Quick answers
- Does Ulka Zaleski accept Medicare assignment?
- Yes. Medicare's clinician data says Ulka Zaleski 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 Ulka Zaleski see?
- In 2024, CMS data shows 186 Original Medicare patients and 197 services for Ulka Zaleski. This counts Original Medicare only and measures volume, not quality.
- What is Ulka Zaleski's NPI number?
- 1689797292. 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 Ulka Zaleski, 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 | 186 |
|---|---|
| Services billed to Medicare | 197 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Anesthesia for lens surgery (00142)71 services
- Anesthesia for other procedure on urinary system through urethra (00910)21 services
- Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)17 services
- Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope (00918)12 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 blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes33%
- Ischemic heart disease27%
- Anxiety23%
Practice locations
Addresses where Ulka Zaleski is enrolled with Medicare (CMS data updated October 2, 2026).
- 400 W 7th StFrederick, MD 21701 (240) 566‑3800
- 9901 Medical Ctr DrRockville, MD 20850 (240) 826‑7324
Group practices
Medicare enrollment lists Ulka Zaleski as a member of this group (CMS data updated October 2, 2026).
- First Colonies Anesthesia Associates, LLC326 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Frederick
Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.
Other clinicians in First Colonies Anesthesia Associates, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689797292 |
| 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
- 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