John Grimm, D.O.
NPI 1912949918 · Internal Medicine Physician · Harrison, OH
John Grimm, D.O. is a Internal Medicine Physician provider in Harrison, OH (NPI 1912949918).
Provider details
- NPI number
- 1912949918
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 34005816 (OH)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
82 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 56 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 26 | $120 |
Typical Medicare-allowed amounts for these services range $84–$120 (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 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 206 | 102 |
| Lisinopril | 149 | 82 |
| Amlodipine Besylate | 117 | 53 |
| Metformin Hcl | 94 | 47 |
| Levothyroxine Sodium | 87 | 41 |
| Simvastatin | 83 | 44 |
| Hydrochlorothiazide | 81 | 42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-12
- Last updated
- 2011-11-18
Frequently asked questions
- What is John Grimm's NPI number?
- John Grimm's National Provider Identifier (NPI) is 1912949918, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grimm's specialty?
- John Grimm is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Grimm located?
- John Grimm's practice location on file with NPPES is 10450 New Haven Rd, Harrison, OH 45030-2780.
- What is John Grimm's phone number?
- The practice phone number listed in the NPPES registry for John Grimm is (513) 921-4227.
- Is John Grimm's NPI active?
- Yes — John Grimm's NPI (1912949918) is active in the NPPES registry as of the last update on 2011-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.