Quick answers
- Does Katherine L. Maietta accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine L. Maietta accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Katherine L. Maietta see?
- In 2024, CMS data shows 119 Original Medicare patients and 435 services for Katherine L. Maietta. This counts Original Medicare only and measures volume, not quality.
- What is Katherine L. Maietta's NPI number?
- 1275799710. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Katherine L. Maietta, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 119 |
|---|---|
| Services billed to Medicare | 435 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)103 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)79 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)36 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)32 services
- Admn sarscov2 vacc 1 dose (90480)19 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure60%
- Arthritis49%
- Anxiety30%
- Depression25%
- Ischemic heart disease21%
Hospitals where Katherine L. Maietta works
Medicare's Facility Affiliation Data lists Katherine L. Maietta at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Loyola University Medical CenterMaywood, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140276
- Rush Oak Park HospitalOak Park, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140063
- Rush University Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140119
- West Suburban Medical CenterOak Park, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: not listed by Medicare · CCN 140049
Practice locations
Addresses where Katherine L. Maietta is enrolled with Medicare (CMS data updated October 2, 2026).
- 1010 Lake St, Suite 301Oak Park, IL 60301 (708) 524‑8600
Group practices
Medicare enrollment lists Katherine L. Maietta as a member of this group (CMS data updated October 2, 2026).
- Lake Street Family Physicians SC Inc6 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Oak Park
Clinicians with the same Medicare primary specialty in Oak Park, IL — not a recommendation.
Other clinicians in Lake Street Family Physicians SC Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Pennsylvania State University College Of Medicine |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1275799710 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians