DR. WALTER EDWARD MASHMAN MD
NPI 1639174840
Internal Medicine - Cardiovascular Disease in Atlanta, GA
About Dr. Walter Edward Mashman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WALTER EDWARD MASHMAN MD (NPI 1639174840) is an individual cardiovascular disease provider in Atlanta, Georgia, licensed in Georgia (032956) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Piedmont Hospital, and is a graduate of New York University School Of Medicine (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
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. Walter Edward Mashman Md 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
3Medicare enrollment records show Walter Mashman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Atlanta, GA 30309
- Reassigned Medicare billing, Georgia enrollment
- 539 clinicians in this Medicare group
Stockbridge, GA 30281
- Reassigned Medicare billing, Georgia enrollment
- 565 clinicians in this Medicare group
Athens, GA 30606
- Reassigned Medicare billing, Georgia enrollment
- 140 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 22
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Piedmont Hospital
Acute Care Hospitals · Atlanta, GAPiedmont Henry Hospital
Acute Care Hospitals · Stockbridge, GAPiedmont Eastside Medical Center
Acute Care Hospitals · Snellville, GAPiedmont Fayette Hospital
Acute Care Hospitals · Fayetteville, GAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30309 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
ATLANTA, GA 30309
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 Walter Mashman's NPI number?
The NPI number for Walter Mashman is 1639174840. It was assigned to this individual provider in the NPPES registry on June 15, 2005.
Where is Walter Mashman located?
Walter Mashman practices at 275 Collier Rd NW Ste 300, Atlanta, GA 30309. The listed phone number is (404) 605-2800.
What is Walter Mashman's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Walter Mashman enrolled in Medicare?
Yes. Walter Mashman 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 Walter Mashman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Walter Mashman reassigns Medicare benefits to 3 organizations: Piedmont Cardiology Of Atlanta, LLC (Atlanta, GA), Piedmont Professional Services, LLC (Stockbridge, GA) and Piedmont Athens Specialty Care LLC (Athens, GA). 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 Walter Mashman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Walter Mashman accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama and Ambetter of North Carolina and 2 other insurers list Walter Mashman as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Walter Mashman affiliated with any hospitals?
According to CMS data, Walter Mashman is affiliated with Piedmont Hospital, Piedmont Henry Hospital, Piedmont Eastside Medical Center and Piedmont Fayette Hospital.
When was this NPI record last updated?
The NPPES record for Walter Mashman was last updated on September 15, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Walter Edward Mashman, MD · NPI 1639174840
Cardiovascular Disease physician in Atlanta, Georgia. Individual provider, active in the CMS NPPES registry since June 15, 2005.
## Identity
- **NPI:** 1639174840 (Entity type: Individual)
- **Enumerated:** June 15, 2005
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 032956 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 275 COLLIER RD NW, STE 300, Atlanta, GA 30309-1709
- **Phone:** (404) 605-2800 · **Fax:** (404) 251-5983
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Piedmont Cardiology Of Atlanta, LLC (NPI 1275729691, Atlanta, GA); Piedmont Professional Services, LLC (NPI 1104088905, Stockbridge, GA); Piedmont Athens Specialty Care LLC (NPI 1184130627, Athens, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York University School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** September 15, 2010
- **Other identifiers:** Medicaid 000546499QRT (GA); Medicare PIN 202I061119 (GA); Medicare UPIN F55632
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Source: [NPI Profile](https://npiprofile.com/npi/1639174840) · Data from the CMS NPPES public registry.