KATHERINE GRUBER WAFER CRNP
NPI 1164617379
Nurse Practitioner - Family in Hagerstown, MD
About Katherine Gruber Wafer Crnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE GRUBER WAFER CRNP (NPI 1164617379) is an individual family provider in Hagerstown, Maryland, licensed in Maryland (R164999) and active in the NPI registry since September 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Hagerstown, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Katherine Gruber Wafer Crnp 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
9Medicare enrollment records show Katherine Wafer reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hagerstown, MD 21740
- Reassigned Medicare billing, Maryland enrollment
- 101 clinicians in this Medicare group
Hagerstown, MD 21740
- Reassigned Medicare billing, Maryland enrollment
- 21 clinicians in this Medicare group
Hagerstown, MD 21742
- Reassigned Medicare billing, Maryland enrollment
- 91 clinicians in this Medicare group
Reisterstown, MD 21136
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 105 clinicians in this Medicare group
Gwynn Oak, MD 21207
- Reassigned Medicare billing, Maryland enrollment
- 52 clinicians in this Medicare group
Largo, MD 20774
- Reassigned Medicare billing, District of Columbia enrollment
- 81 clinicians in this Medicare group
Annapolis, MD 21401
- Reassigned Medicare billing, Maryland enrollment
- 73 clinicians in this Medicare group
Prince Frederick, MD 20678
- Reassigned Medicare billing, Maryland enrollment
- 71 clinicians in this Medicare group
Blue Ash, OH 45242
- Reassigned Medicare billing, District of Columbia, Indiana, Maryland, Virginia and West Virginia enrollments
- 45 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21740 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 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
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 Wafer's NPI number?
The NPI number for Katherine Wafer is 1164617379. It was assigned to this individual provider in the NPPES registry on September 11, 2007.
Where is Katherine Wafer located?
Katherine Wafer practices at 201 S Cleveland Ave, Hagerstown, MD 21740. The listed phone number is (301) 745-3777.
What is Katherine Wafer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Katherine Wafer enrolled in Medicare?
Yes. Katherine Wafer 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 Wafer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Wafer reassigns Medicare benefits to 9 organizations: Synergy Medical Group LLC (Hagerstown, MD), Walnut Street Community Health Center, Inc. (Hagerstown, MD), Mdics At Meritus Medical Center, LLC (Hagerstown, MD), Crh MD Management LLC (Reisterstown, MD), Mdics At Umroi, LLC (Gwynn Oak, MD) and 4 more organizations, 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 Wafer'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 Wafer was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.
# Katherine Gruber Wafer, CRNP · NPI 1164617379
Family physician in Hagerstown, Maryland. Individual provider, active in the CMS NPPES registry since September 11, 2007.
## Identity
- **NPI:** 1164617379 (Entity type: Individual)
- **Enumerated:** September 11, 2007
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** R164999 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 201 S CLEVELAND AVE, Hagerstown, MD 21740-5745
- **Phone:** (301) 745-3777
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Synergy Medical Group LLC (NPI 1881564979, Hagerstown, MD); Walnut Street Community Health Center, Inc. (NPI 1366425266, Hagerstown, MD); Mdics At Meritus Medical Center, LLC (NPI 1306258645, Hagerstown, MD); Crh MD Management LLC (NPI 1598435059, Reisterstown, MD); Mdics At Umroi, LLC (NPI 1588023667, Gwynn Oak, MD); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** March 4, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1164617379) · Data from the CMS NPPES public registry.