Helen Prevas, M.D.
NPI 1720380330 · Internal Medicine Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Prevas, M.D. is a Internal Medicine Physician provider in Baltimore, MD (NPI 1720380330).
Provider details
- NPI number
- 1720380330
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 9249 (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
15 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
239 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 99 | $217 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 36 | $14 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 30 | $44 |
| Emergent Insertion of Breathing Tube Into Windpipe Using an Endoscope31500 | 21 | $144 |
| Insertion of Non-Tunneled Central Venous Tube for Infusion (5 Years Or Older)36556 | 20 | $86 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 20 | $121 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-12-02
- Last updated
- 2012-03-23
Frequently asked questions
- What is Helen Prevas's NPI number?
- Helen Prevas's National Provider Identifier (NPI) is 1720380330, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Prevas's specialty?
- Helen Prevas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Prevas located?
- Helen Prevas's practice location on file with NPPES is 600 N Wolfe St, Baltimore, MD 21287-0005.
- What is Helen Prevas's phone number?
- The practice phone number listed in the NPPES registry for Helen Prevas is (410) 955-7911.
- Does Helen Prevas accept Medicare?
- Helen Prevas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Prevas's NPI active?
- Yes — Helen Prevas's NPI (1720380330) is active in the NPPES registry as of the last update on 2012-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.