Diana Immenhausen, D.O.
Family Medicine Physician · Brimfield, MA
Diana Immenhausen, D.O. is a family medicine physician with a practice address in Brimfield, Massachusetts, and NPI 1821331604, issued on Mar 31, 2013. Check the license (Massachusetts 295025, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Diana Immenhausen
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 295025 MA
283013 NY
Self-reported in NPPES; status is on the state search - Practice location
- 255 E Old Sturbridge RD, Brimfield, MA 01010
- Phone
- (413) 245-3389
- Enumerated
- Mar 31, 2013
- Record last updated
- Feb 2, 2023
- Medicare enrollment
- Enrolled (PECOS I20221228001958); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2013
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 255 E Old Sturbridge RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Cavagnaro, MDInternal Medicine Physician1578597456
- Abigayle Goudreau, DNPNurse Practitioner1659055135
- Jamie Lusignan, FNP-BCFamily Nurse Practitioner1417848383
- Katarzyna Pomianowski, MDFamily Medicine Physician1821062407
- Yasir Saleem, D.O.Family Medicine Physician1700263944
- Kimberly Vetal, F.N.P.Family Nurse Practitioner1942407069
Verify Diana Immenhausen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 295025Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% more Medicare Part D claims than the average family medicine physician in 2024
4,388 Medicare Part D claims for 581 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 259 claims were for opioids.
Most prescribed
- Atorvastatin Calcium241 claims
- Lisinopril185 claims
- Levothyroxine Sodium158 claims
- Oxycodone Hcl136 claims
- Hydrochlorothiazide119 claims
- Gabapentin118 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.
Bills Medicare through one group practice
- Umass Memorial Medical Group IncSouthbridge, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Immenhausen among 2,265 family medicine physician records in Massachusetts
Diana Immenhausen, D.O. is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2013 · median 2006 among the 1,529 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family medicine physician records list a practice address in Brimfield
They are 3 of the 22 NPPES records with a practice address in Brimfield, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Brimfield → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Katarzyna Pomianowski, MDBrimfield, MA 010101821062407
- Yasir Saleem, D.O.Brimfield, MA 010101700263944
- Mary Bartley, MDBelchertown, MA 010071396752051
- Robert Rechtschaffen, MDBelchertown, MA 010071700897337
- Sandra Augusto, M.D.Barre, MA 010051417342080
- Corey Costanzo, DO, MPH, MSBarre, MA 010051780144055
- Julia Fleet, D.O.Barre, MA 010051063850758
- Nicholas Hajj, M.D.Barre, MA 010051992168421
Common questions
What is Diana Immenhausen, D.O.'s NPI number?
Diana Immenhausen, D.O.'s National Provider Identifier (NPI) is 1821331604, issued on Mar 31, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Diana Immenhausen, D.O. located?
The NPPES record lists a practice address at 255 E Old Sturbridge RD, Brimfield, MA, 01010. Phone: (413) 245-3389. Providers update this record themselves, so call before visiting.
How can I verify Diana Immenhausen, D.O.'s license?
NPPES lists Massachusetts license number 295025, 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 Diana Immenhausen, D.O. prescribe under Medicare Part D?
In 2024, Diana Immenhausen, D.O. had 4,388 Medicare Part D claims for 581 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.