Dr. Lester S. Sielski, MD
- Medicare services, 2020
- 301
- Part D claims, 2021
- 1,364
- Industry payments
- $12,106
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 4239 Maple Rd, Amherst, NY 14226
- Practice phone
- Call (716) 835-2984
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lester S Sielski
Primary care practice · Amherst, New York
Find Dr. Sielski'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.
Dr. Lester S. Sielski is an internist in Buffalo, New York
Dr. Sielski practices at Lester S Sielski in Amherst, New York.
Dr. Sielski's NPI, 1669424081, was assigned on May 16, 2006. Dr. Sielski graduated from University at Buffalo School of Medicine in 1969. Dr. Sielski holds New York license 106124.
- NPI
- 1669424081NPI Registry (opens in a new tab)
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Practice phone
- (716) 835-2984
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lester S. Sielski practices in Amherst and Buffalo
Dr. Sielski's primary practice is Lester S Sielski, at 4239 Maple Rd, Amherst, NY 14226. The practice phone is (716) 835-2984. The NPI Registry lists Dr. Sielski's practice address as 3925 Sheridan Dr, Buffalo, NY 14226.
- Lester S SielskiPrimary4239 Maple Rd, Amherst, NY 14226Phone(716) 835-2984
- NPI Registry address3925 Sheridan Dr, Buffalo, NY 14226 · Erie CountyPhone(716) 835-2984
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Lester S. Sielski is affiliated with 1 site of care and 1 medical group
Dr. Sielski's primary practice is Lester S Sielski in Amherst, New York. Dmand AI also links Dr. Sielski to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Lester S. Sielski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sielski practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lester S Sielski | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lester S. Sielski is one of 9,643 internists in New York
Internal medicine is Dr. Sielski's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Sielski is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Sielski
Counts of internists 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. Lester S. Sielski billed Medicare for 301 services in 2020
CMS data shows 301 Medicare services from Dr. Sielski across 4 procedure codes in 2020. Medicare paid $14,133 for them. Every service was in an office.
Dr. Sielski's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 3402020: 23331%
- Other services
- 2019: 562020: 3930%
- Tests and treatments
- 2019: 552020: 2947%
Dr. Sielski compared with the New York median for internists, 2020
- Dr. Sielski
- New York median
- Medicare services
- 301vs 42629% below
- Part D claims
- 1,364vs 6222.2 times
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Sielski's 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. Sielski and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lester S. Sielski's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Sielski's median patient age at 73, with 46% women.
Dr. Sielski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women46%
- Men52%
Source: Dmand AI Patient Panel Data
Dr. Lester S. Sielski wrote 1,364 Medicare Part D claims in 2021
In 2021, Dr. Sielski wrote 1,364 Medicare Part D claims. They cover 45 drugs, with $156,204 in total drug cost. In 2020, CMS named 6,092 claims across 129 drugs.
Dr. Sielski's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 6,0922021: 1,36478%
Drugs named by CMS: 45 in 2021, 129 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Lester S. Sielski received $12,106 in industry payments from 2016 to 2020
CMS Open Payments shows 552 general payments to Dr. Sielski from 27 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,847.
General payments to Dr. Sielski by program year, 2016 to 2020
General payments to Dr. Sielski by kind, 2016 to 2020
- Food and beverage$12,051100%
- Education$560%
Companies that paid Dr. Sielski the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lester S. Sielski graduated from University at Buffalo School of Medicine
Dr. Sielski graduated from University at Buffalo School of Medicine in 1969.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lester S. Sielski'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Lester S. Sielski
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. Lester S. Sielski's NPI number?
Dr. Lester S. Sielski's NPI number is 1669424081. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lester S. Sielski?
Dr. Lester S. Sielski is an internist in Buffalo, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Lester S. Sielski practice?
Dr. Sielski practices at 4239 Maple Rd, Amherst, NY 14226. Dr. Sielski also practices at 3925 Sheridan Dr, Buffalo, NY 14226. Dr. Sielski's primary practice is Lester S Sielski in Amherst, New York. Dmand AI also links Dr. Sielski to 1 medical group.
What is Dr. Lester S. Sielski's office phone number?
The practice phone on file for Dr. Sielski is (716) 835-2984.
What is Dr. Lester S. Sielski's medical license number?
Dr. Sielski holds New York license 106124.
Does Dr. Lester S. Sielski accept Medicare?
Yes. CMS data shows Dr. Sielski billed Medicare for 301 services in 2020.
What services does Dr. Lester S. Sielski bill to Medicare?
In 2020, Dr. Sielski's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0008).
Where did Dr. Lester S. Sielski go to medical school?
Dr. Sielski graduated from University at Buffalo School of Medicine in 1969.
What drugs does Dr. Lester S. Sielski prescribe most?
In 2021 Medicare Part D data, Dr. Sielski's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Metoprolol Succinate.
Has Dr. Lester S. Sielski received payments from drug or device companies?
CMS Open Payments shows $12,106 in general payments to Dr. Sielski from 27 companies from 2016 to 2020. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Lester S. Sielski been practicing?
Dr. Sielski graduated from medical school in 1969, 57 years ago.
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