Dr. Theodore N. Isseks, MD
- Medicare services, 2020
- 189
- Part D claims, 2020
- 617
- Industry payments
- $997
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 5518 State Route 55, Liberty, NY 12754
- Practice phone
- Call (845) 292-3011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Theodore N Isseks MD PC
Physician office · Liberty, New York
Find Dr. Isseks' 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.
Dr. Theodore N. Isseks is an ophthalmologist in New York
Dr. Isseks practices at Theodore N Isseks MD PC in Liberty, New York.
Dr. Isseks' NPI, 1164423448, was assigned on August 9, 2005. Dr. Isseks graduated from Tufts University School Of Medicine in 1972. Dr. Isseks holds New York license 117110.
- NPI
- 1164423448NPI Registry (opens in a new tab)
- NPI enumeration date
- August 9, 2005
- NPI status
- Active
- Practice phone
- (845) 292-3011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Theodore N. Isseks practices at Theodore N Isseks MD PC in Liberty, New York
Dr. Isseks' primary practice is Theodore N Isseks MD PC, at 5518 State Route 55, Liberty, NY 12754. The practice phone is (845) 292-3011.
- Theodore N Isseks MD PC5518 State Route 55, Liberty, NY 12754Phone(845) 292-3011
Source: Dmand AI Affiliation Data
Dr. Theodore N. Isseks is affiliated with 1 site of care
Dr. Isseks' primary practice is Theodore N Isseks MD PC in Liberty, New York.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Theodore N. Isseks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Isseks practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Theodore N Isseks MD PC | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Theodore N. Isseks is one of 1,467 ophthalmologists in New York
Ophthalmology is Dr. Isseks' primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Isseks is licensed in New York.
Specialties and state licenses
- Ophthalmology, New YorkPrimary
Ophthalmologists near Dr. Isseks
Counts of ophthalmologists 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
Dr. Theodore N. Isseks billed Medicare for 189 services in 2020
CMS data shows 189 Medicare services from Dr. Isseks across 4 procedure codes in 2020. Medicare paid $6,329 for them. Every service was in an office.
Dr. Isseks' Medicare services by type, 2019 to 2020
- 2019
- 2020
- Tests and treatments
- 2019: 1,6342020: 18988%
- Imaging
- 2019: 442020: 0100%
- Surgery
- 2019: 1,9242020: 0100%
- Office and hospital visits
- 2019: 742020: 0100%
Dr. Isseks compared with the New York median for ophthalmologists, 2020
- Dr. Isseks
- New York median
- Medicare services
- 189vs 1,25885% below
- Part D claims
- 617vs 647Close to median
Medians across 1,557 ophthalmologists in New York with Dmand AI profiles that report each measure.
Dr. Isseks' most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Isseks and other ophthalmologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Theodore N. Isseks' patients have a median age of 79
Across all payers, Dmand AI patient panel data puts Dr. Isseks' median patient age at 79, with 43% women.
Dr. Isseks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women43%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Theodore N. Isseks wrote 617 Medicare Part D claims in 2020
In 2020, Dr. Isseks wrote 617 Medicare Part D claims. They cover 9 drugs, with $46,878 in total drug cost. In 2019, CMS named 1,070 claims across 14 drugs.
Dr. Isseks' most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 1,0702020: 61742%
Drugs named by CMS: 9 in 2020, 14 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Theodore N. Isseks received $997 in industry payments from 2016 to 2019
CMS Open Payments shows 10 general payments to Dr. Isseks from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $396.
General payments to Dr. Isseks by program year, 2016 to 2019
Companies that paid Dr. Isseks the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Theodore N. Isseks graduated from Tufts University School Of Medicine
Dr. Isseks graduated from Tufts University School Of Medicine in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Theodore N. Isseks'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 Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 Dr. Theodore N. Isseks
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. Theodore N. Isseks' NPI number?
Dr. Theodore N. Isseks' NPI number is 1164423448. It was assigned on August 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Theodore N. Isseks?
Dr. Theodore N. Isseks is an ophthalmologist in New York. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Theodore N. Isseks practice?
Dr. Isseks practices at 5518 State Route 55, Liberty, NY 12754. Dr. Isseks' primary practice is Theodore N Isseks MD PC in Liberty, New York.
What is Dr. Theodore N. Isseks' office phone number?
The practice phone on file for Dr. Isseks is (845) 292-3011.
What is Dr. Theodore N. Isseks' medical license number?
Dr. Isseks holds New York license 117110.
Does Dr. Theodore N. Isseks accept Medicare?
Yes. CMS data shows Dr. Isseks billed Medicare for 189 services in 2020.
What services does Dr. Theodore N. Isseks bill to Medicare?
In 2020, Dr. Isseks' most billed Medicare services were eye exam or test (92012), eye exam or test (92014) and eye exam or test (92133).
Where did Dr. Theodore N. Isseks go to medical school?
Dr. Isseks graduated from Tufts University School Of Medicine in 1972.
What drugs does Dr. Theodore N. Isseks prescribe most?
In 2020 Medicare Part D data, Dr. Isseks' most prescribed drugs by claims were Latanoprost, Timolol Maleate and Dorzolamide-Timolol.
Has Dr. Theodore N. Isseks received payments from drug or device companies?
CMS Open Payments shows $997 in general payments to Dr. Isseks from 5 companies from 2016 to 2019. The largest total came from Allergan Inc.
How long has Dr. Theodore N. Isseks been practicing?
Dr. Isseks graduated from medical school in 1972, 54 years ago.
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