John J. Geiser, OD
- Medicare patients, 2024
- 537
- Part D claims, 2024
- 93
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 8940 N Wood Sage Rd, Peoria, IL 61615
- Practice phone
- Call (309) 243-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Oncology-Hematology Associates of Central Illinois P C
Peoria, Illinois
Find John Geiser'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.
John J. Geiser is an optometrist in Peoria, Illinois
John Geiser practices at Oncology-Hematology Associates of Central Illinois P C in Peoria, Illinois.
John Geiser's NPI, 1578580189, was assigned on July 17, 2006. John Geiser graduated from Indiana University - School of Optometry in 1972.
- NPI
- 1578580189NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880726207
- NPI enumeration date
- July 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (309) 243-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John J. Geiser practices at Oncology-Hematology Associates of Central Illinois P C in Peoria, Illinois
John Geiser's primary practice is Oncology-Hematology Associates of Central Illinois P C, at 8940 N Wood Sage Rd, Peoria, IL 61615 in Peoria County. The practice phone is (309) 243-3000.
- Oncology-Hematology Associates of Central Illinois P C8940 N Wood Sage Rd, Peoria, IL 61615 · Peoria CountyPhone(309) 243-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John J. Geiser is affiliated with 2 sites of care and 1 medical group
John Geiser's primary practice is Oncology-Hematology Associates of Central Illinois P C in Peoria, Illinois. Dmand AI also links John Geiser to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at John J. Geiser's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Geiser practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Oncology-Hematology Associates of Central Illinois P C | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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John J. Geiser is one of 2,194 optometrists in Illinois
Optometrist is John Geiser's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Geiser has a license on file in Illinois.
Specialties and state licenses
- Optometrist, Illinois
Optometrists near John Geiser
Counts of optometrists 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
John J. Geiser treated 537 Medicare patients in 2024, average age 75
CMS counts 537 Medicare patients who saw John Geiser in 2024. The largest group is 65 to 74, with 266 patients. 72% of them have high cholesterol, and 67% have high blood pressure. 7% are also on Medicaid. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Geiser's median patient age at 74, with 54% women.
John Geiser's Medicare patients by age, 2024
John Geiser's Medicare patients by sex, 2024
- Women28653%
- Men25147%
Chronic conditions among John Geiser's Medicare patients, 2024
- High cholesterol72%
- High blood pressure67%
- Arthritis36%
- Diabetes29%
- Chronic kidney disease23%
- Anxiety18%
- Ischemic heart disease18%
- Cancer17%
Share of Medicare patients with each condition. A patient can have several.
John Geiser's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John J. Geiser wrote 93 Medicare Part D claims in 2024
In 2024, John Geiser wrote 93 Medicare Part D claims for 51 patients. 85% of them were for generic drugs.
John Geiser's Part D claims by kind of drug, 2024
- Generic79 claims85%
- Brand-name14 claims15%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John J. Geiser scored 0 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 0 out of 100 for John Geiser for performance year 2024, reported individually. John Geiser accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 61 procedures of cataract surgery by John Geiser, more than 67% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
John Geiser's MIPS scores, performance year 2024
- 0of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 0of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where John Geiser ranks in Medicare procedure volume
- Cataract surgery
- 67th percentile61 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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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John J. Geiser graduated from Indiana University - School of Optometry
John Geiser graduated from Indiana University - School of Optometry in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John J. Geiser'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 (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) |
| 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 John J. Geiser
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John J. Geiser's NPI number?
John J. Geiser's NPI number is 1578580189. It was assigned on July 17, 2006, and it is active in the NPI Registry.
What does John J. Geiser specialize in?
John J. Geiser is an optometrist in Peoria, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John J. Geiser practice?
John Geiser practices at 8940 N Wood Sage Rd, Peoria, IL 61615. John Geiser's primary practice is Oncology-Hematology Associates of Central Illinois P C in Peoria, Illinois. Dmand AI also links John Geiser to 1 group practice or clinic and 1 medical group.
What is John J. Geiser's office phone number?
The practice phone on file for John Geiser is (309) 243-3000.
Does John J. Geiser accept Medicare?
Yes. CMS lists John Geiser as accepting Medicare assignment.
What is John J. Geiser's MIPS score?
John Geiser's MIPS final score for performance year 2024 is 0 out of 100, reported individually.
How many Medicare patients does John J. Geiser see?
CMS counts 537 Medicare patients who saw John Geiser in 2024, with an average age of 75.
Where did John J. Geiser go to medical school?
John Geiser graduated from Indiana University - School of Optometry in 1972.
How long has John J. Geiser been practicing?
John Geiser graduated from medical school in 1972, 54 years ago.
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