Mark Graves, MD
NPI 1285702308 · Internal Medicine Physician · Springfield, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Graves, MD is a Internal Medicine Physician provider in Springfield, IL (NPI 1285702308).
Provider details
- NPI number
- 1285702308
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 01043637A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 · 109 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 394 | 108 |
| Amlodipine Besylate | 304 | 92 |
| Gabapentin | 255 | 62 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 251 | 39 |
| Lisinopril | 243 | 73 |
| Omeprazole | 188 | 52 |
Practice location
Mailing address
Additional practice locations (2)
- 1600 E Clear Lake Ave Ste 120Springfield, IL 62703-1172Phone: (217) 545-8000
- 421 Chestnut StEvansville, IN 47713-1227Phone: (812) 426-9372Fax: (812) 858-4545
Registry dates
- Enumerated
- 2006-11-30
- Last updated
- 2021-12-10
- Certified
- 2021-12-10
Frequently asked questions
- What is Mark Graves's NPI number?
- Mark Graves's National Provider Identifier (NPI) is 1285702308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Graves's specialty?
- Mark Graves is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Graves located?
- Mark Graves's practice location on file with NPPES is 751 N Rutledge St Ste 1100, Springfield, IL 62702-4968.
- What is Mark Graves's phone number?
- The practice phone number listed in the NPPES registry for Mark Graves is (217) 545-8000.
- Does Mark Graves accept Medicare?
- Mark Graves is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Graves's NPI active?
- Yes — Mark Graves's NPI (1285702308) is active in the NPPES registry as of the last update on 2021-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.