NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1689172835 PA-C
Verify on CMS → Carolina Ayala, PA-C
Physician Assistant 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 150,974 in 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
2K
Medicare Part D claims · 153 beneficiaries · Physician Assistant avg: 790
Generic prescribing
77%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Carolina Ayala, PA-C filed 1,943 Medicare Part D claims in 2023 as a Physician Assistant in Chicago, Illinois, prescribing 77% generic.
- 2K
- Part D claims, 2023
- 77%
- generic prescribing
- ≥84th
- 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 Carolina Ayala, PA-C
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 1689172835), first enumerated 01/23/2018.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,943 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Carolina Ayala, PA-C'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 1689172835 · Physician Assistant
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1689172835
- ENUM-RECENT 2018
- TAX-MEGA 151K Physician Assistant
- RX-MID 1,943
- BOOK-LIGHT 4,416 in Illinois
- PHOTO-ENUM Tyler Dial · 2018
Carolina Ayala, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,943 ≥ 84th percentile 84% of 1,370,886 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 · 2023
What does the federal data show about Carolina Ayala, PA-C?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
1,943 146% vs specialty avg
Specialty distribution in Illinois
How 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 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 | 1689172835 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA-C |
| Gender | Female |
| NPI Issued | 01/23/2018 |
Hospital and facility affiliations
Facilities where Carolina Ayala, PA-C 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.
Access Community Health Network
Chicago, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Carolina Ayala, PA-C. To verify Carolina Ayala, PA-C'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
Carolina Ayala, PA-C - brand share 20.0%
Physician Assistant average
20% brand-name claims vs 77% generic, on 1,943 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.
1,943
Total Claims
$428K
Total Drug Cost
153
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,864
- Total Day Supply
- 143,587
- Brand vs Generic
- 20% brand / 77% generic
- Brand Drug Cost
- $393K
- Generic Drug Cost
- $32K
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 69.4 years
- Avg HCC Risk Score
- 1.08
- Gender Split
- 71% female / 29% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Carolina Ayala, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
218 claims
- Metformin Hcl
Metformin Hcl
152 claims
- Levothyroxine Sodium
Levothyroxine Sodium
91 claims
- Lisinopril 85
Lisinopril
85 claims
- Losartan Potassium 84
Losartan Potassium
84 claims
- Amlodipine Besylate 71
Amlodipine Besylate
71 claims
- Januvia 59
Januvia
59 claims
- Hydrochlorothiazide 57
Hydrochlorothiazide
57 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 218 |
| Metformin Hcl | 152 |
| Levothyroxine Sodium | 91 |
| Lisinopril | 85 |
| Losartan Potassium | 84 |
| Amlodipine Besylate | 71 |
| Januvia Sitagliptin Phosphate | 59 |
| Hydrochlorothiazide | 57 |
| Rosuvastatin Calcium | 56 |
| Trulicity Dulaglutide | 50 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Carolina Ayala, PA-C fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Carolina Ayala, PA-C's 1,943 claims are above the specialty average of 790.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Ayala, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Ayala.
One of 4,416 Physician Assistant providers enrolled in Illinois, 5 are shown here.
Dr. Brooke Aarhus
PA-C
Park Ridge, IL
Dr. Traci Aaron
PA-C
Chicago, IL
Dr. Sana Abbasi
PA
Carol Stream, IL
Dr. Susan Abbinanti
PA-C
Elk Grove Village, IL
Dr. Katheryn Abbott
PA
Schaumburg, IL
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Carolina Ayala, PA-C's specialty? ▼
Carolina Ayala, PA-C specializes in Physician Assistant and practices in Chicago, Illinois. Credentials: PA-C.
How much does Carolina Ayala, PA-C prescribe under Medicare Part D? ▼
In 2023, Carolina Ayala, PA-C wrote 1,943 Medicare Part D claims totaling $428K in drug costs for 153 beneficiaries.
Where is Carolina Ayala, PA-C located? ▼
Carolina Ayala, PA-C is located at 3303 W 26TH ST, Chicago, IL, 60623. Phone: (480) 252-8331.
What is Carolina Ayala, PA-C's NPI number? ▼
Carolina Ayala, PA-C's National Provider Identifier (NPI) is 1689172835, issued on 01/23/2018.
Does Carolina Ayala, PA-C prescribe more brand-name or generic drugs? ▼
Carolina Ayala, PA-C's prescribing is 20% brand-name and 77% generic drugs by claim count, with $393K in brand drug costs.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Carolina Ayala, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Carolina Ayala, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Metformin Hcl, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carolina Ayala, PA-C accept Medicare? ▼
Carolina Ayala, PA-C appears in CMS Medicare data with 1,943 Part D claims and 153 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carolina Ayala, PA-C's credentials? ▼
Carolina Ayala, PA-C's NPI is 1689172835 with credentials PA-C. 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.
- 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
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.