Dr. Piotr Grabias, MD
- Medicare services, 2024
- 696
- Medicare patients, 2024
- 353
- Part D claims, 2024
- 7,040
- Hospital affiliations
- 3
- Industry payments
- $729
- Practice address
- 100 South Street, Southbridge, MA 01550
- Practice phone
- Call (508) 765-9771
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Grabias' professional email, personal email and mobile number
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Dr. Piotr Grabias is an internist in Southbridge, Massachusetts
Dr. Grabias practices at UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts, part of UMass Memorial Health Care.
Dr. Grabias' NPI, 1508847419, was assigned on November 8, 2005. Dr. Grabias holds Massachusetts license 213568.
- NPI
- 1508847419NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779559232
- NPI enumeration date
- November 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (508) 765-9771
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Piotr Grabias practices at UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts
Dr. Grabias' primary practice is UMass Memorial Health - Harrington Hospital, at 100 South Street, Southbridge, MA 01550 in Worcester County. The practice phone is (508) 765-9771.
- UMass Memorial Health - Harrington Hospital100 South Street, Southbridge, MA 01550 · Worcester CountyPhone(508) 765-9771
Source: Dmand AI Affiliation Data
Dr. Piotr Grabias is affiliated with 10 sites of care and 2 medical groups
Dr. Grabias' primary practice is UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts, part of UMass Memorial Health Care. Dr. Grabias 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. Grabias to 1 more hospital, 4 home health agencies, 2 group practices and clinics, 1 hospice 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. Piotr Grabias' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grabias practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UMass Memorial Health - Harrington Hospital | Available with a free account |
| +9 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across UMass Memorial Health Care and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Piotr Grabias is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Grabias' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Grabias is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Grabias
Counts of internists 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. Piotr Grabias billed Medicare for 696 services in 2024
CMS data shows 696 Medicare services from Dr. Grabias across 9 procedure codes in 2024, for 353 Medicare patients. Medicare paid $62,713 for them.
Dr. Grabias' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4682024: 4711%
- Other services
- 2023: 1952024: 2139%
- Tests and treatments
- 2023: 1562024: 1292%
Where Dr. Grabias' Medicare services took place, 2024
- In an office57583%
- In a facility12117%
Dr. Grabias compared with the Massachusetts median for internists, 2024
- Dr. Grabias
- Massachusetts median
- Medicare services
- 696vs 43161% above
- Medicare patients
- 353vs 19482% above
- Part D claims
- 6,447vs 40216.0 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Grabias' 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grabias and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Piotr Grabias treated 353 Medicare patients in 2024, average age 75
CMS counts 353 Medicare patients who saw Dr. Grabias in 2024. The largest group is 65 to 74, with 135 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.88, 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. Grabias' median patient age at 70, with 41% women.
Dr. Grabias' Medicare patients by age, 2024
Dr. Grabias' Medicare patients by sex, 2024
- Women14942%
- Men20458%
Chronic conditions among Dr. Grabias' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease71%
- Arthritis48%
- Anxiety42%
- Ischemic heart disease38%
- Diabetes35%
- Heart failure33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grabias' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women41%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Piotr Grabias wrote 7,040 Medicare Part D claims in 2024
In 2024, Dr. Grabias wrote 7,040 Medicare Part D claims for 530 patients. 89% of them were for generic drugs. CMS names the drug for 6,447 of them, across 122 drugs with 11 or more claims each, at $417,673 in total drug cost. In 2023, CMS named 6,320 claims across 124 drugs.
Dr. Grabias' Part D claims by kind of drug, 2024
- Generic6,266 claims89%
- Brand-name728 claims10%
- Other46 claims1%
Dr. Grabias' 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. Grabias' Part D claims, 2024
- Opioids5%324 of 7,040 claims
- Antibiotics2%133 of 7,040 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: 6,3202024: 6,4472%
Drugs named by CMS: 122 in 2024, 124 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. Piotr Grabias offers telehealth to Medicare patients
Dr. Grabias accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Grabias as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Piotr Grabias received $729 in industry payments from 2016 to 2025
CMS Open Payments shows 35 general payments to Dr. Grabias from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 86% of the total. Abbvie Inc. paid the most, $223.
General payments to Dr. Grabias by program year, 2016 to 2025
General payments to Dr. Grabias by kind, 2016 to 2025
- Food and beverage$62986%
- Education$10014%
Companies that paid Dr. Grabias the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Piotr Grabias'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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Piotr Grabias
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. Piotr Grabias' NPI number?
Dr. Piotr Grabias' NPI number is 1508847419. It was assigned on November 8, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Piotr Grabias?
Dr. Piotr Grabias is an internist in Southbridge, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Piotr Grabias practice?
Dr. Grabias practices at 100 South Street, Southbridge, MA 01550. Dr. Grabias' primary practice is UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts, part of UMass Memorial Health Care. Dmand AI also links Dr. Grabias to 1 hospital, 4 home health agencies, 2 group practices and clinics, 1 hospice and 1 medical group.
What is Dr. Piotr Grabias' office phone number?
The practice phone on file for Dr. Grabias is (508) 765-9771.
What is Dr. Piotr Grabias' medical license number?
Dr. Grabias holds Massachusetts license 213568.
Which hospitals is Dr. Piotr Grabias affiliated with?
Dr. Grabias practices at UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts. Dr. Grabias is also affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Grabias to 1 more hospital.
What medical group is Dr. Piotr Grabias part of?
Dr. Grabias is linked to UMass Memorial Medical Group. Dmand AI links Dr. Grabias to 1 more medical group.
Does Dr. Piotr Grabias accept Medicare?
Yes. CMS data shows Dr. Grabias billed Medicare for 696 services in 2024, and Dr. Grabias accepts Medicare assignment.
Does Dr. Piotr Grabias offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Grabias as offering telehealth services.
How many Medicare patients does Dr. Piotr Grabias see?
CMS counts 353 Medicare patients who saw Dr. Grabias in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Piotr Grabias bill to Medicare?
In 2024, Dr. Grabias' most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
What drugs does Dr. Piotr Grabias prescribe most?
In 2024 Medicare Part D data, Dr. Grabias' most prescribed drugs by claims were Lisinopril, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. Piotr Grabias received payments from drug or device companies?
CMS Open Payments shows $729 in general payments to Dr. Grabias from 12 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Piotr Grabias been practicing?
Dr. Grabias graduated from medical school in 1990, 36 years ago.
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