Dennis Patrick Grusenmeyer, MD
Hospitalist Physician · Keene, NH
Dennis Patrick Grusenmeyer, MD is a hospitalist physician with a practice address in Keene, New Hampshire, and NPI 1871568113, issued on Feb 21, 2006. Check the license (New Hampshire 20152, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Dennis Patrick Grusenmeyer
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 20152 NH
2017-0031 NC
MD191698 OR
0101235353 VA
MD60983758 WA
Self-reported in NPPES; status is on the state search - Practice location
- 580 Court St, Keene, NH 03431
- Phone
- (603) 354-5400
- Enumerated
- Feb 21, 2006
- Record last updated
- Sep 20, 2023
- Medicaid ID
- 010014727 VA
- Medicare enrollment
- Enrolled (PECOS I20190621002037); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 132 in New Hampshire → Look up another NPI →
Also registered at 580 Court St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelli-Ann Abbott, DPTPhysical Therapist1699155754
- Kristina Abbott, FNP-CFamily Nurse Practitioner1578368916
- Millen Abselab, MDStudent in an Organized Health Care Education/Training Program1740128479
- Anardi Agosto, M.D.Internal Medicine Physician1487090700
- Yousef Amr, MB BCHStudent in an Organized Health Care Education/Training Program1598515652
- Amy Ansaldo, RD, LDRegistered Dietitian1215796131
Verify Dennis Patrick Grusenmeyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 20152Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average hospitalist physician in 2024
192 Medicare Part D claims for 69 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium13 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
- Legacy Clinics LLCGresham, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis Patrick Grusenmeyer among 132 hospitalist physician records in New Hampshire
Dennis Patrick Grusenmeyer, MD is one of 132 hospitalist physician records with a practice address in New Hampshire. 94% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 68% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated1997 · median 2006 among the 113 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 208M00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in New Hampshire
There are 132 hospitalist physician records in New Hampshire.
All 132 in New Hampshire → Every provider in Keene → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Denise Dalmacion, MDKeene, NH 034311063073955
- Michael Keuroghlian, M.D.Keene, NH 034311770966962
- John Lapadula, D.O.Keene, NH 034311811203342
- Rachel Lovins, MDKeene, NH 034311407829393
- Raluca Rusu, M.D.Keene, NH 034311962629170
- Mircea Rusu, M.D.Keene, NH 034311124245873
- Carl Szot, M.D.Keene, NH 034311962552745
- Qiwei Zhang, M.D., PH.D.Keene, NH 034311316101330
Common questions
What is Dennis Patrick Grusenmeyer, MD's NPI number?
Dennis Patrick Grusenmeyer, MD's National Provider Identifier (NPI) is 1871568113, issued on Feb 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Patrick Grusenmeyer, MD located?
The NPPES record lists a practice address at 580 Court St, Keene, NH, 03431. Phone: (603) 354-5400. Providers update this record themselves, so call before visiting.
How can I verify Dennis Patrick Grusenmeyer, MD's license?
NPPES lists New Hampshire license number 20152, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dennis Patrick Grusenmeyer, MD prescribe under Medicare Part D?
In 2024, Dennis Patrick Grusenmeyer, MD had 192 Medicare Part D claims for 69 beneficiaries; the average among hospitalist physician prescribers was 521. 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.