Kathleen Nilles, MD
NPI 1396903928 · Transplant Hepatology Physician · Washington, DC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathleen Nilles, MD is a Transplant Hepatology Physician provider in Washington, DC (NPI 1396903928).
Provider details
- NPI number
- 1396903928
- Entity type
- Individual
- Primary specialty
- Transplant Hepatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036128000 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
310 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 121 | $125 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 88 | $197 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 67 | $141 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 21 | $184 |
| Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235 | 13 | $122 |
Typical Medicare-allowed amounts for these services range $122–$197 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tacrolimus | 88 | 19 |
| Tenofovir Alafenamidebrand: Vemlidy | 44 | — |
| Pantoprazole Sodium | 39 | — |
| Furosemide | 32 | — |
| Spironolactone | 29 | — |
| Ursodiol | 22 | — |
| Entecavir | 21 | — |
| Mycophenolate Mofetil |
Practice location
Mailing address
Additional practice locations (2)
- 251 E Huron StFeinberg 16-738Chicago, IL 60611-2908Phone: (312) 926-5924
- 251 E Huron StFeinberg 16-738Chicago, IL 60611-2908Phone: (312) 926-5924
Registry dates
- Enumerated
- 2008-05-30
- Last updated
- 2019-09-04
Frequently asked questions
- What is Kathleen Nilles's NPI number?
- Kathleen Nilles's National Provider Identifier (NPI) is 1396903928, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Nilles's specialty?
- Kathleen Nilles is listed in the NPPES registry with a primary specialty of Transplant Hepatology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathleen Nilles located?
- Kathleen Nilles's practice location on file with NPPES is 3800 Reservoir Rd Nw, Washington, DC 20007.
- What is Kathleen Nilles's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Nilles is (202) 444-3700.
- Does Kathleen Nilles accept Medicare?
- Kathleen Nilles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathleen Nilles's NPI active?
- Yes — Kathleen Nilles's NPI (1396903928) is active in the NPPES registry as of the last update on 2019-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.