Sean Wrenn, M.D.
NPI 1831431261 · Surgical Oncology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Wrenn, M.D. is a Surgical Oncology Physician provider in Chicago, IL (NPI 1831431261).
Provider details
- NPI number
- 1831431261
- Entity type
- Individual
- Primary specialty
- Surgical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 278947 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
398 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) |
|---|---|---|
| Ultrasonic Guidance During Surgery76998 | 48 | $51 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 39 | $139 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 36 | $100 |
| Fine Needle Aspiration Biopsy Using Ultrasound Guidance, First Growth10005 | 31 | $77 |
| Removal Or Exploration of Parathyroid Glands60500 | 26 | $1,072 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 58 | 12 |
| Alprazolam | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 55 Fruit St # 5-506Boston, MA 02114-2696Phone: (617) 726-7712
- 111 Colchester AveMailstop 201fl3Burlington, VT 05401-1473Phone: (802) 847-2700
Registry dates
- Enumerated
- 2013-03-24
- Last updated
- 2022-04-05
- Certified
- 2022-04-05
Frequently asked questions
- What is Sean Wrenn's NPI number?
- Sean Wrenn's National Provider Identifier (NPI) is 1831431261, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Wrenn's specialty?
- Sean Wrenn is listed in the NPPES registry with a primary specialty of Surgical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Sean Wrenn located?
- Sean Wrenn's practice location on file with NPPES is 1725 W Harrison St Ste 250, Chicago, IL 60612-3861.
- What is Sean Wrenn's phone number?
- The practice phone number listed in the NPPES registry for Sean Wrenn is (312) 942-5500.
- Does Sean Wrenn accept Medicare?
- Sean Wrenn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Wrenn's NPI active?
- Yes — Sean Wrenn's NPI (1831431261) is active in the NPPES registry as of the last update on 2022-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.