Dr. Nathan Oldham, MD
- Medicare services, 2024
- 330
- Medicare patients, 2024
- 151
- Part D claims, 2024
- 17,685
- MIPS score, 2024
- 91
- Hospital affiliations
- 5
- Practice address
- 1201 Pine Street, Eldorado, IL 62930
- Practice phone
- Call (618) 273-3361
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oldham's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Nathan Oldham is a family medicine physician in Eldorado, Illinois
Dr. Oldham practices at Ferrell Hospital in Eldorado, Illinois, part of Ferrell Hospital.
Dr. Oldham's NPI, 1780883843, was assigned on July 17, 2007. Dr. Oldham graduated from Southern Illinois University School of Medicine in 2007. Dr. Oldham holds Illinois license 036125954.
- NPI
- 1780883843NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587724299
- NPI enumeration date
- July 17, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (618) 273-3361
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nathan Oldham practices at Ferrell Hospital in Eldorado, Illinois
Dr. Oldham's primary practice is Ferrell Hospital, at 1201 Pine Street, Eldorado, IL 62930 in Saline County. The practice phone is (618) 273-3361.
- Ferrell Hospital1201 Pine Street, Eldorado, IL 62930 · Saline CountyPhone(618) 273-3361
Source: Dmand AI Affiliation Data
Dr. Nathan Oldham is affiliated with 10 sites of care and 1 medical group
Dr. Oldham's primary practice is Ferrell Hospital in Eldorado, Illinois, part of Ferrell Hospital. Dr. Oldham is also affiliated with Deaconess Midtown Hospital. The medical group on file is Ferrell Hospital. Dmand AI also links Dr. Oldham to 3 more hospitals, 3 home health agencies, 1 hospice and 1 skilled nursing facility, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nathan Oldham's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oldham practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ferrell Hospital | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Ferrell Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nathan Oldham is one of 5,105 family medicine physicians in Illinois
Family medicine is Dr. Oldham's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dmand AI has Dr. Oldham's licenses on file in 2 states: Illinois and Indiana.
Specialties and state licenses
- Family medicine, IllinoisPrimary
- Indiana license
Family medicine physicians near Dr. Oldham
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nathan Oldham billed Medicare for 330 services in 2024
CMS data shows 330 Medicare services from Dr. Oldham across 7 procedure codes in 2024, for 151 Medicare patients. Medicare paid $20,033 for them.
Dr. Oldham's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4022024: 26634%
- Tests and treatments
- 2023: 02024: 64
Where Dr. Oldham's Medicare services took place, 2024
- In an office4514%
- In a facility28586%
Dr. Oldham compared with the Illinois median for family medicine physicians, 2024
- Dr. Oldham
- Illinois median
- Medicare services
- 330vs 3567% below
- Medicare patients
- 151vs 1606% below
- Part D claims
- 16,869vs 61827.3 times
Medians across 5,015 family medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Oldham's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathan Oldham treated 151 Medicare patients in 2024, average age 76
CMS counts 151 Medicare patients who saw Dr. Oldham in 2024. The largest group is 65 to 74, with 57 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oldham's median patient age at 73, with 58% women.
Dr. Oldham's Medicare patients by age, 2024
Dr. Oldham's Medicare patients by sex, 2024
- Women9160%
- Men6040%
Chronic conditions among Dr. Oldham's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis68%
- Diabetes42%
- Anxiety40%
- COPD37%
- Ischemic heart disease37%
- Mood disorders36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oldham's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan Oldham wrote 17,685 Medicare Part D claims in 2024
In 2024, Dr. Oldham wrote 17,685 Medicare Part D claims for 695 patients. 83% of them were for generic drugs. CMS names the drug for 16,869 of them, across 227 drugs with 11 or more claims each, at $1,786,108 in total drug cost. In 2023, CMS named 19,195 claims across 220 drugs.
