Dr. Stephen A. Klein, MD
- Medicare services, 2024
- 2,609
- Medicare patients, 2024
- 206
- Part D claims, 2024
- 916
- Industry payments
- $1,234
- Affiliated sites
- 2
- Practice address
- 156 State Rte 59, Suffern, NY 10901
- Practice phone
- Call (845) 357-3838
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rockland Endocrine & Diabetes Services
Suffern, New York
Find Dr. Klein'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. Stephen A. Klein is an internist in Suffern, New York
Dr. Klein practices at Rockland Endocrine & Diabetes Services in Suffern, New York.
Dr. Klein's NPI, 1831257872, was assigned on December 4, 2006. Dr. Klein graduated from New York Medical College in 1980. Dr. Klein holds New York license 151797.
- NPI
- 1831257872NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244416311
- NPI enumeration date
- December 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (845) 357-3838
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen A. Klein practices at Rockland Endocrine & Diabetes Services in Suffern, New York
Dr. Klein's primary practice is Rockland Endocrine & Diabetes Services, at 156 State Rte 59, Suffern, NY 10901 in Rockland County. The practice phone is (845) 357-3838.
- Rockland Endocrine & Diabetes Services156 State Rte 59, Suffern, NY 10901 · Rockland CountyPhone(845) 357-3838
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephen A. Klein is affiliated with 3 sites of care and 1 medical group
Dr. Klein's primary practice is Rockland Endocrine & Diabetes Services in Suffern, New York. The medical group on file is Rockland Endocrine & Diabetes Services. Dmand AI also links Dr. Klein to 1 more group practice or clinic and 1 home health agency, each 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 Dr. Stephen A. Klein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klein practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rockland Endocrine & Diabetes Services | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen A. Klein is one of 9,643 internists in New York
Internal medicine is Dr. Klein's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Klein is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Klein
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 A. Klein billed Medicare for 2,609 services in 2024
CMS data shows 2,609 Medicare services from Dr. Klein across 23 procedure codes in 2024, for 206 Medicare patients. Medicare paid $85,974 for them. Every service was in an office.
Dr. Klein's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,0942024: 1,54141%
- Other services
- 2023: 2292024: 42485%
- Office and hospital visits
- 2023: 3852024: 32316%
- Surgery
- 2023: 2292024: 2353%
- Tests and treatments
- 2023: 632024: 8637%
Dr. Klein compared with the New York median for internists, 2024
- Dr. Klein
- New York median
- Medicare services
- 2,609vs 4266.1 times
- Medicare patients
- 206vs 15830% above
- Part D claims
- 652vs 622Close to median
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Klein'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Klein and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen A. Klein treated 206 Medicare patients in 2024, average age 77
CMS counts 206 Medicare patients who saw Dr. Klein in 2024. The largest group is 75 to 84, with 85 patients. 75% of them have high cholesterol, and 74% have high blood pressure. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Klein's median patient age at 69, with 47% women.
Dr. Klein's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Klein's Medicare patients by sex, 2024
- Women10651%
- Men10049%
Chronic conditions among Dr. Klein's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis45%
- Ischemic heart disease27%
- Diabetes22%
- Osteoporosis22%
- Cancer20%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women47%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen A. Klein wrote 916 Medicare Part D claims in 2024
In 2024, Dr. Klein wrote 916 Medicare Part D claims for 158 patients. 95% of them were for generic drugs. CMS names the drug for 652 of them, across 20 drugs with 11 or more claims each, at $9,328 in total drug cost. In 2023, CMS named 698 claims across 20 drugs.
Dr. Klein's Part D claims by kind of drug, 2024
- Generic871 claims95%
- Brand-name45 claims5%
Dr. Klein'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. Klein's Part D claims, 2024
- Antibiotics5%47 of 916 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: 6982024: 6527%
Drugs named by CMS: 20 in 2024, 20 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 A. Klein offers telehealth to Medicare patients
Dr. Klein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Klein as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Stephen A. Klein received $1,234 in industry payments from 2022 to 2025
CMS Open Payments shows 58 general payments to Dr. Klein from 26 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $182.
General payments to Dr. Klein by program year, 2022 to 2025
Companies that paid Dr. Klein the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen A. Klein graduated from New York Medical College
Dr. Klein graduated from New York Medical College in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen A. Klein'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 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) |
| 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 A. Klein
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 A. Klein's NPI number?
Dr. Stephen A. Klein's NPI number is 1831257872. It was assigned on December 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen A. Klein?
Dr. Stephen A. Klein is an internist in Suffern, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stephen A. Klein practice?
Dr. Klein practices at 156 State Rte 59, Suffern, NY 10901. Dr. Klein's primary practice is Rockland Endocrine & Diabetes Services in Suffern, New York. Dmand AI also links Dr. Klein to 1 group practice or clinic and 1 home health agency.
What is Dr. Stephen A. Klein's office phone number?
The practice phone on file for Dr. Klein is (845) 357-3838.
What is Dr. Stephen A. Klein's medical license number?
Dr. Klein holds New York license 151797.
What medical group is Dr. Stephen A. Klein part of?
Dr. Klein is linked to Rockland Endocrine & Diabetes Services.
Does Dr. Stephen A. Klein accept Medicare?
Yes. CMS data shows Dr. Klein billed Medicare for 2,609 services in 2024, and Dr. Klein accepts Medicare assignment.
Does Dr. Stephen A. Klein offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Klein as offering telehealth services.
How many Medicare patients does Dr. Stephen A. Klein see?
CMS counts 206 Medicare patients who saw Dr. Klein in 2024, with an average age of 77.
What services does Dr. Stephen A. Klein bill to Medicare?
In 2024, Dr. Klein's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and lab and pathology test (84550).
Show 4 more questionsShow fewer questions
Where did Dr. Stephen A. Klein go to medical school?
Dr. Klein graduated from New York Medical College in 1980.
What drugs does Dr. Stephen A. Klein prescribe most?
In 2024 Medicare Part D data, Dr. Klein's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Allopurinol.
Has Dr. Stephen A. Klein received payments from drug or device companies?
CMS Open Payments shows $1,234 in general payments to Dr. Klein from 26 companies from 2022 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Stephen A. Klein been practicing?
Dr. Klein graduated from medical school in 1980, 46 years ago.
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