Dr. Stephen Warshafsky, MD
- Medicare services, 2024
- 4,365
- Medicare patients, 2024
- 177
- Part D claims, 2024
- 1,773
- Publications
- 3
- Hospital affiliations
- 4
- Practice address
- 100 Woods Rd, Valhalla, NY 10595
- Practice phone
- Call (914) 493-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Warshafsky's professional email, personal email and mobile number
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Dr. Stephen Warshafsky is an internist in Valhalla, New York
Dr. Warshafsky practices at Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network.
Dr. Warshafsky's NPI, 1598846073, was assigned on October 18, 2006. Dr. Warshafsky graduated from New York Medical College in 1989. Dr. Warshafsky holds New York license 60188090.
- NPI
- 1598846073NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264344621
- NPI enumeration date
- October 18, 2006
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (914) 493-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen Warshafsky practices at Westchester Medical Center in Valhalla, New York
Dr. Warshafsky's primary practice is Westchester Medical Center, at 100 Woods Rd, Valhalla, NY 10595 in Westchester County. The practice phone is (914) 493-7000.
- Westchester Medical Center100 Woods Rd, Valhalla, NY 10595 · Westchester CountyPhone(914) 493-7000
Source: Dmand AI Affiliation Data
Dr. Stephen Warshafsky is affiliated with 5 sites of care
Dr. Warshafsky's primary practice is Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network. Dr. Warshafsky is also affiliated with White Plains Hospital. Dmand AI also links Dr. Warshafsky to 2 more hospitals and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephen Warshafsky's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Warshafsky practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Westchester Medical Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Westchester Medical Center Health Network and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Stephen Warshafsky is one of 9,643 internists in New York
Internal medicine is Dr. Warshafsky's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Warshafsky is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Warshafsky
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. Stephen Warshafsky billed Medicare for 4,365 services in 2024
CMS data shows 4,365 Medicare services from Dr. Warshafsky across 13 procedure codes in 2024, for 177 Medicare patients. Medicare paid $359,453 for them. Every service was in an office.
Dr. Warshafsky's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4,0792024: 4,0431%
- Drugs given in the office
- 2023: 1502024: 13013%
- Tests and treatments
- 2023: 1502024: 13013%
- Other services
- 2023: 922024: 6233%
Dr. Warshafsky compared with the New York median for internists, 2024
- Dr. Warshafsky
- New York median
- Medicare services
- 4,365vs 42610.2 times
- Medicare patients
- 177vs 15812% above
- Part D claims
- 1,265vs 6222.0 times
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Warshafsky'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen Warshafsky treated 177 Medicare patients in 2024, average age 76
CMS counts 177 Medicare patients who saw Dr. Warshafsky in 2024. The largest group is 75 to 84, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Warshafsky's median patient age at 70, with 33% women.
Dr. Warshafsky's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Warshafsky's Medicare patients by sex, 2024
- Women7844%
- Men9956%
Chronic conditions among Dr. Warshafsky's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes35%
- Chronic kidney disease34%
- Ischemic heart disease31%
- Anxiety28%
- Osteoporosis24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Warshafsky's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women33%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen Warshafsky wrote 1,773 Medicare Part D claims in 2024
In 2024, Dr. Warshafsky wrote 1,773 Medicare Part D claims for 129 patients. 91% of them were for generic drugs. CMS names the drug for 1,265 of them, across 45 drugs with 11 or more claims each, at $64,469 in total drug cost. In 2023, CMS named 1,300 claims across 44 drugs.
Dr. Warshafsky's Part D claims by kind of drug, 2024
- Generic1,605 claims91%
- Brand-name and other168 claims9%
Dr. Warshafsky's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Warshafsky's Part D claims, 2024
- Opioids1%17 of 1,773 claims
- Antibiotics3%60 of 1,773 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,3002024: 1,2653%
Drugs named by CMS: 45 in 2024, 44 in 2023.
