Howard Knoll, DO
Internal Medicine Physician · Massapequa, NY
Howard Knoll, DO is an internal medicine physician with a practice address in Massapequa, New York, and NPI 1700994589, issued on Aug 29, 2006. Check the license (New York 175948, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Howard Knoll
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 175948 NY
Self-reported in NPPES; status is on the state search - Practice location
- 896 N Broadway, Massapequa, NY 11758
- Phone
- (516) 798-5552
- Enumerated
- Aug 29, 2006
- Entity
- Type 1 · individual
Also registered at 896 N Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Alexander, DOInternal Medicine Physician1912956301
Verify Howard Knoll in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 175948Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
14 Medicare Part D claims, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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: $125.00
1 payment, mostly food and beverage; the largest payer was Amgen Inc.. 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.
26 internal medicine physician records list a Massapequa practice address
They are 26 of the 1,195 NPPES records with a Massapequa practice address, and 13,725 internal medicine physician records in New York.
All 26 in Massapequa → All 13,725 in New York → Every provider in Massapequa →
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 Howard Knoll, DO's NPI number?
Howard Knoll, DO's National Provider Identifier (NPI) is 1700994589, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Howard Knoll, DO located?
The NPPES record lists a practice address at 896 N Broadway, Massapequa, NY, 11758. Phone: (516) 798-5552. Providers update this record themselves, so call before visiting.
How can I verify Howard Knoll, DO's license?
NPPES lists New York license number 175948, as entered by the provider. 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 Howard Knoll, DO prescribe under Medicare Part D?
In 2024, Howard Knoll, DO had 14 Medicare Part D claims; 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.