William Thompson, M.D.
NPI 1326073131 · Pediatric Cardiology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Thompson, M.D. is a Pediatric Cardiology Physician provider in Baltimore, MD (NPI 1326073131).
Provider details
- NPI number
- 1326073131
- Entity type
- Individual
- Primary specialty
- Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D33463 (MD)
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
19 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
43 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) |
|---|---|---|
| Ultrasound of Heart for Congenital Defect93303 | 15 | $58 |
| Ultrasound of Heart Blood Flow, Valves and Chambers93320 | 14 | $17 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 14 | $3 |
Typical Medicare-allowed amounts for these services range $3–$58 (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)
- 8600 Old Georgetown RdBethesda, MD 20814-1422Phone: (301) 896-2578
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2023-01-17
- Certified
- 2023-01-17
Frequently asked questions
- What is William Thompson's NPI number?
- William Thompson's National Provider Identifier (NPI) is 1326073131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Thompson's specialty?
- William Thompson is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Thompson located?
- William Thompson's practice location on file with NPPES is 601 N Caroline St, Baltimore, MD 21287-0006.
- What is William Thompson's phone number?
- The practice phone number listed in the NPPES registry for William Thompson is (410) 955-5910.
- Does William Thompson accept Medicare?
- William Thompson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Thompson's NPI active?
- Yes — William Thompson's NPI (1326073131) is active in the NPPES registry as of the last update on 2023-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.