Walter Mashman, MD
NPI 1639174840 · Cardiovascular Disease Physician · Atlanta, GA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Mashman, MD is a Cardiovascular Disease Physician provider in Atlanta, GA (NPI 1639174840).
Provider details
- NPI number
- 1639174840
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 032956 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,636 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 586 | $128 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 423 | $67 |
| Ultrasound of Heart, Follow-Up93308 | 72 | $24 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 48 | $78 |
| Blood Test, Clotting Time85610 | 47 | $4 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 513 | 162 |
| Metoprolol Succinate | 341 | 111 |
| Apixabanbrand: Eliquis | 266 | 69 |
| Amlodipine Besylate | 256 | 82 |
| Rosuvastatin Calcium | 220 | 76 |
| Losartan Potassium | 139 | 49 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-15
- Last updated
- 2010-09-15
Frequently asked questions
- What is Walter Mashman's NPI number?
- Walter Mashman's National Provider Identifier (NPI) is 1639174840, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Mashman's specialty?
- Walter Mashman is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Mashman located?
- Walter Mashman's practice location on file with NPPES is 275 Collier Rd Nw, Atlanta, GA 30309-1709.
- What is Walter Mashman's phone number?
- The practice phone number listed in the NPPES registry for Walter Mashman is (404) 605-2800.
- Does Walter Mashman accept Medicare?
- Walter Mashman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Mashman's NPI active?
- Yes — Walter Mashman's NPI (1639174840) is active in the NPPES registry as of the last update on 2010-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.