William Karkowsky, M.D.
NPI 1053675074 · Critical Care Medicine (Internal Medicine) Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Karkowsky, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in Baltimore, MD (NPI 1053675074).
Provider details
- NPI number
- 1053675074
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0084609 (MD)
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
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
793 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 35 Minutes99232 | 159 | $80 |
| Critical Care, First 30-74 Minutes99291 | 140 | $217 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 114 | $187 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 54 | $121 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 53 | $60 |
| Test to Determine Lung Volumes Using Gas Dilution Or Washout94727 | 51 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 229 | 39 |
| Montelukast Sodium | 105 | 30 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 81 | 25 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 55 | — |
| Umeclidinium Bromidebrand: Incruse Ellipta | 49 | — |
| Prednisone | 48 | 29 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-25
- Last updated
- 2020-01-24
- Certified
- 2020-01-24
Frequently asked questions
- What is William Karkowsky's NPI number?
- William Karkowsky's National Provider Identifier (NPI) is 1053675074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Karkowsky's specialty?
- William Karkowsky is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is William Karkowsky located?
- William Karkowsky's practice location on file with NPPES is 6503 Sanzo Rd Apt F, Baltimore, MD 21209-2412.
- What is William Karkowsky's phone number?
- The practice phone number listed in the NPPES registry for William Karkowsky is (301) 787-9327.
- Does William Karkowsky accept Medicare?
- William Karkowsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Karkowsky's NPI active?
- Yes — William Karkowsky's NPI (1053675074) is active in the NPPES registry as of the last update on 2020-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.