Nathan Oldham, M.D.
NPI 1780883843 · Family Medicine Physician · Eldorado, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Oldham, M.D. is a Family Medicine Physician provider in Eldorado, IL (NPI 1780883843).
Provider details
- NPI number
- 1780883843
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 11013781 (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 tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
330 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 77 | $81 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 57 | $115 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 53 | $80 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 46 | $113 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 45 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 228 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 692 | 131 |
| Pantoprazole Sodium | 539 | 118 |
| Amlodipine Besylate | 530 | 126 |
| Atorvastatin Calcium | 475 | 94 |
| Furosemide | 459 | 118 |
| Gabapentin | 390 | 79 |
| Potassium Chloride | 345 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$172 across 12 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-17
- Last updated
- 2013-12-04
Frequently asked questions
- What is Nathan Oldham's NPI number?
- Nathan Oldham's National Provider Identifier (NPI) is 1780883843, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Oldham's specialty?
- Nathan Oldham is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Oldham located?
- Nathan Oldham's practice location on file with NPPES is 1201 Pine St, Eldorado, IL 62930-1634.
- What is Nathan Oldham's phone number?
- The practice phone number listed in the NPPES registry for Nathan Oldham is (618) 297-9665.
- Does Nathan Oldham accept Medicare?
- Nathan Oldham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Oldham's NPI active?
- Yes — Nathan Oldham's NPI (1780883843) is active in the NPPES registry as of the last update on 2013-12-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.