William Merwin, M.D.
NPI 1043697600 · Student in an Organized Health Care Education/Training Program · Baltimore, MD
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Merwin, M.D. is a Student in an Organized Health Care Education/Training Program provider in Baltimore, MD (NPI 1043697600).
Provider details
- NPI number
- 1043697600
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0091613 (MD)
Specialties & taxonomies
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 59 | — |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 36 | — |
| Prednisone | 24 | 12 |
| Budesonide/Formoterol Fumaratebrand: Symbicort | 22 | — |
| Montelukast Sodium | 15 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 14 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-05-04
- Last updated
- 2025-06-11
- Certified
- 2025-06-11
Frequently asked questions
- What is William Merwin's NPI number?
- William Merwin's National Provider Identifier (NPI) is 1043697600, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Merwin's specialty?
- William Merwin is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is William Merwin located?
- William Merwin's practice location on file with NPPES is 201 E University Pkwy Dept of, Baltimore, MD 21218.
- What is William Merwin's phone number?
- The practice phone number listed in the NPPES registry for William Merwin is (410) 554-2284.
- Does William Merwin accept Medicare?
- William Merwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Merwin's NPI active?
- Yes — William Merwin's NPI (1043697600) is active in the NPPES registry as of the last update on 2025-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.