Dr. Oldham's Part D claims by kind of drug, 2024
- Generic14,691 claims83%
- Brand-name2,838 claims16%
- Other156 claims1%
Dr. Oldham's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Oldham's Part D claims, 2024
- Opioids3%519 of 17,685 claims
- Antibiotics2%417 of 17,685 claims
- Antipsychotics, patients 65 and over1%185 of 17,685 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 19,1952024: 16,86912%
Drugs named by CMS: 227 in 2024, 220 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Nathan Oldham scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Oldham for performance year 2024, reported through an alternative payment model (APM). Dr. Oldham accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Oldham's MIPS scores, performance year 2024
- 91of 100Final score
- 72.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Nathan Oldham received $4,275 in industry payments from 2016 to 2025
CMS Open Payments shows 321 general payments to Dr. Oldham from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. AstraZeneca Pharmaceuticals LP paid the most, $604.
General payments to Dr. Oldham by program year, 2016 to 2025
General payments to Dr. Oldham by kind, 2016 to 2025
- Food and beverage$4,15397%
- Education$1223%
Companies that paid Dr. Oldham the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathan Oldham graduated from Southern Illinois University School of Medicine
Dr. Oldham graduated from Southern Illinois University School of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathan Oldham's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nathan Oldham
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nathan Oldham's NPI number?
Dr. Nathan Oldham's NPI number is 1780883843. It was assigned on July 17, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan Oldham?
Dr. Nathan Oldham is a family medicine physician in Eldorado, Illinois. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Nathan Oldham practice?
Dr. Oldham practices at 1201 Pine Street, Eldorado, IL 62930. Dr. Oldham's primary practice is Ferrell Hospital in Eldorado, Illinois, part of Ferrell Hospital. Dmand AI also links Dr. Oldham to 3 hospitals, 3 home health agencies, 1 hospice and 1 skilled nursing facility.
What is Dr. Nathan Oldham's office phone number?
The practice phone on file for Dr. Oldham is (618) 273-3361.
What is Dr. Nathan Oldham's medical license number?
Dr. Oldham holds Illinois license 036125954, one of the licenses on file in 2 states.
Which states has Dr. Nathan Oldham been licensed in?
Dmand AI has state licenses on file for Dr. Oldham in Illinois and Indiana.
Which hospitals is Dr. Nathan Oldham affiliated with?
Dr. Oldham practices at Ferrell Hospital in Eldorado, Illinois. Dr. Oldham is also affiliated with Deaconess Midtown Hospital. Dmand AI links Dr. Oldham to 3 more hospitals.
What medical group is Dr. Nathan Oldham part of?
Dr. Oldham is linked to Ferrell Hospital.
Does Dr. Nathan Oldham accept Medicare?
Yes. CMS data shows Dr. Oldham billed Medicare for 330 services in 2024, and Dr. Oldham accepts Medicare assignment.
What is Dr. Nathan Oldham's MIPS score?
Dr. Oldham's MIPS final score for performance year 2024 is 91 out of 100, reported through an alternative payment model (APM).
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Nathan Oldham see?
CMS counts 151 Medicare patients who saw Dr. Oldham in 2024, with an average age of 76.
What services does Dr. Nathan Oldham bill to Medicare?
In 2024, Dr. Oldham's most billed Medicare services were hospital inpatient care (99232), heart test or procedure (93010) and hospital inpatient care (99239).
Where did Dr. Nathan Oldham go to medical school?
Dr. Oldham graduated from Southern Illinois University School of Medicine in 2007.
What drugs does Dr. Nathan Oldham prescribe most?
In 2024 Medicare Part D data, Dr. Oldham's most prescribed drugs by claims were Levothyroxine Sodium, Pantoprazole Sodium and Amlodipine Besylate.
Has Dr. Nathan Oldham received payments from drug or device companies?
CMS Open Payments shows $4,275 in general payments to Dr. Oldham from 29 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Nathan Oldham been practicing?
Dr. Oldham graduated from medical school in 2007, 19 years ago.
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