Dr. Mark A. Singer, DO
- Medicare services, 2024
- 10,423
- Medicare patients, 2024
- 1,054
- Part D claims, 2024
- 4,801
- Industry payments
- $191
- Affiliated sites
- 6
- Practice address
- 5 Cuba Hill Road, Greenlawn, NY 11740
- Practice phone
- Call (631) 628-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mount Sinai Doctors-Greenlawn
Mammography / Breast Imaging Center · Greenlawn, New York
Find Dr. Singer's professional email, personal email and mobile number
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Dr. Mark A. Singer is an internist in Greenlawn, New York
Dr. Singer practices at Mount Sinai Doctors-Greenlawn in Greenlawn, New York.
Dr. Singer's NPI, 1477569416, was assigned on July 31, 2006. Dr. Singer graduated from NYIT College Of Osteopathic Medicine in 1995. Dr. Singer holds New York license 207815-1.
- NPI
- 1477569416NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315126620
- NPI enumeration date
- July 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (631) 628-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark A. Singer practices at Mount Sinai Doctors-Greenlawn in Greenlawn, New York
Dr. Singer's primary practice is Mount Sinai Doctors-Greenlawn, at 5 Cuba Hill Road, Greenlawn, NY 11740. The practice phone is (631) 628-5000.
- Mount Sinai Doctors-Greenlawn5 Cuba Hill Road, Greenlawn, NY 11740Phone(631) 628-5000
Source: Dmand AI Affiliation Data
Dr. Mark A. Singer is affiliated with 6 sites of care and 1 medical group
Dr. Singer's primary practice is Mount Sinai Doctors-Greenlawn in Greenlawn, New York. The medical group on file is Mount Sinai Doctors Long Island. Dmand AI also links Dr. Singer to 4 more home health agencies and 1 group practice or clinic, each named with a free account. Dr. Singer's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark A. Singer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Singer practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mount Sinai Doctors-Greenlawn | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark A. Singer is one of 9,643 internists in New York
Internal medicine is Dr. Singer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Singer is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Singer
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. Mark A. Singer billed Medicare for 10,423 services in 2024
CMS data shows 10,423 Medicare services from Dr. Singer across 35 procedure codes in 2024, for 1,054 Medicare patients. Medicare paid $445,964 for them. Every service was in an office.
Dr. Singer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 5,7452024: 4,98213%
- Office and hospital visits
- 2023: 1,9072024: 1,8304%
- Other services
- 2023: 1,2342024: 1,78945%
- Surgery
- 2023: 1,1692024: 1,0738%
- Tests and treatments
- 2023: 9232024: 74919%
Dr. Singer compared with the New York median for internists, 2024
- Dr. Singer
- New York median
- Medicare services
- 10,423vs 42624.5 times
- Medicare patients
- 1,054vs 1586.7 times
- Part D claims
- 4,397vs 6227.1 times
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Singer'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. Singer and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark A. Singer treated 1,054 Medicare patients in 2024, average age 76
CMS counts 1,054 Medicare patients who saw Dr. Singer in 2024. The largest group is 65 to 74, with 457 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 3% are also on Medicaid. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Singer's median patient age at 63, with 58% women.
Dr. Singer's Medicare patients by age, 2024
Dr. Singer's Medicare patients by sex, 2024
- Women59356%
- Men46144%
Chronic conditions among Dr. Singer's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis48%
- Ischemic heart disease31%
- Anxiety23%
- Diabetes22%
- Chronic kidney disease21%
- Cancer19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Singer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark A. Singer wrote 4,801 Medicare Part D claims in 2024
In 2024, Dr. Singer wrote 4,801 Medicare Part D claims for 653 patients. 95% of them were for generic drugs. CMS names the drug for 4,397 of them, across 70 drugs with 11 or more claims each, at $127,409 in total drug cost. In 2023, CMS named 4,787 claims across 76 drugs.
Dr. Singer's Part D claims by kind of drug, 2024
- Generic4,581 claims95%
- Brand-name and other220 claims5%
Dr. Singer'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. Singer's Part D claims, 2024
- Antibiotics1%66 of 4,801 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: 4,7872024: 4,3978%
Drugs named by CMS: 70 in 2024, 76 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. Mark A. Singer offers telehealth to Medicare patients
Dr. Singer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Singer as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark A. Singer received $191 in industry payments from 2018 to 2023
CMS Open Payments shows 4 general payments to Dr. Singer from 3 drug and device companies from 2018 to 2023. Food and beverage make up the largest share, 69% of the total. Abbott Laboratories paid the most, $108.
General payments to Dr. Singer by program year, 2018 to 2023
General payments to Dr. Singer by kind, 2018 to 2023
- Food and beverage$13369%
- Debt forgiveness$5931%
Companies that paid Dr. Singer the most, 2018 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark A. Singer graduated from NYIT College Of Osteopathic Medicine
Dr. Singer graduated from NYIT College Of Osteopathic Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark A. Singer'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) |
| 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. Mark A. Singer
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. Mark A. Singer's NPI number?
Dr. Mark A. Singer's NPI number is 1477569416. It was assigned on July 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark A. Singer?
Dr. Mark A. Singer is an internist in Greenlawn, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark A. Singer practice?
Dr. Singer practices at 5 Cuba Hill Road, Greenlawn, NY 11740. Dr. Singer's primary practice is Mount Sinai Doctors-Greenlawn in Greenlawn, New York. Dmand AI also links Dr. Singer to 4 home health agencies and 1 group practice or clinic.
What is Dr. Mark A. Singer's office phone number?
The practice phone on file for Dr. Singer is (631) 628-5000.
What is Dr. Mark A. Singer's medical license number?
Dr. Singer holds New York license 207815-1.
What medical group is Dr. Mark A. Singer part of?
Dr. Singer is linked to Mount Sinai Doctors Long Island.
Does Dr. Mark A. Singer accept Medicare?
Yes. CMS data shows Dr. Singer billed Medicare for 10,423 services in 2024, and Dr. Singer accepts Medicare assignment.
Does Dr. Mark A. Singer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Singer as offering telehealth services.
How many Medicare patients does Dr. Mark A. Singer see?
CMS counts 1,054 Medicare patients who saw Dr. Singer in 2024, with an average age of 76.
What services does Dr. Mark A. Singer bill to Medicare?
In 2024, Dr. Singer's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and lab and pathology test (80061).
Show 4 more questionsShow fewer questions
Where did Dr. Mark A. Singer go to medical school?
Dr. Singer graduated from NYIT College Of Osteopathic Medicine in 1995.
What drugs does Dr. Mark A. Singer prescribe most?
In 2024 Medicare Part D data, Dr. Singer's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Amlodipine Besylate.
Has Dr. Mark A. Singer received payments from drug or device companies?
CMS Open Payments shows $191 in general payments to Dr. Singer from 3 companies from 2018 to 2023. The largest total came from Abbott Laboratories.
How long has Dr. Mark A. Singer been practicing?
Dr. Singer graduated from medical school in 1995, 31 years ago.
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