Ian Ciesielski, MD, MS
NPI 1891324497 · Emergency Medicine Physician · Hershey, PA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Ciesielski, MD, MS is a Emergency Medicine Physician provider in Hershey, PA (NPI 1891324497).
Provider details
- NPI number
- 1891324497
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MS
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD485294 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
95 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 60 | $177 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 23 | $122 |
| Critical Care, First 30-74 Minutes99291 | 12 | $215 |
Typical Medicare-allowed amounts for these services range $122–$215 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 3400 Spruce StPhiladelphia, PA 19104-4238Phone: (215) 662-4000
Registry dates
- Enumerated
- 2020-04-06
- Last updated
- 2026-04-30
- Certified
- 2026-04-30
Frequently asked questions
- What is Ian Ciesielski's NPI number?
- Ian Ciesielski's National Provider Identifier (NPI) is 1891324497, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Ciesielski's specialty?
- Ian Ciesielski is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Ciesielski located?
- Ian Ciesielski's practice location on file with NPPES is 500 University Dr, Hershey, PA 17033-2360.
- What is Ian Ciesielski's phone number?
- The practice phone number listed in the NPPES registry for Ian Ciesielski is (800) 243-1455.
- Does Ian Ciesielski accept Medicare?
- Ian Ciesielski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Ciesielski's NPI active?
- Yes — Ian Ciesielski's NPI (1891324497) is active in the NPPES registry as of the last update on 2026-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.