Dr. Alexander Michael Stessin, MD, PhD

  • Stony Brook, NY
  • Radiation oncologist
NPI1598992802PAC ID6204159890
Medicare services, 2024
1,659
Medicare patients, 2024
192
Part D claims, 2024
25
Publications
22
Clinical trials
3
Practice address
Health Sciences Center Suny, Stony Brook, NY 11794
Practice phone
Call (631) 444-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Stony Brook University Hospital

Hospital · Stony Brook, New York

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Dr. Alexander Michael Stessin is a radiation oncologist in Stony Brook, New York

Dr. Stessin practices at Stony Brook University Hospital in Stony Brook, New York, part of Stony Brook University.

Dr. Stessin's NPI, 1598992802, was assigned on June 12, 2009. Dr. Stessin holds New York license 274556.

NPI and contact details
Medicare PAC ID
6204159890
NPI enumeration date
June 12, 2009
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(631) 444-4000
Professional email
Get email
Personal email
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Mobile number
Get number
Sex
Male
Estimated age
43
Medical school graduation
2009

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Alexander Michael Stessin practices at 2 locations in Stony Brook, New York

Dr. Stessin's primary practice is Stony Brook University Hospital, at Health Sciences Center Suny, Stony Brook, NY 11794 in Suffolk County. The practice phone is (631) 444-4000. Dr. Stessin also practices at Stony Brook University Hospital, 101 Nicolls Rd, Stony Brook, NY 11794.

  • Stony Brook University HospitalPrimary
    Health Sciences Center Suny, Stony Brook, NY 11794 · Suffolk CountyPhone(631) 444-4000
  • Stony Brook University Hospital
    101 Nicolls Rd, Stony Brook, NY 11794 · Suffolk CountyPhone(631) 444-4100

Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data

Dr. Alexander Michael Stessin is affiliated with 2 sites of care and 1 medical group

Dr. Stessin's primary practice is Stony Brook University Hospital in Stony Brook, New York, part of Stony Brook University. The medical group on file is Stony Brook Radiation Oncology. Dmand AI also links Dr. Stessin to 1 more clinical lab, named with a free account.

See all 3 affiliations for Dr. Stessin

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Alexander Michael Stessin's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stessin practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Stony Brook University HospitalAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dmand AI maps EHR vendors, IT decision makers and buying committees across Stony Brook University and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Alexander Michael Stessin is one of 385 radiation oncologists in New York

Radiation oncology is Dr. Stessin's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Stessin is licensed in New York.

Specialties and state licenses

  • Radiation oncology, New YorkPrimaryLicense 274556 · taxonomy 2085R0001X

Radiation oncologists near Dr. Stessin

Counts of radiation oncologists 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. Alexander Michael Stessin billed Medicare for 1,659 services in 2024

CMS data shows 1,659 Medicare services from Dr. Stessin across 15 procedure codes in 2024, for 192 Medicare patients. Medicare paid $127,822 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,659
Medicare patients192
Paid by Medicare$127,822
Procedure codes15

Dr. Stessin's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 9422024: 8609%
Other services
2023: 6812024: 54420%
Office and hospital visits
2023: 2422024: 2555%

Dr. Stessin compared with the New York median for radiation oncologists, 2024

  • Dr. Stessin
  • New York median
Medicare services
1,659vs 1,05457% above
Medicare patients
192vs 16020% above
Part D claims
11vs 3669% below

Medians across 368 radiation oncologists in New York with Dmand AI profiles that report each measure.

Dr. Stessin's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Stessin

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Alexander Michael Stessin treated 192 Medicare patients in 2024, average age 75

CMS counts 192 Medicare patients who saw Dr. Stessin in 2024. The largest group is 65 to 74, with 81 patients. 75% of them have cancer, and 75% have high blood pressure. 14% are also on Medicaid. Their average risk score is 1.59, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Stessin's median patient age at 65, with 75% women.

Medicare patients, 2024192
Average age75
Average risk score1.59
Also on Medicaid14%

Dr. Stessin's Medicare patients by age, 2024

Dr. Stessin's Medicare patients by sex, 2024

  • Women14374%
  • Men4926%

Chronic conditions among Dr. Stessin's Medicare patients, 2024

  1. Cancer75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Arthritis44%
  5. Diabetes33%
  6. Osteoporosis29%
  7. Ischemic heart disease28%
  8. Anxiety27%

Share of Medicare patients with each condition. A patient can have several.

Dr. Stessin's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 65

Patient panel by sex, all payers

  • Women75%
  • Men23%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Alexander Michael Stessin wrote 25 Medicare Part D claims in 2024

In 2024, Dr. Stessin wrote 25 Medicare Part D claims for 18 patients. 92% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $264 in total drug cost.

