Stephen Macenas
NPI 1871133538 · Physician Assistant · Chicago, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Macenas is a Physician Assistant provider in Chicago, IL (NPI 1871133538).
Provider details
- NPI number
- 1871133538
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 61168 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 76 | 67 |
| Diazepam | 43 | 40 |
| Solifenacin Succinate | 38 | 14 |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 30 | — |
| Tamsulosin Hcl | 26 | 16 |
| Ciprofloxacin Hcl | 22 | 22 |
| Estradiol | 21 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,208 across 27 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-01-10
- Last updated
- 2023-06-23
- Certified
- 2023-06-23
Frequently asked questions
- What is Stephen Macenas's NPI number?
- Stephen Macenas's National Provider Identifier (NPI) is 1871133538, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Macenas's specialty?
- Stephen Macenas is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Macenas located?
- Stephen Macenas's practice location on file with NPPES is 1702 N Milwaukee Ave, Chicago, IL 60647-5424.
- What is Stephen Macenas's phone number?
- The practice phone number listed in the NPPES registry for Stephen Macenas is (630) 207-7476.
- Does Stephen Macenas accept Medicare?
- Stephen Macenas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Macenas's NPI active?
- Yes — Stephen Macenas's NPI (1871133538) is active in the NPPES registry as of the last update on 2023-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.