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Dr. James W. Feimster, MD
NPI1811347214PAC ID3375836844
- Medicare patients, 2024
- 33
- Part D claims, 2024
- 84
- Publications
- 7
- MIPS score, 2024
- 75
- Hospital affiliations
- 2
- Practice address
- 701 N First St, Springfield, IL 62702
- Practice phone
- Call (217) 788-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Feimster's professional email, personal email and mobile number
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Dr. James W. Feimster is a general surgeon in Springfield, Illinois
Dr. Feimster practices at Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System.
Dr. Feimster's NPI, 1811347214, was assigned on June 16, 2016. Dr. Feimster graduated from Southern Illinois University School of Medicine in 2016. Dr. Feimster holds Illinois license 036.159781.
NPI and contact details
- NPI
- 1811347214NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375836844
- NPI enumeration date
- June 16, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 788-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James W. Feimster practices at Springfield Memorial Hospital in Springfield, Illinois
Dr. Feimster's primary practice is Springfield Memorial Hospital, at 701 N First St, Springfield, IL 62702 in Sangamon County. The practice phone is (217) 788-3000.
- Springfield Memorial Hospital701 N First St, Springfield, IL 62702 · Sangamon CountyPhone(217) 788-3000
Source: Dmand AI Affiliation Data
Dr. James W. Feimster is affiliated with 3 sites of care and 3 medical groups
Dr. Feimster's primary practice is Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System. Dr. Feimster is also affiliated with HSHS St. John's Hospital. The medical group on file is SIU Medicine. Dmand AI also links Dr. Feimster to 2 more medical groups and 1 group practice or clinic, each named with a free account.
HSHS St. John's HospitalSIU Medicine2 medical groupsNames with a free account1 group practice or clinicName with a free account
See all 6 affiliations for Dr. FeimsterSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James W. Feimster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Feimster practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Springfield Memorial Hospital | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James W. Feimster is one of 1,217 general surgeons in Illinois
Surgery is Dr. Feimster's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Feimster is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Feimster
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
1,217general surgeons in Illinois20general surgeons in Springfield3general surgeons at Springfield Memorial Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. James W. Feimster treated 33 Medicare patients in 2024, average age 69
CMS counts 33 Medicare patients who saw Dr. Feimster in 2024. The largest group is 65 to 74, with 14 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 1.55, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Feimster's median patient age at 53, with 72% women.
Medicare patients, 202433
Average age69
Average risk score1.55
Also on Medicaid48%
Dr. Feimster's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Feimster's Medicare patients by sex, 2024
- Women2267%
- Men1133%
Chronic conditions among Dr. Feimster's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Diabetes45%
- Ischemic heart disease42%
- Chronic kidney disease36%
- Depression33%
- Mood disorders33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Feimster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women72%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James W. Feimster wrote 84 Medicare Part D claims in 2024
In 2024, Dr. Feimster wrote 84 Medicare Part D claims for 32 patients. 96% of them were for generic drugs. CMS names the drug for 41 of them, across 3 drugs with 11 or more claims each, at $1,089 in total drug cost. In 2020, CMS named 20 claims across 1 drug.
Part D claims, 202484
Drugs named by CMS3
Total drug cost$1,089
Part D patients32
Dr. Feimster's Part D claims by kind of drug, 2024
- Generic81 claims96%
- Brand-name and other3 claims4%
Dr. Feimster'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. Feimster's Part D claims, 2024
- Opioids14%12 of 84 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, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 202024: 41105%
Drugs named by CMS: 3 in 2024, 1 in 2020.
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. James W. Feimster scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Feimster for performance year 2024, reported as part of a group. Dr. Feimster accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. James W. Feimster has 7 publications on record
Dmand AI links 7 papers to Dr. Feimster, published from 2019 to 2024. 2021 was the busiest year, with 2. The most frequent topics are Postoperative Complications, Hernia, Ventral and Herniorrhaphy. Dr. Feimster has published most often in Surg Endosc. Dr. Feimster's most frequent co-authors are John D. Mellinger, MD, Abdelrahman Nimeri, MD and Selwan David Barbat, MD.
