Monika Mahajan
Internal Medicine Physician · Allentown, PA
Monika Mahajan is an internal medicine physician with a practice address in Allentown, Pennsylvania, and NPI 1255354866, issued on Jul 25, 2006. Check the license (Pennsylvania MD420619, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Monika Mahajan
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD420619 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1230 S Cedar Crest Blvd, Allentown, PA 18103
- Phone
- (610) 402-8950
- Enumerated
- Jul 25, 2006
- Record last updated
- Nov 19, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100325000838); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 1230 S Cedar Crest Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Diane Deangelo, CRNPAdult Health Nurse Practitioner1760422703
- Lorraine Dillon, PASurgical Physician Assistant1376651794
Verify Monika Mahajan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD420619Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% more Medicare Part D claims than the average internal medicine physician in 2024
5,975 Medicare Part D claims for 559 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 98 claims were for opioids.
Most prescribed
- Levothyroxine Sodium391 claims
- Losartan Potassium320 claims
- Atorvastatin Calcium284 claims
- Rosuvastatin Calcium235 claims
- Amlodipine Besylate228 claims
- Omeprazole218 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: $14.50
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- H2 Rehabilitation Extension Services LLCNazareth, PA
- Lehigh Valley Physician GroupAllentown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Monika Mahajan among 7,300 internal medicine physician records in Pennsylvania
Monika Mahajan is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 64% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1993 · median 2008 among the 4,208 with a school on file
- Record last updated2015 · 56% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
218 internal medicine physician records list a practice address in Allentown
They are 218 of the 5,904 NPPES records with a practice address in Allentown, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Allentown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jon Brndjar, D.O.Allentown, PA 181031477523934
- Ann Brotzman, DOAllentown, PA 181031306801337
- Joseph CandioAllentown, PA 181031104873967
- Amy Collis-Cowitch, MDAllentown, PA 181031356333744
- Thomas Doherty, MDAllentown, PA 181031992744965
- Maria Jones, MDAllentown, PA 181031962458240
- Robert Kovacs, M.D.Allentown, PA 181031558301838
- Thomas Lakata, D.O.Allentown, PA 181031407802580
Common questions
What is Monika Mahajan's NPI number?
Monika Mahajan's National Provider Identifier (NPI) is 1255354866, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Monika Mahajan located?
The NPPES record lists a practice address at 1230 S Cedar Crest Blvd, Allentown, PA, 18103. Phone: (610) 402-8950. Providers update this record themselves, so call before visiting.
How can I verify Monika Mahajan's license?
NPPES lists Pennsylvania license number MD420619, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Monika Mahajan prescribe under Medicare Part D?
In 2024, Monika Mahajan had 5,975 Medicare Part D claims for 559 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.