Abby Hornstein, MD
Blood Banking & Transfusion Medicine Physician · Gardner, MA
Abby Hornstein, MD is a blood banking & transfusion medicine physician with a practice address in Gardner, Massachusetts, and NPI 1427048628, issued on Oct 27, 2005. Check the license (Massachusetts 80164, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Abby Hornstein
- Credential
- MD
- Primary taxonomy
- Blood Banking & Transfusion Medicine Physician 207ZB0001X
- License numbers
- 80164 MA
MD08831 RI
Self-reported in NPPES; status is on the state search - Practice location
- 242 Green St, Gardner, MA 01440
- Phone
- (978) 630-6256
- Enumerated
- Oct 27, 2005
- Record last updated
- May 5, 2026
- Fax
- (978) 630-6489
- Medicare enrollment
- Enrolled (PECOS I20140925001438); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1990
- Entity
- Type 1 · individual
8 nearest blood banking & transfusion medicine physician records → All 26 in Massachusetts → Look up another NPI →
Also registered at 242 Green St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nithya Agrawal, MD., MS., MPHInternal Medicine Physician1982811212
- Jane Allard, RNRegistered Nurse1003470493
- Amber Bertrand, PHARMDPharmacist1013835537
- Catherine Biliouris, MS, RD, LDN, CDERegistered Dietitian1235260142
- Taylor Boudreau, CNPNurse Practitioner1437502630
- Susanna Casey, NPNurse Practitioner1225106040
Verify Abby Hornstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 80164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 82 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $25.72
2 payments; by number, the most common kind was food and beverage; the largest payer was Tempus AI, Inc. The 104 providers of this specialty with any payment received $16,216.46 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 one group practice
- University Pathologists, LLCFall River, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Abby Hornstein among 26 blood banking & transfusion medicine physician records in Massachusetts
Abby Hornstein, MD is one of 26 blood banking & transfusion medicine physician records with a practice address in Massachusetts. 54% 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 · 54% of these records are
- In the CMS Doctors and Clinicians fileYes · 46% of these records are
- Graduated1990 · median 1992 among the 12 with a school on file
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZB0001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Blood Banking & Transfusion Medicine Physician providers in Massachusetts
There are 26 blood banking & transfusion medicine physician records in Massachusetts.
All 26 in Massachusetts → Every provider in Gardner → Blood Banking & Transfusion Medicine Physician nationwide →
The 8 blood banking & transfusion medicine physician records with the nearest ZIP codes
- Sarah Rososhansky, M.D.Worcester, MA 016091205861671
- Robert Arena, MDWorcester, MA 016551225298318
- Vishesh Chhibber, M.D.Worcester, MA 016551386794667
- Yanhua Li, M.D.Worcester, MA 016551174579361
- Lanu Stoddart, MDWorcester, MA 016551154354728
- Lucinda Wheelock, M.D.Worcester, MA 016551417147513
- Yong Zhao, MDWorcester, MA 016551366448813
- Leon Zheng, MD, PHDWorcester, MA 016551669037537
Common questions
What is Abby Hornstein, MD's NPI number?
Abby Hornstein, MD's National Provider Identifier (NPI) is 1427048628, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Abby Hornstein, MD located?
The NPPES record lists a practice address at 242 Green St, Gardner, MA, 01440. Phone: (978) 630-6256. Providers update this record themselves, so call before visiting.
How can I verify Abby Hornstein, MD's license?
NPPES lists Massachusetts license number 80164, 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.
What is Abby Hornstein, MD's MIPS final score?
The 2023 MIPS final score is 82 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.