Louis Hammerman, MD
Internal Medicine Physician · Boonton, NJ
Louis Hammerman, MD is an internal medicine physician with a practice address in Boonton, New Jersey, and NPI 1194724310, issued on Jul 19, 2005. Check the license (New Jersey 25MA03896400, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Louis Hammerman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA03896400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 360 Hawkins PL, Boonton, NJ 07005
- Phone
- (973) 334-3006
- Enumerated
- Jul 19, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (973) 402-9778
- Medicaid ID
- 1952901 NJ
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Verify Louis Hammerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA03896400Check 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
33 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate11 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.
Louis Hammerman among 4,632 internal medicine physician records in New Jersey
Louis Hammerman, MD is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 internal medicine physician records list a practice address in Boonton
They are 7 of the 261 NPPES records with a practice address in Boonton, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Boonton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Moya-Mendez, M.D.Boonton, NJ 070051659394153
- Patricia Renz, MDBoonton, NJ 070051245265875
- Jason Ricks, MDBoonton, NJ 070051932352812
- Mohammed Salem, M.DBoonton, NJ 070051336593649
- Anas SalemBoonton, NJ 070051942736475
- Philip Scaduto, MDBoonton, NJ 070051710912332
- Rupal Bhatt, MDFairfield, NJ 070041104830272
- Shirish Bhatt, M.D.Fairfield, NJ 070041982694741
Common questions
What is Louis Hammerman, MD's NPI number?
Louis Hammerman, MD's National Provider Identifier (NPI) is 1194724310, issued on Jul 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Louis Hammerman, MD located?
The NPPES record lists a practice address at 360 Hawkins PL, Boonton, NJ, 07005. Phone: (973) 334-3006. Providers update this record themselves, so call before visiting.
How can I verify Louis Hammerman, MD's license?
NPPES lists New Jersey license number 25MA03896400, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louis Hammerman, MD prescribe under Medicare Part D?
In 2024, Louis Hammerman, MD had 33 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.