John T. Barr, OD
- Medicare patients, 2024
- 544
- Part D claims, 2024
- 56
- Industry payments
- $105
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 2108 Didonato Dr, Chester, MD 21619
- Practice phone
- Call (410) 643-7141
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eastern Shore Family Foot Care
Chester, Maryland
Find John Barr'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 T. Barr is an optometrist in Chester, Maryland
John Barr practices at Eastern Shore Family Foot Care in Chester, Maryland.
John Barr's NPI, 1497884191, was assigned on March 6, 2007. John Barr graduated from Pennsylvania College of Optometry in 1988. John Barr holds Maryland license TA-1003.
- NPI
- 1497884191NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820264328
- NPI enumeration date
- March 6, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 643-7141
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John T. Barr practices at Eastern Shore Family Foot Care in Chester, Maryland
John Barr's primary practice is Eastern Shore Family Foot Care, at 2108 Didonato Dr, Chester, MD 21619 in Queen Annes County. The practice phone is (410) 643-7141.
- Eastern Shore Family Foot Care2108 Didonato Dr, Chester, MD 21619 · Queen Annes CountyPhone(410) 643-7141
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John T. Barr is affiliated with 2 sites of care
John Barr's primary practice is Eastern Shore Family Foot Care in Chester, Maryland. Dmand AI also links John Barr to 1 physician office, 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 T. Barr's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Barr practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eastern Shore Family Foot Care | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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John T. Barr is one of 562 optometrists in Maryland
Optometrist is John Barr's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Barr is licensed in Maryland.
Specialties and state licenses
- Optometrist, MarylandPrimary
Optometrists near John Barr
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 T. Barr treated 544 Medicare patients in 2024, average age 76
CMS counts 544 Medicare patients who saw John Barr in 2024. The largest group is 65 to 74, with 237 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 3% are also on Medicaid. Their average risk score is 0.88, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Barr's median patient age at 71, with 61% women.
John Barr's Medicare patients by age, 2024
John Barr's Medicare patients by sex, 2024
- Women31157%
- Men23343%
Chronic conditions among John Barr's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis44%
- Anxiety24%
- Ischemic heart disease24%
- Mood disorders22%
- Diabetes20%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
John Barr's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John T. Barr wrote 56 Medicare Part D claims in 2024
In 2024, John Barr wrote 56 Medicare Part D claims for 46 patients. 61% of them were for generic drugs.
John Barr's Part D claims by kind of drug, 2024
- Generic34 claims61%
- Brand-name22 claims39%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How John T. Barr takes part in Medicare
John Barr 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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John T. Barr received $105 in industry payments in 2025
CMS Open Payments shows 2 general payments to John Barr from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $105.
Companies that paid John Barr the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
John T. Barr graduated from Pennsylvania College of Optometry
John Barr graduated from Pennsylvania College of Optometry in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John T. Barr'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 John T. Barr
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 T. Barr's NPI number?
John T. Barr's NPI number is 1497884191. It was assigned on March 6, 2007, and it is active in the NPI Registry.
What does John T. Barr specialize in?
John T. Barr is an optometrist in Chester, Maryland. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John T. Barr practice?
John Barr practices at 2108 Didonato Dr, Chester, MD 21619. John Barr's primary practice is Eastern Shore Family Foot Care in Chester, Maryland. Dmand AI also links John Barr to 1 physician office.
What is John T. Barr's office phone number?
The practice phone on file for John Barr is (410) 643-7141.
What is John T. Barr's medical license number?
John Barr holds Maryland license TA-1003.
Does John T. Barr accept Medicare?
Yes. CMS lists John Barr as accepting Medicare assignment.
How many Medicare patients does John T. Barr see?
CMS counts 544 Medicare patients who saw John Barr in 2024, with an average age of 76.
Where did John T. Barr go to medical school?
John Barr graduated from Pennsylvania College of Optometry in 1988.
Has John T. Barr received payments from drug or device companies?
CMS Open Payments shows $105 in general payments to John Barr from 1 company from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has John T. Barr been practicing?
John Barr graduated from medical school in 1988, 38 years ago.
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