurse Practitioner, 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 · 574 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.4/100
▼ 0 pts below national avg 83.5 · Above neutral
Industry payments
$382.03
3 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Alison Karpa, NP reported a CMS MIPS final score of 83.4/100 - below the 83.5 national average - and filed 1,720 Medicare Part D claims in 2024.
- 83.4/100
- MIPS score · 0 vs avg
- 2K
- Part D claims, 2024
- 83%
- generic prescribing
- $382.03
- industry payments (Sunshine Act)
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 Alison Karpa, NP
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 1649392309), first enumerated 04/04/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,720 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 83.4/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Industry payment transparency
$382.03 in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1649392309 · Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-INLINE · RX-MID · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1649392309
- ENUM-MID 2007
- TAX-MEGA 90K Nurse Practitioner
- MIPS-INLINE 83.4/100
- RX-MID 1,720
- BOOK-LIGHT 1,273 in Maryland
- PHOTO-FINISH Jennifer Audibert, NP · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Karpa · this pro…
Karpa · this provider
83.4 MIPS pts
- Shayna Dallas, F…
Shayna Dallas, FNP-C
83.4 MIPS pts
- Jennifer Audiber…
Jennifer Audibert, NP
83.4 MIPS pts
- Krista Clennan, …
Krista Clennan, APRN
83.4 MIPS pts
- Ashley Corkill, …
Ashley Corkill, APRN
83.4 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Alison Karpa, NP'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.
83 ≥ 39th percentile 39% 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 Alison Karpa, NP sits
This provider among nurse practitioner peers
Across the 13,205 nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Alison Karpa, NP writes more Part D claims than 81% of them and scores higher on MIPS quality than 43% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one nurse practitioner peer from a representative sample of 60; the gold marker is Alison Karpa, NP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Alison Karpa, NP?
Near national averagePrimary specialty
Nurse Practitioner
Medicare Part D claims
1,720 50% vs specialty avg
MIPS final score
83.4/100 0.1 pts vs avg
Specialty distribution in Maryland
How Nurse Practitioner compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Alison Karpa, NP's 2023 MIPS final score plotted against the Nurse Practitioner national average
- MIPS Final Score
- 83.4/100
- 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 | 1649392309 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | NP |
| Gender | Female |
| NPI Issued | 04/04/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
83.4224
Final Score
Measured-score avg: 83.5
77.9282
Quality
66.8131
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Alison Karpa, NP. Source: openpaymentsdata.cms.gov.
Total received
$382
Largest payer
Abbott Laboratories
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
Alison Karpa, NP - brand share 17.0%
Nurse Practitioner average
17% brand-name claims vs 83% generic, on 1,720 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.
1,720
Total Claims
$408K
Total Drug Cost
574
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,791.967
- Total Day Supply
- 143,390
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $369K
- Generic Drug Cost
- $40K
Patient Demographics
- Average Patient Age
- 76.6 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 42% female / 58% male
- Age Distribution
- <65: 11, 65-74: 216, 75-84: 275, 85+: 72
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Alison Karpa, NP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Metoprolol Succinate
Metoprolol Succinate
190 claims
- Atorvastatin Calcium
Atorvastatin Calcium
186 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
145 claims
- Eliquis
Eliquis
129 claims
- Losartan Potassium
Losartan Potassium
90 claims
- Amlodipine Besylate
Amlodipine Besylate
81 claims
- Ezetimibe 72
Ezetimibe
72 claims
- Repatha Sureclick 37
Repatha Sureclick
37 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 190 |
| Atorvastatin Calcium | 186 |
| Rosuvastatin Calcium | 145 |
| Eliquis Apixaban | 129 |
| Losartan Potassium | 90 |
| Amlodipine Besylate | 81 |
| Ezetimibe | 72 |
| Repatha Sureclick Evolocumab | 37 |
| Chlorthalidone | 36 |
| Lisinopril | 36 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Alison Karpa, NP fits within the Nurse Practitioner landscape nationally.
89,808
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,144
Avg Claims per Provider
Alison Karpa, NP's 1,720 claims are above the specialty average of 1,144.
Nationwide Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Karpa, both outside Maryland so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (83.4 here).
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nurse Practitioner Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Karpa.
One of 1,273 Nurse Practitioner providers enrolled in Maryland, 5 are shown here.
Deepa Abhilash
CRNP
Salisbury, MD
Meron Abiy
Rockville, MD
Krystal Abucevicz-Swick
CRNP
Cumberland, MD
Lilian Achi
Bowie, MD
Ann Acosta
Waldorf, MD
Compare Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Alison Karpa, NP's specialty? ▼
Alison Karpa, NP specializes in Nurse Practitioner and practices in Olney, Maryland. Credentials: NP.
How much does Alison Karpa, NP prescribe under Medicare Part D? ▼
In 2024, Alison Karpa, NP wrote 1,720 Medicare Part D claims totaling $408K in drug costs for 574 beneficiaries.
What is Alison Karpa, NP's Medicare quality score? ▼
Alison Karpa, NP has a CMS MIPS Final Score of 83.4/100 (Quality: 77.9, Cost: 66.8). 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 Alison Karpa, NP located? ▼
Alison Karpa, NP is located at 18101 PRINCE PHILIP DR, Olney, MD, 20832. Phone: (301) 570-7679.
What is Alison Karpa, NP's NPI number? ▼
Alison Karpa, NP's National Provider Identifier (NPI) is 1649392309, issued on 04/04/2007.
Does Alison Karpa, NP prescribe more brand-name or generic drugs? ▼
Alison Karpa, NP's prescribing is 17% brand-name and 83% generic drugs by claim count, with $369K in brand drug costs.
How many Nurse Practitioner providers are there in the US? ▼
There are 89,808 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,144 Medicare Part D claims per year.
What drugs does Alison Karpa, NP prescribe most often? ▼
Based on 2024 Medicare Part D data, Alison Karpa, NP's most frequently prescribed drugs include Metoprolol Succinate, Atorvastatin Calcium, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alison Karpa, NP accept Medicare? ▼
Alison Karpa, NP appears in CMS Medicare data with 1,720 Part D claims and 574 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alison Karpa, NP's credentials? ▼
Alison Karpa, NP's NPI is 1649392309 with credentials NP. 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.