NPI registry status
Active
2026 NPPES data Adult Health Clinical Nurse Specialist NPI 1679509327 APRN
Verify on CMS → Jocelyn Ko, APRN
Adult Health Clinical Nurse Specialist in Chicago, 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 1,379 in Adult Health Clinical Nurse Specialist, 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
228
Medicare Part D claims · 51 beneficiaries · Adult Health Clinical Nurse Specialist avg: 1K
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
87.1/100
▲ 4 pts above national avg 83.1 · Above neutral
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
Jocelyn Ko, APRN reported a CMS MIPS final score of 87.1/100 - above the 83.1 national average - and filed 228 Medicare Part D claims in 2023.
- 87.1/100
- MIPS score · +4 vs avg
- 228
- Part D claims, 2023
- 82%
- generic prescribing
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.
Jocelyn Ko, APRN's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
87 Top 46% higher than 54% 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 Jocelyn Ko, APRN sits
This provider among adult health clinical nurse specialist peers
Across the 144 adult health clinical nurse specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Jocelyn Ko, APRN writes more Part D claims than 34% of them and scores higher on MIPS quality than 56% - 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 adult health clinical nurse specialist peer from a representative sample of 60; the gold marker is Jocelyn Ko, APRN. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Jocelyn Ko, APRN?
High performer (top quartile)Primary specialty
Adult Health Clinical Nurse Specialist
Medicare Part D claims
228 79% vs specialty avg
MIPS final score
87.1/100 4 pts vs avg
Specialty distribution in Illinois
How Adult Health Clinical Nurse Specialist compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Jocelyn Ko, APRN's 2023 MIPS final score plotted against the Adult Health Clinical Nurse Specialist national average
- MIPS Final Score
- 87.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Adult Health Clinical Nurse Specialist) - 87.1/100 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).
Jocelyn Ko, APRN appears in the CMS NPPES registry as an Adult Health Clinical Nurse Specialist provider holding APRN credentials at 820 S. WOOD ST, Chicago, IL, 60612, with a listed phone of (847) 924-3756. NPI 1679509327 was issued on 06/24/2006.
Medicare Part D records for calendar year 2023 show 228 prescription claims written by this provider, covering 51 Medicare beneficiaries and totaling roughly $87K in drug spend, split 18% brand-name and 82% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.1/100 for the 2023 performance year (Quality 70.8, Cost 52.8), compared with the national average of 83.1.
Adult Health Clinical Nurse Specialist is a narrow specialty nationwide, with 1,379 enrolled providers across 49 states and an average of 1,088 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 | 1679509327 |
|---|---|
| Specialty | Adult Health Clinical Nurse Specialist |
| Credentials | APRN |
| Gender | Female |
| NPI Issued | 06/24/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
87.0887
Final Score
Avg: 83.1
70.7998
Quality
52.8291
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Jocelyn Ko, APRN. To verify Jocelyn Ko, APRN'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.
Brand vs generic prescribing mix · Typical
Jocelyn Ko, APRN - brand share 18.0%
Adult Health Clinical Nurse Specialist average
18% brand-name claims vs 82% generic, on 228 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.
228
Total Claims
$87K
Total Drug Cost
51
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 420
- Total Day Supply
- 12,475
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $36K
- Generic Drug Cost
- $51K
Patient Demographics
- Average Patient Age
- 64.1 years
- Avg HCC Risk Score
- 7.43
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 25, 65-74: 14, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jocelyn Ko, APRN prescribes most
Top Medicare Part D drugs by claim count, 2023
- Sevelamer Carbonate
Sevelamer Carbonate
49 claims
- Furosemide
Furosemide
26 claims
- Calcium Acetate 17
Calcium Acetate
17 claims
- Carvedilol 16
Carvedilol
16 claims
- Nifedipine Er 16
Nifedipine Er
16 claims
| Drug | Claims |
|---|---|
| Sevelamer Carbonate | 49 |
| Furosemide | 26 |
| Calcium Acetate | 17 |
| Carvedilol | 16 |
| Nifedipine Er Nifedipine | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Adult Health Clinical Nurse Specialist in IL →
All providers in Illinois →
Compare specialties →
Adult Health Clinical Nurse Specialist Overview
How Jocelyn Ko, APRN fits within the Adult Health Clinical Nurse Specialist landscape nationally.
1,379
Adult Health Clinical Nurse Specialist Providers in US
49
States with Adult Health Clinical Nurse Specialist
1,088
Avg Claims per Provider
Jocelyn Ko, APRN's 228 claims are below the specialty average of 1,088.
Nearby Adult Health Clinical Nurse Specialist Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Ko.
Dr. Kara Aalfs
A.P.N.
Saint Charles, IL
Dr. Christine Anderson
APRN
Rockford, IL
Dr. Katherine Anderson
APN
Chicago, IL
Dr. Ruth Arms
ACNS-BC
Peoria, IL
Dr. Jennifer Berkley
APN
Normal, IL
Compare Adult Health Clinical Nurse Specialist 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Adult Health Clinical Nurse Specialist 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 Jocelyn Ko, APRN's specialty? ▼
Jocelyn Ko, APRN specializes in Adult Health Clinical Nurse Specialist and practices in Chicago, Illinois. Credentials: APRN.
How much does Jocelyn Ko, APRN prescribe under Medicare Part D? ▼
In 2023, Jocelyn Ko, APRN wrote 228 Medicare Part D claims totaling $87K in drug costs for 51 beneficiaries.
What is Jocelyn Ko, APRN's Medicare quality score? ▼
Jocelyn Ko, APRN has a CMS MIPS Final Score of 87.1/100 (Quality: 70.8, Cost: 52.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Jocelyn Ko, APRN located? ▼
Jocelyn Ko, APRN is located at 820 S. WOOD ST, Chicago, IL, 60612. Phone: (847) 924-3756.
What is Jocelyn Ko, APRN's NPI number? ▼
Jocelyn Ko, APRN's National Provider Identifier (NPI) is 1679509327, issued on 06/24/2006.
Does Jocelyn Ko, APRN prescribe more brand-name or generic drugs? ▼
Jocelyn Ko, APRN's prescribing is 18% brand-name and 82% generic drugs by claim count, with $36K in brand drug costs.
How many Adult Health Clinical Nurse Specialist providers are there in the US? ▼
There are 1,379 Adult Health Clinical Nurse Specialist providers across 49 states in the US. The average Adult Health Clinical Nurse Specialist provider writes 1,088 Medicare Part D claims per year.
What drugs does Jocelyn Ko, APRN prescribe most often? ▼
Based on 2023 Medicare Part D data, Jocelyn Ko, APRN's most frequently prescribed drugs include Sevelamer Carbonate, Furosemide, Calcium Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jocelyn Ko, APRN accept Medicare? ▼
Jocelyn Ko, APRN appears in CMS Medicare data with 228 Part D claims and 51 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jocelyn Ko, APRN's credentials? ▼
Jocelyn Ko, APRN's NPI is 1679509327 with credentials APRN. 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.