DR. KATHERINE MALCZEWSKI M.D.
NPI 1598008989
Obstetrics & Gynecology in Silver Spring, MD
About Dr. Katherine Malczewski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KATHERINE MALCZEWSKI M.D. (NPI 1598008989) is an individual obstetrics & gynecology provider in Silver Spring, Maryland, licensed in Maryland (D0100831) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS and is a graduate of University Of Pittsburgh School Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Katherine Malczewski M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Katherine Malczewski reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia enrollment
- 34 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1891797148 (Maryland)
- 861 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Obhg California PC
- 711 clinicians in this Medicare group
Jackson, MS 39202
- Reassigned Medicare billing, Mississippi enrollment
- Medicare enrollment name: Obhg Mississippi PC
- 145 clinicians in this Medicare group
Campbell, CA 95008
- Reassigned Medicare billing, California enrollment
- 59 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20904 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SILVER SPRING, MD 20904
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Katherine Malczewski's NPI number?
The NPI number for Katherine Malczewski is 1598008989. It was assigned to this individual provider in the NPPES registry on April 3, 2013.
Where is Katherine Malczewski located?
Katherine Malczewski practices at 11890 Healing Way, Silver Spring, MD 20904. The listed phone number is (240) 637-4000.
What is Katherine Malczewski's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Katherine Malczewski enrolled in Medicare?
Yes. Katherine Malczewski is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Katherine Malczewski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Malczewski reassigns Medicare benefits to 6 organizations: Medstar Medical Group II LLC (Washington, DC), Pediatrix Medical Group Of The Mid-Atlantic PC (Rockville, MD), Mgmc LLC (Washington, DC), Obhg California, P.C. (Greenville, SC), Obhg Mississippi, P.C. (Jackson, MS) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Malczewski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Katherine Malczewski was last updated on June 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Katherine Malczewski, M.D. · NPI 1598008989
Obstetrics & Gynecology physician in Silver Spring, Maryland. Individual provider, active in the CMS NPPES registry since April 3, 2013.
## Identity
- **NPI:** 1598008989 (Entity type: Individual)
- **Enumerated:** April 3, 2013
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** D0100831 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 11890 HEALING WAY, Silver Spring, MD 20904-7917
- **Phone:** (240) 637-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1023836137, Washington, DC); Pediatrix Medical Group Of The Mid-Atlantic PC (NPI 1205859691, Rockville, MD); Mgmc LLC (NPI 1316949654, Washington, DC); Obhg California, P.C. (NPI 1215258892, Greenville, SC); Obhg Mississippi, P.C. (NPI 1083995674, Jackson, MS); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** June 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1598008989) · Data from the CMS NPPES public registry.