NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1639842933
Verify on CMS → Constance Kass
Medical Physician Assistant in Evergreen Park, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,694 in Medical Physician Assistant, 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
1K
Medicare Part D claims · 334 beneficiaries · Medical Physician Assistant avg: 1K
Industry payments
$2.4K
110 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Constance Kass filed 1,043 Medicare Part D claims in 2024 as a Medical Physician Assistant in Evergreen Park, Illinois.
- 1K
- Part D claims, 2024
- $2.4K
- industry payments (Sunshine Act)
- ≥75th
- pct by Part D claim volume (lower-bound band)
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 Constance Kass
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639842933), first enumerated 08/01/2021.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,043 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$2.4K in reported industry payments (110 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Constance Kass's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- 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 1639842933 · Medical Physician Assistant
NPI-10 · ENUM-RECENT · TAX-MID · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1639842933
- ENUM-RECENT 2021
- TAX-MID 41K Medical Physician
- RX-MID 1,043
- BOOK-LIGHT 797 in Illinois
- PHOTO-ENUM Alyssa Diver, PA-C · 2021
Constance Kass's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,043 ≥ 75th percentile 75% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Constance Kass?
Quality data not reportedPrimary specialty
Medical Physician Assistant
Medicare Part D claims
1,043 8% vs specialty avg
Specialty distribution in Illinois
How Medical Physician Assistant compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Medical Physician Assistant. Verify directly:
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 | 1639842933 |
|---|---|
| Specialty | Medical Physician Assistant |
| Gender | Female |
| NPI Issued | 08/01/2021 |
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 Constance Kass. Source: openpaymentsdata.cms.gov.
Total received
$2.4K
Largest payer
ABBVIE 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.
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Constance Kass. To verify Constance Kass's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
1,043
Total Claims
$47K
Total Drug Cost
334
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,024.3
- Total Day Supply
- 53,682
- Generic Drug Cost
- $12K
- Opioid Claims
- 21 (2.0% rate)
- Antibiotic Claims
- 152
Patient Demographics
- Average Patient Age
- 72.9 years
- Avg HCC Risk Score
- 1.04
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 19, 65-74: 190, 75-84: 94, 85+: 31
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Constance Kass prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
61 claims
- Azithromycin
Azithromycin
54 claims
- Losartan Potassium
Losartan Potassium
42 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
34 claims
- Omeprazole
Omeprazole
29 claims
- Amlodipine Besylate
Amlodipine Besylate
26 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
26 claims
- Metformin Hcl
Metformin Hcl
26 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 61 |
| Azithromycin | 54 |
| Losartan Potassium | 42 |
| Rosuvastatin Calcium | 34 |
| Omeprazole | 29 |
| Amlodipine Besylate | 26 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 26 |
| Metformin Hcl | 26 |
| Fluticasone Propionate | 24 |
| Lisinopril | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Physician Assistant Overview
How Constance Kass fits within the Medical Physician Assistant landscape nationally.
40,694
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,139
Avg Claims per Provider
Constance Kass's 1,043 claims are below the specialty average of 1,139.
Nationwide Medical Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Kass, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2021)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Medical Physician Assistant Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Kass.
One of 797 Medical Physician Assistant providers enrolled in Illinois, 5 are shown here.
Ahmad Abdelghani
PA-C
Schaumburg, IL
Jeneson Abraham
P.A.
Chicago, IL
Rosalva Acosta
PA-C
Gurnee, IL
Samantha Adamczyk
PA-C
Naperville, IL
Kenneth Adams
PA-C
Chillicothe, IL
Compare Medical Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Constance Kass's specialty? ▼
Constance Kass specializes in Medical Physician Assistant and practices in Evergreen Park, Illinois.
How much does Constance Kass prescribe under Medicare Part D? ▼
In 2024, Constance Kass wrote 1,043 Medicare Part D claims totaling $47K in drug costs for 334 beneficiaries.
Where is Constance Kass located? ▼
Constance Kass is located at 9760 S KEDZIE AVE, Evergreen Park, IL, 60805. Phone: (708) 423-8150.
What is Constance Kass's NPI number? ▼
Constance Kass's National Provider Identifier (NPI) is 1639842933, issued on 08/01/2021.
Does Constance Kass prescribe opioids? ▼
Yes, Constance Kass had 21 opioid claims in 2024 with an opioid prescribing rate of 2.0%.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,694 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,139 Medicare Part D claims per year.
What drugs does Constance Kass prescribe most often? ▼
Based on 2024 Medicare Part D data, Constance Kass's most frequently prescribed drugs include Atorvastatin Calcium, Azithromycin, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Constance Kass accept Medicare? ▼
Constance Kass appears in CMS Medicare data with 1,043 Part D claims and 334 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Constance Kass's credentials? ▼
Constance Kass's NPI is 1639842933. 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.
- 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.