David I. Kahan, OD
- Medicare patients, 2024
- 380
- Part D claims, 2024
- 57
- Industry payments
- $61
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 25 Sack Blvd, Leominster, MA 01453
- Practice phone
- Call (978) 537-2270
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Baystate Eye Associates of Leominster Inc
Leominster, Massachusetts
Find David Kahan'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.
David I. Kahan is an optometrist in Leominster, Massachusetts
David Kahan practices at Baystate Eye Associates of Leominster Inc in Leominster, Massachusetts.
David Kahan's NPI, 1558473595, was assigned on August 31, 2006. David Kahan graduated from New England College of Optometry in 1973. David Kahan holds Massachusetts license 2437.
- NPI
- 1558473595NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820190374
- NPI enumeration date
- August 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 537-2270
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
David I. Kahan practices at Baystate Eye Associates of Leominster Inc in Leominster, Massachusetts
David Kahan's primary practice is Baystate Eye Associates of Leominster Inc, at 25 Sack Blvd, Leominster, MA 01453 in Worcester County. The practice phone is (978) 537-2270.
- Baystate Eye Associates of Leominster Inc25 Sack Blvd, Leominster, MA 01453 · Worcester CountyPhone(978) 537-2270
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
David I. Kahan is affiliated with 3 sites of care and 2 medical groups
David Kahan's primary practice is Baystate Eye Associates of Leominster Inc in Leominster, Massachusetts. Dmand AI also links David Kahan to 2 group practices and clinics and 2 medical groups, 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 David I. Kahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Kahan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baystate Eye Associates of Leominster Inc | 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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David I. Kahan is one of 1,098 optometrists in Massachusetts
Optometrist is David Kahan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. David Kahan is licensed in Massachusetts.
Specialties and state licenses
- Optometrist, MassachusettsPrimary
Optometrists near David Kahan
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
David I. Kahan treated 380 Medicare patients in 2024, average age 68
CMS counts 380 Medicare patients who saw David Kahan in 2024. The largest group is 65 to 74, with 181 patients. 75% of them have high cholesterol, and 65% have high blood pressure. 36% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Kahan's median patient age at 47, with 56% women.
David Kahan's Medicare patients by age, 2024
David Kahan's Medicare patients by sex, 2024
- Women21857%
- Men16243%
Chronic conditions among David Kahan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Arthritis42%
- Anxiety32%
- Mood disorders31%
- Diabetes29%
- Depression25%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
David Kahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women56%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
David I. Kahan wrote 57 Medicare Part D claims in 2024
In 2024, David Kahan wrote 57 Medicare Part D claims for 38 patients. 82% of them were for generic drugs.
David Kahan's Part D claims by kind of drug, 2024
- Generic47 claims82%
- Brand-name and other10 claims18%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How David I. Kahan takes part in Medicare
David Kahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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David I. Kahan received $61 in industry payments in 2025
CMS Open Payments shows 4 general payments to David Kahan from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $39.
Companies that paid David Kahan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
David I. Kahan graduated from New England College of Optometry
David Kahan graduated from New England College of Optometry in 1973.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for David I. Kahan'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) |
| 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 David I. Kahan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David I. Kahan's NPI number?
David I. Kahan's NPI number is 1558473595. It was assigned on August 31, 2006, and it is active in the NPI Registry.
What does David I. Kahan specialize in?
David I. Kahan is an optometrist in Leominster, Massachusetts. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does David I. Kahan practice?
David Kahan practices at 25 Sack Blvd, Leominster, MA 01453. David Kahan's primary practice is Baystate Eye Associates of Leominster Inc in Leominster, Massachusetts. Dmand AI also links David Kahan to 2 group practices and clinics and 2 medical groups.
What is David I. Kahan's office phone number?
The practice phone on file for David Kahan is (978) 537-2270.
What is David I. Kahan's medical license number?
David Kahan holds Massachusetts license 2437.
Does David I. Kahan accept Medicare?
Yes. CMS lists David Kahan as accepting Medicare assignment.
How many Medicare patients does David I. Kahan see?
CMS counts 380 Medicare patients who saw David Kahan in 2024, with an average age of 68.
Where did David I. Kahan go to medical school?
David Kahan graduated from New England College of Optometry in 1973.
Has David I. Kahan received payments from drug or device companies?
CMS Open Payments shows $61 in general payments to David Kahan from 2 companies from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has David I. Kahan been practicing?
David Kahan graduated from medical school in 1973, 53 years ago.
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