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. Stephen Warshafsky offers telehealth to Medicare patients
CMS lists Dr. Warshafsky as offering telehealth.
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Stephen Warshafsky has 3 publications on record
Dmand AI links 3 papers to Dr. Warshafsky, published from 2020 to 2021. The most frequent topics are Doxycycline, Lyme Disease and Relapsing Fever. Dr. Warshafsky has published most often in Diagn Microbiol Infect Dis. Dr. Warshafsky's most frequent co-author is Russell Kamer, MD.
Topics Dr. Warshafsky writes about most
- Doxycycline
- Lyme Disease
- Relapsing Fever
- Syphilis
Dr. Warshafsky's most frequent co-authors
Recent publications by Dr. Warshafsky
Diagn Microbiol Infect Dis
JAMA Intern Med
See who Dr. Warshafsky researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Warshafsky works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephen Warshafsky received $2,375 in industry payments from 2016 to 2021
CMS Open Payments shows 25 general payments to Dr. Warshafsky from 7 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,794.
General payments to Dr. Warshafsky by program year, 2016 to 2021
Companies that paid Dr. Warshafsky the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen Warshafsky graduated from New York Medical College
Dr. Warshafsky graduated from New York Medical College in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen Warshafsky'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 DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Stephen Warshafsky
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. Stephen Warshafsky's NPI number?
Dr. Stephen Warshafsky's NPI number is 1598846073. It was assigned on October 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen Warshafsky?
Dr. Stephen Warshafsky is an internist in Valhalla, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stephen Warshafsky practice?
Dr. Warshafsky practices at 100 Woods Rd, Valhalla, NY 10595. Dr. Warshafsky's primary practice is Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network. Dmand AI also links Dr. Warshafsky to 2 hospitals and 1 physician office.
What is Dr. Stephen Warshafsky's office phone number?
The practice phone on file for Dr. Warshafsky is (914) 493-7000.
What is Dr. Stephen Warshafsky's medical license number?
Dr. Warshafsky holds New York license 60188090.
Which hospitals is Dr. Stephen Warshafsky affiliated with?
Dr. Warshafsky practices at Westchester Medical Center in Valhalla, New York. Dr. Warshafsky is also affiliated with White Plains Hospital. Dmand AI links Dr. Warshafsky to 2 more hospitals.
Does Dr. Stephen Warshafsky accept Medicare?
Yes. CMS data shows Dr. Warshafsky billed Medicare for 4,365 services in 2024.
Does Dr. Stephen Warshafsky offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Warshafsky as offering telehealth services.
How many Medicare patients does Dr. Stephen Warshafsky see?
CMS counts 177 Medicare patients who saw Dr. Warshafsky in 2024, with an average age of 76.
What services does Dr. Stephen Warshafsky bill to Medicare?
In 2024, Dr. Warshafsky's most billed Medicare services were care management and other visits (99489), office visit, established patient (99214) and care management and other visits (99487).
Show 6 more questionsShow fewer questions
Where did Dr. Stephen Warshafsky go to medical school?
Dr. Warshafsky graduated from New York Medical College in 1989.
What drugs does Dr. Stephen Warshafsky prescribe most?
In 2024 Medicare Part D data, Dr. Warshafsky's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Stephen Warshafsky received payments from drug or device companies?
CMS Open Payments shows $2,375 in general payments to Dr. Warshafsky from 7 companies from 2016 to 2021. The largest total came from Abbvie Inc.
How long has Dr. Stephen Warshafsky been practicing?
Dr. Warshafsky graduated from medical school in 1989, 37 years ago.
Does Dr. Stephen Warshafsky do research?
Dmand AI links 3 publications to Dr. Warshafsky, published from 2020 to 2021.
Who does Dr. Stephen Warshafsky publish with?
Dr. Warshafsky's most frequent co-authors are Russell Kamer, MD (1 shared paper).
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