Piotr Grabias, M.D.
Internal Medicine Physician · Webster, MA
Piotr Grabias, M.D. is an internal medicine physician with a practice address in Webster, Massachusetts, and NPI 1508847419, issued on Nov 8, 2005. Check the license (Massachusetts 213568, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Piotr Grabias
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 213568 MA
Self-reported in NPPES; status is on the state search - Practice location
- 340 Thompson RD, Webster, MA 01570
- Phone
- (508) 949-1988
- Enumerated
- Nov 8, 2005
- Record last updated
- Nov 4, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 0199231 MA
- Medicare enrollment
- Enrolled (PECOS I20040907000353); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 340 Thompson RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Piotr Grabias in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 213568Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
7,040 Medicare Part D claims for 530 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 324 claims were for opioids.
Most prescribed
- Lisinopril428 claims
- Atorvastatin Calcium405 claims
- Levothyroxine Sodium245 claims
- Amlodipine Besylate212 claims
- Metoprolol Succinate190 claims
- Omeprazole171 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $67.57
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Grabias Medical Group PCWebster, MA
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Piotr Grabias among 6,825 internal medicine physician records in Massachusetts
Piotr Grabias, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1990 · median 2004 among the 4,103 with a school on file
- Record last updated2020 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in Webster
They are 12 of the 190 NPPES records with a practice address in Webster, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Webster → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mark Davidson, M.D.Webster, MA 015701417948522
- Lindsey GirouxWebster, MA 015701619691045
- Kenneth Guarnieri, M.D.Webster, MA 015701679547830
- Krzysztof Kacprzak, M.D.Webster, MA 015701952364523
- Dmitry Levenson, MDWebster, MA 015701588685671
- Thalia Madera, PAWebster, MA 015701942933254
- Gil Rohald, M.D.Webster, MA 015701740324730
- Beata Stancel-Grabias, M.D.Webster, MA 015701275514184
Common questions
What is Piotr Grabias, M.D.'s NPI number?
Piotr Grabias, M.D.'s National Provider Identifier (NPI) is 1508847419, issued on Nov 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Piotr Grabias, M.D. located?
The NPPES record lists a practice address at 340 Thompson RD, Webster, MA, 01570. Phone: (508) 949-1988. Providers update this record themselves, so call before visiting.
How can I verify Piotr Grabias, M.D.'s license?
NPPES lists Massachusetts license number 213568, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Piotr Grabias, M.D. prescribe under Medicare Part D?
In 2024, Piotr Grabias, M.D. had 7,040 Medicare Part D claims for 530 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.