David A. Gruenberg, M.D.
Allergy & Immunology Physician · Chelmsford, MA
David A. Gruenberg, M.D. is an allergy & immunology physician with a practice address in Chelmsford, Massachusetts, and NPI 1386773422, issued on Mar 5, 2007. Check the license (Massachusetts 251130, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- David A. Gruenberg
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 251130 MA
Self-reported in NPPES; status is on the state search - Practice location
- 9 Village SQ, Chelmsford, MA 01824
- Phone
- (978) 256-4531
- Enumerated
- Mar 5, 2007
- Record last updated
- Jul 21, 2022
- Fax
- (978) 256-1377
- Medicaid ID
- 110093601A MA
- Medicare enrollment
- Enrolled (PECOS I20100922001137); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 121 in Massachusetts → Look up another NPI →
Also registered at 9 Village SQ
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angela Ahuja, MDAllergy & Immunology Physician1851300230
- Wilfred Beaucher, MDAllergy Physician1932109055
- Mary Farrahar, NURSE PRACTITIONERFamily Nurse Practitioner1316992555
- Li Liang, MDAllergy Physician1912994567
- Ami Mehra, M.D.Allergy & Immunology Physician1760400634
- Elizabeth YakaboskiAllergy & Immunology Physician1134583560
Verify David A. Gruenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 251130Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average allergy & immunology physician in 2024
772 Medicare Part D claims for 227 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D.
Most prescribed
- Montelukast Sodium86 claims
- Prednisone60 claims
- Albuterol Sulfate Hfa57 claims
- Breo Ellipta55 claims
- Trelegy Ellipta52 claims
- Ipratropium Bromide36 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: $79.66
4 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 2,496 providers of this specialty with any payment received $8,321.81 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
- Allergy And Asthma Specialists, PCNashua, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David A. Gruenberg among 121 allergy & immunology physician records in Massachusetts
David A. Gruenberg, M.D. is one of 121 allergy & immunology physician records with a practice address in Massachusetts. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 44% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2005 · median 2003 among the 86 with a school on file
- Record last updated2022 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Massachusetts
There are 121 allergy & immunology physician records in Massachusetts.
All 121 in Massachusetts → Every provider in Chelmsford → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Angela Ahuja, MDChelmsford, MA 018241851300230
- Ami Mehra, M.D.Chelmsford, MA 018241760400634
- Elizabeth YakaboskiChelmsford, MA 018241134583560
- Aba Al-Kaabi, M.D.Burlington, MA 018051467749341
- Bruce Birkby, M.D.Lawrence, MA 018431932103298
- Ellen Dutta, M.D.Burlington, MA 018051588693139
- Jessica Feng, MDBurlington, MA 018051306474093
- Monica Ghoshhajra, M.D.Burlington, MA 018051568632438
Common questions
What is David A. Gruenberg, M.D.'s NPI number?
David A. Gruenberg, M.D.'s National Provider Identifier (NPI) is 1386773422, issued on Mar 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David A. Gruenberg, M.D. located?
The NPPES record lists a practice address at 9 Village SQ, Chelmsford, MA, 01824. Phone: (978) 256-4531. Providers update this record themselves, so call before visiting.
How can I verify David A. Gruenberg, M.D.'s license?
NPPES lists Massachusetts license number 251130, 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 David A. Gruenberg, M.D. prescribe under Medicare Part D?
In 2024, David A. Gruenberg, M.D. had 772 Medicare Part D claims for 227 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.