Dr. Guillermo Alfredo Walters, MD
- Medicare services, 2024
- 1,449
- Medicare patients, 2024
- 1,308
- Part D claims, 2024
- 26
- MIPS score, 2024
- 100
- Hospital affiliations
- 5
- Practice address
- 60 Hospital Road, Leominster, MA 01453
- Practice phone
- Call (978) 466-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Walters' professional email, personal email and mobile number
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Dr. Guillermo Alfredo Walters is a diagnostic radiologist in Leominster, Massachusetts
Dr. Walters practices at UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts, part of UMass Memorial Health Care.
Dr. Walters' NPI, 1558351494, was assigned on October 23, 2005. Dr. Walters graduated from State University of New York at Buffalo School of Medicine in 1988. Dr. Walters holds Massachusetts license 74668.
- NPI
- 1558351494NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921030339
- NPI enumeration date
- October 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 466-2000
- 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 Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Guillermo Alfredo Walters practices at UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts
Dr. Walters' primary practice is UMass Memorial Health - HealthAlliance-Clinton Hospital, at 60 Hospital Road, Leominster, MA 01453 in Worcester County. The practice phone is (978) 466-2000.
- UMass Memorial Health - HealthAlliance-Clinton Hospital60 Hospital Road, Leominster, MA 01453 · Worcester CountyPhone(978) 466-2000
Source: Dmand AI Affiliation Data
Dr. Guillermo Alfredo Walters is affiliated with 5 sites of care and 2 medical groups
Dr. Walters' primary practice is UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts, part of UMass Memorial Health Care. Dr. Walters is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Walters to 3 more hospitals and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Guillermo Alfredo Walters' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walters practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UMass Memorial Health - HealthAlliance-Clinton Hospital | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Guillermo Alfredo Walters is one of 1,246 diagnostic radiologists in Massachusetts
Diagnostic radiology is Dr. Walters' primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Walters is licensed in Massachusetts.
Specialties and state licenses
- Diagnostic radiology, MassachusettsPrimary
Diagnostic radiologists near Dr. Walters
Counts of diagnostic radiologists 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. Guillermo Alfredo Walters billed Medicare for 1,449 services in 2024
CMS data shows 1,449 Medicare services from Dr. Walters across 29 procedure codes in 2024, for 1,308 Medicare patients. Medicare paid $54,114 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Walters' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,1542024: 1,2266%
- Tests and treatments
- 2023: 1162024: 14525%
- Surgery
- 2023: 972024: 7820%
Dr. Walters compared with the Massachusetts median for diagnostic radiologists, 2024
- Dr. Walters
- Massachusetts median
- Medicare services
- 1,449vs 2,24235% below
- Medicare patients
- 1,308vs 1,57117% below
Medians across 1,108 diagnostic radiologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Walters' 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. Guillermo Alfredo Walters treated 1,308 Medicare patients in 2024, average age 72
CMS counts 1,308 Medicare patients who saw Dr. Walters in 2024. The largest group is 65 to 74, with 520 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Walters' median patient age at 66, with 52% women.
Dr. Walters' Medicare patients by age, 2024
Dr. Walters' Medicare patients by sex, 2024
- Women76959%
- Men53941%
Chronic conditions among Dr. Walters' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Mood disorders40%
- Anxiety38%
- Depression36%
- Diabetes32%
- Chronic kidney disease31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Walters' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Guillermo Alfredo Walters wrote 26 Medicare Part D claims in 2024
In 2024, Dr. Walters wrote 26 Medicare Part D claims. 88% of them were for generic drugs.
Dr. Walters' Part D claims by kind of drug, 2024
- Generic23 claims88%
- Brand-name and other3 claims12%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Guillermo Alfredo Walters scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Walters for performance year 2024, reported through an alternative payment model (APM). Dr. Walters accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Walters' MIPS scores, performance year 2024
- 100of 100Final score
- 83of 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. Guillermo Alfredo Walters graduated from State University of New York at Buffalo School of Medicine
Dr. Walters graduated from State University of New York at Buffalo School of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Guillermo Alfredo Walters'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 (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) |
| 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. Guillermo Alfredo Walters
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. Guillermo Alfredo Walters' NPI number?
Dr. Guillermo Alfredo Walters' NPI number is 1558351494. It was assigned on October 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Guillermo Alfredo Walters?
Dr. Guillermo Alfredo Walters is a diagnostic radiologist in Leominster, Massachusetts. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Guillermo Alfredo Walters practice?
Dr. Walters practices at 60 Hospital Road, Leominster, MA 01453. Dr. Walters' primary practice is UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts, part of UMass Memorial Health Care. Dmand AI also links Dr. Walters to 3 hospitals and 1 medical group.
What is Dr. Guillermo Alfredo Walters' office phone number?
The practice phone on file for Dr. Walters is (978) 466-2000.
What is Dr. Guillermo Alfredo Walters' medical license number?
Dr. Walters holds Massachusetts license 74668.
Which hospitals is Dr. Guillermo Alfredo Walters affiliated with?
Dr. Walters practices at UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts. Dr. Walters is also affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Walters to 3 more hospitals.
What medical group is Dr. Guillermo Alfredo Walters part of?
Dr. Walters is linked to UMass Memorial Medical Group. Dmand AI links Dr. Walters to 1 more medical group.
Does Dr. Guillermo Alfredo Walters accept Medicare?
Yes. CMS data shows Dr. Walters billed Medicare for 1,449 services in 2024, and Dr. Walters accepts Medicare assignment.
What is Dr. Guillermo Alfredo Walters' MIPS score?
Dr. Walters' MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Guillermo Alfredo Walters see?
CMS counts 1,308 Medicare patients who saw Dr. Walters in 2024, with an average age of 72.
Show 3 more questionsShow fewer questions
What services does Dr. Guillermo Alfredo Walters bill to Medicare?
In 2024, Dr. Walters' most billed Medicare services were diagnostic imaging (70553), ultrasound (76770) and diagnostic imaging (70551).
Where did Dr. Guillermo Alfredo Walters go to medical school?
Dr. Walters graduated from State University of New York at Buffalo School of Medicine in 1988.
How long has Dr. Guillermo Alfredo Walters been practicing?
Dr. Walters graduated from medical school in 1988, 38 years ago.
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