Joseph Foster Jahner, OD
- Medicare patients, 2024
- 216
- Part D claims, 2024
- 69
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 935 Broad St, Grinnell, IA 50112
- Practice phone
- Call (641) 236-7502
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Jensen Optometrists
Grinnell, Iowa
Find Joseph Jahner'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.
Joseph Foster Jahner is an optometrist in Grinnell, Iowa
Joseph Jahner practices at Jensen Optometrists in Grinnell, Iowa.
Joseph Jahner's NPI, 1285245274, was assigned on August 12, 2020. Joseph Jahner holds Iowa license 101219.
- NPI
- 1285245274NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092125377
- NPI enumeration date
- August 12, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (641) 236-7502
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Joseph Foster Jahner practices at Jensen Optometrists in Grinnell, Iowa
Joseph Jahner's primary practice is Jensen Optometrists, at 935 Broad St, Grinnell, IA 50112 in Poweshiek County. The practice phone is (641) 236-7502.
- Jensen Optometrists935 Broad St, Grinnell, IA 50112 · Poweshiek CountyPhone(641) 236-7502
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Joseph Foster Jahner is affiliated with 2 sites of care and 1 medical group
Joseph Jahner's primary practice is Jensen Optometrists in Grinnell, Iowa. Dmand AI also links Joseph Jahner 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 Joseph Foster Jahner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joseph Jahner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jensen Optometrists | 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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Joseph Foster Jahner is one of 501 optometrists in Iowa
Optometrist is Joseph Jahner's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Joseph Jahner is licensed in Iowa.
Specialties and state licenses
- Optometrist, IowaPrimary
Optometrists near Joseph Jahner
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
Joseph Foster Jahner treated 216 Medicare patients in 2024, average age 75
CMS counts 216 Medicare patients who saw Joseph Jahner in 2024. The largest group is 65 to 74, with 108 patients. 70% of them have high blood pressure, and 64% have high cholesterol. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Joseph Jahner's median patient age at 62, with 59% women.
Joseph Jahner's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Joseph Jahner's Medicare patients by sex, 2024
- Women11654%
- Men10046%
Chronic conditions among Joseph Jahner's Medicare patients, 2024
- High blood pressure70%
- High cholesterol64%
- Arthritis35%
- Diabetes29%
- Chronic kidney disease23%
- Mood disorders18%
- Depression16%
- Ischemic heart disease16%
Share of Medicare patients with each condition. A patient can have several.
Joseph Jahner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Joseph Foster Jahner wrote 69 Medicare Part D claims in 2024
In 2024, Joseph Jahner wrote 69 Medicare Part D claims for 22 patients. 77% of them were for generic drugs.
Joseph Jahner's Part D claims by kind of drug, 2024
- Generic53 claims77%
- Brand-name16 claims23%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Joseph Foster Jahner ranks in the 45th percentile for cataract surgery in Medicare
Joseph Jahner accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 20 procedures of cataract surgery by Joseph Jahner, more than 45% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Joseph Jahner ranks in Medicare procedure volume
- Cataract surgery
- 45th percentile20 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Sources for Joseph Foster Jahner'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| 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 Joseph Foster Jahner
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joseph Foster Jahner's NPI number?
Joseph Foster Jahner's NPI number is 1285245274. It was assigned on August 12, 2020, and it is active in the NPI Registry.
What does Joseph Foster Jahner specialize in?
Joseph Foster Jahner is an optometrist in Grinnell, Iowa. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Joseph Foster Jahner practice?
Joseph Jahner practices at 935 Broad St, Grinnell, IA 50112. Joseph Jahner's primary practice is Jensen Optometrists in Grinnell, Iowa. Dmand AI also links Joseph Jahner to 1 group practice or clinic and 1 medical group.
What is Joseph Foster Jahner's office phone number?
The practice phone on file for Joseph Jahner is (641) 236-7502.
What is Joseph Foster Jahner's medical license number?
Joseph Jahner holds Iowa license 101219.
Does Joseph Foster Jahner accept Medicare?
Yes. CMS lists Joseph Jahner as accepting Medicare assignment.
How many Medicare patients does Joseph Foster Jahner see?
CMS counts 216 Medicare patients who saw Joseph Jahner in 2024, with an average age of 75.
How long has Joseph Foster Jahner been practicing?
Joseph Jahner graduated from medical school in 2020, 6 years ago.
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