Janet L. Mahan, MD
Internal Medicine Physician · Tinton Falls, NJ
Janet L. Mahan, MD is an internal medicine physician with a practice address in Tinton Falls, New Jersey, and NPI 1780651448, issued on Mar 1, 2006. Check the license (New Jersey 25MAO4910600, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Janet L. Mahan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MAO4910600 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 3000 Essex RD, Tinton Falls, NJ 07753
- Phone
- (732) 643-2070
- Enumerated
- Mar 1, 2006
- Record last updated
- Feb 26, 2026
- Fax
- (732) 643-2015
- Medicare enrollment
- Enrolled (PECOS I20050104000614); accepts Medicare assignment
- Medical or professional school
- Howard University College Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 3000 Essex RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amy Gesualdi, DPMFoot & Ankle Surgery Podiatrist1154383230
Verify Janet L. Mahan 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 25MAO4910600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% more Medicare Part D claims than the average internal medicine physician in 2024
5,799 Medicare Part D claims for 394 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 133 claims were for opioids.
Most prescribed
- Atorvastatin Calcium277 claims
- Furosemide272 claims
- Amlodipine Besylate224 claims
- Levothyroxine Sodium219 claims
- Pantoprazole Sodium186 claims
- Eliquis175 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.
Bills Medicare through one group practice
- Erickson Health Medical Group OF New Jersey PCTinton Falls, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janet L. Mahan among 4,632 internal medicine physician records in New Jersey
Janet L. Mahan, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1985 · median 2000 among the 3,132 with a school on file
- 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).
26 internal medicine physician records list a practice address in Tinton Falls
They are 26 of the 395 NPPES records with a practice address in Tinton Falls, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Tinton Falls → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard Abramowitz, MDNeptune, NJ 077531609856434
- Kimberly Atienza, M.D.Neptune, NJ 077531881653848
- Kathleen Dowling, M.D.Neptune, NJ 077531093796211
- Mayer Ezer, MDNeptune, NJ 077531417925538
- Oliver Felibrico, MDNeptune, NJ 077531649249715
- Tong Hao, MDTinton Falls, NJ 077531023085263
- Donald Hazley, M.D.Tinton Falls, NJ 077531588631295
- Christian Kaunzinger, MDNeptune, NJ 077531912976010
Common questions
What is Janet L. Mahan, MD's NPI number?
Janet L. Mahan, MD's National Provider Identifier (NPI) is 1780651448, issued on Mar 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Janet L. Mahan, MD located?
The NPPES record lists a practice address at 3000 Essex RD, Tinton Falls, NJ, 07753. Phone: (732) 643-2070. Providers update this record themselves, so call before visiting.
How can I verify Janet L. Mahan, MD's license?
NPPES lists New Jersey license number 25MAO4910600, 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 Janet L. Mahan, MD prescribe under Medicare Part D?
In 2024, Janet L. Mahan, MD had 5,799 Medicare Part D claims for 394 beneficiaries; 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.