MARY KRAMER
NPI 1821017757
Internal Medicine in Charlotte Hall, MD
About Mary Kramer NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KRAMER (NPI 1821017757) is an individual internal medicine provider in Charlotte Hall, Maryland, licensed in Maryland (D0022102) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Kramer is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Kramer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hollywood, MD 20636
- Reassigned Medicare billing, Maryland enrollment
- 307 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 20622 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 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mary Kramer's NPI number?
The NPI number for Mary Kramer is 1821017757. It was assigned to this individual provider in the NPPES registry on July 19, 2006.
Where is Mary Kramer located?
Mary Kramer practices at 37767 Market Dr, Charlotte Hall, MD 20622. The listed phone number is (301) 884-7322.
What is Mary Kramer's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mary Kramer enrolled in Medicare?
Yes. Mary Kramer is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Kramer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Kramer reassigns Medicare benefits to Medstar Medical Group - Southern Maryland LLC (Hollywood, MD). The 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 Mary Kramer'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 Mary Kramer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Mary Kramer · NPI 1821017757
Internal Medicine physician in Charlotte Hall, Maryland. Individual provider, active in the CMS NPPES registry since July 19, 2006.
## Identity
- **NPI:** 1821017757 (Entity type: Individual)
- **Enumerated:** July 19, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D0022102 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 37767 MARKET DR, Charlotte Hall, MD 20622-3188
- **Phone:** (301) 884-7322 · **Fax:** (301) 884-8663
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Medstar Medical Group - Southern Maryland LLC (NPI 1831592211, Hollywood, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare UPIN D74681 (MD); Medicare ID-Type Unspecified H888JM30 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1821017757) · Data from the CMS NPPES public registry.