Harrison Marx
Emergency Medicine Physician · Valley Stream, NY
Harrison Marx is an emergency medicine physician with a practice address in Valley Stream, New York, and NPI 1902367501, issued on Mar 27, 2019. Check the license (New York 316552, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Harrison Marx
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 316552 NY
Self-reported in NPPES; status is on the state search - Practice location
- 900 Franklin Ave, Valley Stream, NY 11580
- Phone
- (516) 256-6000
- Enumerated
- Mar 27, 2019
- Record last updated
- May 10, 2022
- Medicare enrollment
- Enrolled (PECOS I20220718000777); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2019
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at 900 Franklin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hijab Ahmad, PAPhysician Assistant1396425583
- Sara Ahmed, MDHospitalist Physician1720656002
- Mohammed AlzafaraniPharmacist1932973245
- Micah Angelitud, NPAcute Care Nurse Practitioner1144017047
- Paul Bamba, M.D.Emergency Medicine Physician1154470979
- Rathindra Banik, MDEmergency Medicine Physician1639102221
Verify Harrison Marx 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 316552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average emergency medicine physician in 2024
164 Medicare Part D claims for 121 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefdinir21 claims
- Ibuprofen13 claims
- Ondansetron Odt13 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.
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- North Shore-Lij Medical PCValley Stream, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harrison Marx among 5,025 emergency medicine physician records in New York
Harrison Marx is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 79% of them.
- NPI issued2019 · 79% of these records are older, 17% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2019 · median 2013 among the 3,232 with a school on file
- Record last updated2022 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 emergency medicine physician records list a practice address in Valley Stream
They are 30 of the 1,948 NPPES records with a practice address in Valley Stream, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Valley Stream → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Paul Bamba, M.D.Valley Stream, NY 115801154470979
- Rathindra Banik, MDValley Stream, NY 115801639102221
- Tania Castro, D.O.Valley Stream, NY 115801366670762
- Atul Chavda, DOValley Stream, NY 115801154354710
- Zong Chen, M.D.Valley Stream, NY 115801073803284
- Joyce David, M.D.Valley Stream, NY 115801750523411
- Nadia Denis, D.O.Valley Stream, NY 115801700046513
- Mark Fonrose, M.D.Valley Stream, NY 115801528113537
Common questions
What is Harrison Marx's NPI number?
Harrison Marx's National Provider Identifier (NPI) is 1902367501, issued on Mar 27, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Harrison Marx located?
The NPPES record lists a practice address at 900 Franklin Ave, Valley Stream, NY, 11580. Phone: (516) 256-6000. Providers update this record themselves, so call before visiting.
How can I verify Harrison Marx's license?
NPPES lists New York license number 316552, 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 Harrison Marx prescribe under Medicare Part D?
In 2024, Harrison Marx had 164 Medicare Part D claims for 121 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Harrison Marx's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.