Papers7
Years published2019 to 2024
Dr. Feimster's papers by year, 2019 to 2024
Topics Dr. Feimster writes about most
- Postoperative Complications
- Hernia, Ventral
- Herniorrhaphy
- Laparoscopy
- Patient Readmission
Dr. Feimster's most frequent co-authors
- John D. Mellinger, MD4 shared papers
- Abdelrahman Nimeri, MD3 shared papers
- Selwan David Barbat, MD2 shared papers
Recent publications by Dr. Feimster
Hernia, InguinalHernia, VentralHerniorrhaphy
AftercareAnticoagulantsBariatric Surgery
Clinical CompetenceGeneral SurgeryIllinois
See who Dr. Feimster researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Feimster works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. James W. Feimster received $245 in industry payments from 2021 to 2022
CMS Open Payments shows 4 general payments to Dr. Feimster from 2 drug and device companies from 2021 to 2022. Food and beverage make up the largest share, 100% of the total. W. L. Gore & Associates, Inc. paid the most, $156.
General payments to Dr. Feimster by program year, 2021 to 2022
Companies that paid Dr. Feimster the most, 2021 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James W. Feimster graduated from Southern Illinois University School of Medicine
Dr. Feimster graduated from Southern Illinois University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James W. Feimster'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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. James W. Feimster
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. James W. Feimster's NPI number?
Dr. James W. Feimster's NPI number is 1811347214. It was assigned on June 16, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. James W. Feimster?
Dr. James W. Feimster is a general surgeon in Springfield, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. James W. Feimster practice?
Dr. Feimster practices at 701 N First St, Springfield, IL 62702. Dr. Feimster's primary practice is Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System. Dmand AI also links Dr. Feimster to 2 medical groups and 1 group practice or clinic.
What is Dr. James W. Feimster's office phone number?
The practice phone on file for Dr. Feimster is (217) 788-3000.
What is Dr. James W. Feimster's medical license number?
Dr. Feimster holds Illinois license 036.159781.
Which hospitals is Dr. James W. Feimster affiliated with?
Dr. Feimster practices at Springfield Memorial Hospital in Springfield, Illinois. Dr. Feimster is also affiliated with HSHS St. John's Hospital.
What medical group is Dr. James W. Feimster part of?
Dr. Feimster is linked to SIU Medicine. Dmand AI links Dr. Feimster to 2 more medical groups.
Does Dr. James W. Feimster accept Medicare?
Yes. CMS lists Dr. Feimster as accepting Medicare assignment.
What is Dr. James W. Feimster's MIPS score?
Dr. Feimster's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. James W. Feimster see?
CMS counts 33 Medicare patients who saw Dr. Feimster in 2024, with an average age of 69.
Show 6 more questionsShow fewer questions
Where did Dr. James W. Feimster go to medical school?
Dr. Feimster graduated from Southern Illinois University School of Medicine in 2016.
What drugs does Dr. James W. Feimster prescribe most?
In 2024 Medicare Part D data, Dr. Feimster's most prescribed drugs by claims were Ursodiol, Ondansetron HCl and Oxycodone HCl.
Has Dr. James W. Feimster received payments from drug or device companies?
CMS Open Payments shows $245 in general payments to Dr. Feimster from 2 companies from 2021 to 2022. The largest total came from W. L. Gore & Associates, Inc.
How long has Dr. James W. Feimster been practicing?
Dr. Feimster graduated from medical school in 2016, 10 years ago.
Does Dr. James W. Feimster do research?
Dmand AI links 7 publications to Dr. Feimster, published from 2019 to 2024.
Who does Dr. James W. Feimster publish with?
Dr. Feimster's most frequent co-authors are John D. Mellinger, MD (4 shared papers), Abdelrahman Nimeri, MD (3 shared papers) and Selwan David Barbat, MD (2 shared papers).
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