Marc Allen, DO
Internal Medicine Physician · Commack, NY
Marc Allen, DO is an internal medicine physician with a practice address in Commack, New York, and NPI 1356309892, issued on May 3, 2006. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Marc Allen
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 358 Veterans Memorial Highway, Commack, NY 11725
- Phone
- (631) 543-8844
- Enumerated
- May 3, 2006
- Entity
- Type 1 · individual
Verify Marc Allen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3.1 times the Medicare Part D claims of the average internal medicine physician in 2024
8,661 Medicare Part D claims for 741 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 18 claims were for opioids.
Most prescribed
- Atorvastatin Calcium714 claims
- Levothyroxine Sodium367 claims
- Amlodipine Besylate321 claims
- Losartan Potassium311 claims
- Metoprolol Succinate238 claims
- Albuterol Sulfate Hfa216 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $38.30
2 payments, mostly food and beverage; the largest payer was Lilly USA, LLC. The 65,274 providers of this specialty with any payment received $2,536.66 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital or facility affiliation
- Dr Marc Allen Medical PCSmithtown, NY
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
19 internal medicine physician records list a Commack practice address
They are 19 of the 1,341 NPPES records with a Commack practice address, and 13,725 internal medicine physician records in New York.
All 19 in Commack → All 13,725 in New York → Every provider in Commack →
Other internal medicine physician records in New York
- Deborah Aanonsen, D.O.Staten Island, NY1952395717
- Nivedita Aanur, M.D.New York, NY1982833471
- Jay Aaron, MDGreat Neck, NY1245332956
- Justin Aaron, MDNew York, NY1619243912
- Ahmad AbadiPoughkeepsie, NY1780258517
- Jamsheed Abadi, MDBrooklyn, NY1477537496
- Theophine Abakporo, M.D.Brooklyn, NY1972564813
- Antonieta Abarientos, MDNew Rochelle, NY1649285123
- Charles Abate, MDOssining, NY1720180003
- Vyachislav Abayev, M.D.Brooklyn, NY1437394574
Common questions
What is Marc Allen, DO's NPI number?
Marc Allen, DO's National Provider Identifier (NPI) is 1356309892, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc Allen, DO located?
The NPPES record lists a practice address at 358 Veterans Memorial Highway, Commack, NY, 11725. Phone: (631) 543-8844. Providers update this record themselves, so call before visiting.
How can I verify Marc Allen, DO's license?
Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marc Allen, DO prescribe under Medicare Part D?
In 2024, Marc Allen, DO had 8,661 Medicare Part D claims for 741 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.