Dennis Grusenmeyer, MD
NPI 1871568113 · Hospitalist Physician · Keene, NH
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis Grusenmeyer, MD is a Hospitalist Physician provider in Keene, NH (NPI 1871568113).
Provider details
- NPI number
- 1871568113
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2017-0031 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
227 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 159 | $77 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 41 | $113 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 27 | $171 |
Typical Medicare-allowed amounts for these services range $77–$171 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 13 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (6)
- 509 Biltmore AveAsheville, NC 28801-4601Phone: (828) 213-4411Fax: (828) 213-0275
- 590 Court StKeene, NH 03431-1719Phone: (603) 354-5400
- 3043 Ne 28th StLincoln City, OR 97367-4518Phone: (541) 994-3661
- 2801 N Gantenbein AvePortland, OR 97227-1623Phone: (503) 413-8407Fax: (503) 413-6951
- 3241 Western Branch BlvdChesapeake, VA 23321-5260Phone: (757) 686-3508Fax: (757) 686-0541
- 888 Swift BlvdRichland, WA 99352-3514Phone: (509) 942-2648Fax: (509) 942-2812
Registry dates
- Enumerated
- 2006-02-21
- Last updated
- 2023-09-20
- Certified
- 2023-09-20
Frequently asked questions
- What is Dennis Grusenmeyer's NPI number?
- Dennis Grusenmeyer's National Provider Identifier (NPI) is 1871568113, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Grusenmeyer's specialty?
- Dennis Grusenmeyer is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis Grusenmeyer located?
- Dennis Grusenmeyer's practice location on file with NPPES is 580 Court St, Keene, NH 03431.
- What is Dennis Grusenmeyer's phone number?
- The practice phone number listed in the NPPES registry for Dennis Grusenmeyer is (603) 354-5400.
- Does Dennis Grusenmeyer accept Medicare?
- Dennis Grusenmeyer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis Grusenmeyer's NPI active?
- Yes — Dennis Grusenmeyer's NPI (1871568113) is active in the NPPES registry as of the last update on 2023-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.