Dr. Walter Edward Mashman, MD
- Medicare services, 2024
- 1,636
- Medicare patients, 2024
- 1,047
- Part D claims, 2024
- 3,334
- MIPS score, 2024
- 92
- Hospital affiliations
- 3
- Practice address
- 275 Collier NW Rd, Atlanta, GA 30309
- Practice phone
- Call (404) 605-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Piedmont Heart Institute
Atlanta, Georgia
Find Dr. Mashman's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Walter Edward Mashman is a cardiologist in Atlanta, Georgia
Dr. Mashman practices at Piedmont Heart Institute in Atlanta, Georgia.
Dr. Mashman's NPI, 1639174840, was assigned on June 15, 2005. Dr. Mashman graduated from New York University School of Medicine in 1988. Dr. Mashman holds Georgia license 032956.
- NPI
- 1639174840NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981501137
- NPI enumeration date
- June 15, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (404) 605-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Walter Edward Mashman practices at Piedmont Heart Institute in Atlanta, Georgia
Dr. Mashman's primary practice is Piedmont Heart Institute, at 275 Collier NW Rd, Atlanta, GA 30309 in Fulton County. The practice phone is (404) 605-2800.
- Piedmont Heart Institute275 Collier NW Rd, Atlanta, GA 30309 · Fulton CountyPhone(404) 605-2800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Walter Edward Mashman is affiliated with 7 sites of care and 3 medical groups
Dr. Mashman's primary practice is Piedmont Heart Institute in Atlanta, Georgia. Dr. Mashman is also affiliated with Piedmont Atlanta. The medical group on file is Piedmont Heart Institute. Dmand AI also links Dr. Mashman to 2 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Walter Edward Mashman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mashman practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Piedmont Heart Institute | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Walter Edward Mashman is one of 665 cardiologists in Georgia
Cardiovascular disease is Dr. Mashman's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Mashman is licensed in Georgia.
Specialties and state licenses
- Cardiovascular disease, GeorgiaPrimary
Cardiologists near Dr. Mashman
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Walter Edward Mashman billed Medicare for 1,636 services in 2024
CMS data shows 1,636 Medicare services from Dr. Mashman across 22 procedure codes in 2024, for 1,047 Medicare patients. Medicare paid $103,235 for them.
Dr. Mashman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7212024: 81613%
- Tests and treatments
- 2023: 4102024: 73178%
- Lab and pathology
- 2023: 472024: 47No change
- Surgery
- 2023: 242024: 4275%
Where Dr. Mashman's Medicare services took place, 2024
- In an office78948%
- In a facility84752%
Dr. Mashman compared with the Georgia median for cardiologists, 2024
- Dr. Mashman
- Georgia median
- Medicare services
- 1,636vs 1,7547% below
- Medicare patients
- 1,047vs 73542% above
- Part D claims
- 3,172vs 2,46729% above
Medians across 637 cardiologists in Georgia with Dmand AI profiles that report each measure.
Dr. Mashman's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Walter Edward Mashman treated 1,047 Medicare patients in 2024, average age 76
CMS counts 1,047 Medicare patients who saw Dr. Mashman in 2024. The largest group is 75 to 84, with 440 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Mashman's median patient age at 63, with 48% women.
Dr. Mashman's Medicare patients by age, 2024
Dr. Mashman's Medicare patients by sex, 2024
- Women47645%
- Men57155%
Chronic conditions among Dr. Mashman's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease58%
- Arthritis47%
- Heart failure43%
- Chronic kidney disease42%
- Atrial fibrillation39%
- Diabetes35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mashman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women48%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Walter Edward Mashman wrote 3,334 Medicare Part D claims in 2024
In 2024, Dr. Mashman wrote 3,334 Medicare Part D claims for 529 patients. 87% of them were for generic drugs. CMS names the drug for 3,172 of them, across 40 drugs with 11 or more claims each, at $481,381 in total drug cost. In 2023, CMS named 2,495 claims across 39 drugs.
Dr. Mashman's Part D claims by kind of drug, 2024
- Generic2,900 claims87%
- Brand-name434 claims13%
Dr. Mashman's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mashman's Part D claims, 2024
- Antibiotics0%13 of 3,334 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,4952024: 3,17227%
Drugs named by CMS: 40 in 2024, 39 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Walter Edward Mashman scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Mashman for performance year 2024, reported through an alternative payment model (APM). Dr. Mashman accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mashman's MIPS scores, performance year 2024
- 92of 100Final score
- 83.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Walter Edward Mashman received $791 in industry payments from 2016 to 2025
CMS Open Payments shows 33 general payments to Dr. Mashman from 16 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Janssen Pharmaceuticals, Inc paid the most, $169.
General payments to Dr. Mashman by program year, 2016 to 2025
General payments to Dr. Mashman by kind, 2016 to 2025
- Food and beverage$71991%
- Education$729%
Companies that paid Dr. Mashman the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Walter Edward Mashman graduated from New York University School of Medicine
Dr. Mashman graduated from New York University School of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Walter Edward Mashman's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Walter Edward Mashman
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Walter Edward Mashman's NPI number?
Dr. Walter Edward Mashman's NPI number is 1639174840. It was assigned on June 15, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Walter Edward Mashman?
Dr. Walter Edward Mashman is a cardiologist in Atlanta, Georgia. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Walter Edward Mashman practice?
Dr. Mashman practices at 275 Collier NW Rd, Atlanta, GA 30309. Dr. Mashman's primary practice is Piedmont Heart Institute in Atlanta, Georgia. Dmand AI also links Dr. Mashman to 2 hospitals, 3 group practices and clinics and 2 medical groups.
What is Dr. Walter Edward Mashman's office phone number?
The practice phone on file for Dr. Mashman is (404) 605-2800.
What is Dr. Walter Edward Mashman's medical license number?
Dr. Mashman holds Georgia license 032956.
Which hospitals is Dr. Walter Edward Mashman affiliated with?
Dr. Mashman is affiliated with Piedmont Atlanta. Dmand AI links Dr. Mashman to 2 more hospitals.
What medical group is Dr. Walter Edward Mashman part of?
Dr. Mashman is linked to Piedmont Heart Institute. Dmand AI links Dr. Mashman to 2 more medical groups.
Does Dr. Walter Edward Mashman accept Medicare?
Yes. CMS data shows Dr. Mashman billed Medicare for 1,636 services in 2024, and Dr. Mashman accepts Medicare assignment.
What is Dr. Walter Edward Mashman's MIPS score?
Dr. Mashman's MIPS final score for performance year 2024 is 92 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Walter Edward Mashman see?
CMS counts 1,047 Medicare patients who saw Dr. Mashman in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Walter Edward Mashman bill to Medicare?
In 2024, Dr. Mashman's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93306) and heart test or procedure (93308).
Where did Dr. Walter Edward Mashman go to medical school?
Dr. Mashman graduated from New York University School of Medicine in 1988.
What drugs does Dr. Walter Edward Mashman prescribe most?
In 2024 Medicare Part D data, Dr. Mashman's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Eliquis.
Has Dr. Walter Edward Mashman received payments from drug or device companies?
CMS Open Payments shows $791 in general payments to Dr. Mashman from 16 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Walter Edward Mashman been practicing?
Dr. Mashman graduated from medical school in 1988, 38 years ago.
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