Matthew Grzywinski, MD
NPI 1619534658 · Emergency Medicine Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Grzywinski, MD is a Emergency Medicine Physician provider in Baltimore, MD (NPI 1619534658).
Provider details
- NPI number
- 1619534658
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD480180 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 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
416 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 182 | $177 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 111 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 79 | $121 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 17 | $72 |
| Critical Care, First 30-74 Minutes99291 | 14 | $216 |
| Ultrasound of Heart, Follow-Up93308 | 13 |
Practice location
Mailing address
Additional practice locations (2)
- 1500 East Medical Center DriveB1-380 Taubman CenterAnn Arbor, MI 48109Phone: (734) 763-7919Fax: (734) 936-9298
- 1020 Sansom St Ste 239Philadelphia, PA 19107-5002Phone: (215) 955-6844
Registry dates
- Enumerated
- 2019-05-24
- Last updated
- 2024-07-30
- Certified
- 2024-07-30
Frequently asked questions
- What is Matthew Grzywinski's NPI number?
- Matthew Grzywinski's National Provider Identifier (NPI) is 1619534658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Grzywinski's specialty?
- Matthew Grzywinski is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Grzywinski located?
- Matthew Grzywinski's practice location on file with NPPES is 301 Saint Paul St, Baltimore, MD 21202.
- What is Matthew Grzywinski's phone number?
- The practice phone number listed in the NPPES registry for Matthew Grzywinski is (410) 332-9477.
- Does Matthew Grzywinski accept Medicare?
- Matthew Grzywinski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Grzywinski's NPI active?
- Yes — Matthew Grzywinski's NPI (1619534658) is active in the NPPES registry as of the last update on 2024-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.