Mark Hillyer, MD
NPI 1649248840 · Family Medicine Physician · Bolivar, OH
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Hillyer, MD is a Family Medicine Physician provider in Bolivar, OH (NPI 1649248840).
Provider details
- NPI number
- 1649248840
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35082430 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 145 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 500 | 130 |
| Amlodipine Besylate | 356 | 104 |
| Losartan Potassium | 338 | 81 |
| Hydrochlorothiazide | 303 | 74 |
| Levothyroxine Sodium | 289 | 75 |
| Rosuvastatin Calcium | 243 | 66 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2012-02-17
Frequently asked questions
- What is Mark Hillyer's NPI number?
- Mark Hillyer's National Provider Identifier (NPI) is 1649248840, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hillyer's specialty?
- Mark Hillyer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Hillyer located?
- Mark Hillyer's practice location on file with NPPES is 10724 State Route 212 Ne, Bolivar, OH 44612-8740.
- What is Mark Hillyer's phone number?
- The practice phone number listed in the NPPES registry for Mark Hillyer is (330) 874-7165.
- Does Mark Hillyer accept Medicare?
- Mark Hillyer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Hillyer's NPI active?
- Yes — Mark Hillyer's NPI (1649248840) is active in the NPPES registry as of the last update on 2012-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.