Mia Waliszewski, MD
Obstetrics & Gynecology · Washington, DC
At a glance
2121 L St Nw Ste 700, Washington, DC 20037-1524
NPPES record updated Jul 21, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
2121 L St Nw Ste 700Washington, DC 20037-1524
Additional reported practice locations
169 Ashley Ave.Room 202 Main Hospital Msc333
Charleston, SC 29425
Phone: 8437923072
Education & affiliations
- Medical / professional school
- University Of Virginia School Of Medicine
- Graduation year
- 2020
- CMS specialties
- Obstetrics/Gynecology
Practice groups
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $189.03 |
Reporting companies
| Company | Amount |
|---|---|
| VERTEX PHARMACEUTICALS INCORPORATED | $120.36 |
| SUMITOMO PHARMA AMERICA, INC. | $24.44 |
| SEQIRUS USA INC | $15.75 |
| SUPERNUS PHARMACEUTICALS, INC. | $14.24 |
| SAGE THERAPEUTICS, LLC | $14.24 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Obstetrics & Gynecology
- Taxonomy code
- 207V00000X
- Enumeration date
- Jun 15, 2020
- Record updated
- Jul 21, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
208600000X
License reported: LL84448 SC
207V00000X · Primary
License reported: MD60004299 DC
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
2121 L St Nw Ste 700Washington, DC 20037-1524
- Phone
- (202) 331-9293
- Fax
- (410) 584-1739
Mailing address
5801 POSTAL RD UNIT 81310CLEVELAND, OH 441812112
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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