Mary Saunders, MD
NPI 1255301107 · Internal Medicine Physician · Springfield, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Saunders, MD is a Internal Medicine Physician provider in Springfield, IL (NPI 1255301107).
Provider details
- NPI number
- 1255301107
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036071398 (IL)
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
507 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 160 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 | $86 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 112 | $122 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 93 | $103 |
Typical Medicare-allowed amounts for these services range $16–$122 (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 · 145 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 891 | 59 |
| Levothyroxine Sodium | 831 | 54 |
| Furosemide | 773 | 55 |
| Atorvastatin Calcium | 694 | 56 |
| Metoprolol Succinate | 423 | 41 |
| Mirtazapine | 422 | 21 |
| Omeprazole | 396 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-24
- Last updated
- 2012-02-23
Frequently asked questions
- What is Mary Saunders's NPI number?
- Mary Saunders's National Provider Identifier (NPI) is 1255301107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Saunders's specialty?
- Mary Saunders is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Saunders located?
- Mary Saunders's practice location on file with NPPES is 2603 S 6th St, Springfield, IL 62703-3807.
- What is Mary Saunders's phone number?
- The practice phone number listed in the NPPES registry for Mary Saunders is (217) 528-0307.
- Does Mary Saunders accept Medicare?
- Mary Saunders is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Saunders's NPI active?
- Yes — Mary Saunders's NPI (1255301107) is active in the NPPES registry as of the last update on 2012-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.