Part D claims, 202425
Drugs named by CMS1
Total drug cost$264
Part D patients18

Dr. Stessin's Part D claims by kind of drug, 2024

  • Generic23 claims92%
  • Brand-name and other2 claims8%

Dr. Stessin's most prescribed drugs by claims, 2023

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

See all prescribing by Dr. Stessin

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Alexander Michael Stessin offers telehealth to Medicare patients

Dr. Stessin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Stessin as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Alexander Michael Stessin has 22 publications on record

Dmand AI links 22 papers to Dr. Stessin, published from 2012 to 2024. 2015 was the busiest year, with 2. The most frequent topics are SEER Program, Radiotherapy, Adjuvant and Breast Neoplasms. Dr. Stessin has published most often in Int J Radiat Oncol Biol Phys. Dr. Stessin's most frequent co-authors are Samuel Ryu, MD, John Andrew Boockvar, MD and Joseph A. Miccio, MD.

Papers22
Years published2012 to 2024

Dr. Stessin's papers by year, 2013 to 2024

Topics Dr. Stessin writes about most

  • SEER Program
  • Radiotherapy, Adjuvant
  • Breast Neoplasms
  • Brain Neoplasms
  • Cranial Irradiation
  • Disease Models, Animal
  • Fingolimod Hydrochloride
  • Hippocampus

Dr. Stessin's most frequent co-authors

Recent publications by Dr. Stessin

See all 22 publications and co-authors

See who Dr. Stessin researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Stessin works with, so you can find a warm path to the right radiation oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Alexander Michael Stessin has worked on 3 clinical trials

Dmand AI links Dr. Stessin to 3 clinical trials, 3 of them phase 3 studies. 3 are still active or recruiting. Conditions studied include Carcinoma, Hepatocellular, Carcinoma, Lobular and Pancreatic Intraductal Neoplasms.

Conditions in Dr. Stessin's trials

  • Carcinoma, Hepatocellular
  • Carcinoma, Lobular
  • Pancreatic Intraductal Neoplasms
  • Carcinoma, Ductal, Breast
  • Liver Neoplasms

Investigators on the most trials with Dr. Stessin

Recent clinical trials with Dr. Stessin

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Alexander Michael Stessin received $171 in industry payments in 2016

CMS Open Payments shows 1 general payment to Dr. Stessin from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Brainlab, Inc. paid the most, $171.

Companies that paid Dr. Stessin the most, 2016 to 2016

Share is of all general payments to this clinician.

See all payments to Dr. Stessin

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Alexander Michael Stessin's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Alexander Michael Stessin

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. Alexander Michael Stessin's NPI number?

Dr. Alexander Michael Stessin's NPI number is 1598992802. It was assigned on June 12, 2009, and it is active in the NPI Registry.

What kind of doctor is Dr. Alexander Michael Stessin?

Dr. Alexander Michael Stessin is a radiation oncologist in Stony Brook, New York. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Dr. Alexander Michael Stessin practice?

Dr. Stessin practices at Health Sciences Center Suny, Stony Brook, NY 11794. Dr. Stessin also practices at 101 Nicolls Rd, Stony Brook, NY 11794. Dr. Stessin's primary practice is Stony Brook University Hospital in Stony Brook, New York, part of Stony Brook University. Dmand AI also links Dr. Stessin to 1 clinical lab.

What is Dr. Alexander Michael Stessin's office phone number?

The practice phone on file for Dr. Stessin is (631) 444-4000.

What is Dr. Alexander Michael Stessin's medical license number?

Dr. Stessin holds New York license 274556.

Which hospitals is Dr. Alexander Michael Stessin affiliated with?

Dr. Stessin practices at Stony Brook University Hospital in Stony Brook, New York.

What medical group is Dr. Alexander Michael Stessin part of?

Dr. Stessin is linked to Stony Brook Radiation Oncology.

Does Dr. Alexander Michael Stessin accept Medicare?

Yes. CMS data shows Dr. Stessin billed Medicare for 1,659 services in 2024, and Dr. Stessin accepts Medicare assignment.

Does Dr. Alexander Michael Stessin offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Stessin as offering telehealth services.

How many Medicare patients does Dr. Alexander Michael Stessin see?

CMS counts 192 Medicare patients who saw Dr. Stessin in 2024, with an average age of 75.

Show 6 more questionsShow fewer questions

What services does Dr. Alexander Michael Stessin bill to Medicare?

In 2024, Dr. Stessin's most billed Medicare services were medicare service (G6002), radiation oncology (77300) and radiation oncology (77427).

What drugs does Dr. Alexander Michael Stessin prescribe most?

In 2023 Medicare Part D data, Dr. Stessin's most prescribed drugs by claims were Mometasone Furoate.

Has Dr. Alexander Michael Stessin received payments from drug or device companies?

CMS Open Payments shows $171 in general payments to Dr. Stessin from 1 company from 2016 to 2016. The largest total came from Brainlab, Inc.

How long has Dr. Alexander Michael Stessin been practicing?

Dr. Stessin graduated from medical school in 2009, 17 years ago.

Does Dr. Alexander Michael Stessin do research?

Dmand AI links 22 publications to Dr. Stessin, published from 2012 to 2024. Dr. Stessin has worked on 3 clinical trials.

Who does Dr. Alexander Michael Stessin publish with?

Dr. Stessin's most frequent co-authors are Samuel Ryu, MD (11 shared papers), John Andrew Boockvar, MD (3 shared papers) and Joseph A. Miccio, MD (3 shared papers).

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