Isabelle Marie Gengler, MD
Otolaryngology Physician · Allentown, PA
Isabelle Marie Gengler, MD is an otolaryngology physician with a practice address in Allentown, Pennsylvania, and NPI 1689134272, issued on Mar 21, 2019. Check the license (Pennsylvania MD492164, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Isabelle Marie Gengler
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License numbers
- MD492164 PA
D0099652 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1245 S Cedar Crest Blvd Ste 101, Allentown, PA 18103
- Phone
- (484) 957-2770
- Enumerated
- Mar 21, 2019
- Record last updated
- Sep 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20251013000746); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 531 in Pennsylvania → Look up another NPI →
Also registered at 1245 S Cedar Crest Blvd Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mona Al Rammah, MDOtology & Neurotology Physician1154156990
- Lauren BaydaMedical Physician Assistant1336095256
- Edith Dong, AUDAudiologist1174319123
- Caitlin Patt, PA-CMedical Physician Assistant1033899695
Verify Isabelle Marie Gengler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD492164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average otolaryngology physician in 2024
73 Medicare Part D claims for 36 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% 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: $328.98
6 payments; by number, the most common kind was food and beverage; the largest payer was DePuy Synthes Sales Inc. The 6,429 providers of this specialty with any payment received $1,922.50 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 one group practice
- Lehigh Valley Physician GroupAllentown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isabelle Marie Gengler among 531 otolaryngology physician records in Pennsylvania
Isabelle Marie Gengler, MD is one of 531 otolaryngology physician records with a practice address in Pennsylvania. 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 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2007 · median 2002 among the 355 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Pennsylvania
There are 531 otolaryngology physician records in Pennsylvania.
All 531 in Pennsylvania → Every provider in Allentown → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Gabrianna AndrewsAllentown, PA 181031902738339
- George Jarrouj, MDAllentown, PA 181031689416323
- Michael McGlone, MDAllentown, PA 181031366282212
- Edward Tomkin, D.O.Allentown, PA 181031952383861
- Keith Conti, MDAllentown, PA 181041194395350
- Robert Dedio, MDAllentown, PA 181041073590345
- Hilary Koprowski, MDAllentown, PA 181041144353525
- Paul Lemberg, MDAllentown, PA 181041346227691
Common questions
What is Isabelle Marie Gengler, MD's NPI number?
Isabelle Marie Gengler, MD's National Provider Identifier (NPI) is 1689134272, issued on Mar 21, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Isabelle Marie Gengler, MD located?
The NPPES record lists a practice address at 1245 S Cedar Crest Blvd Ste 101, Allentown, PA, 18103. Phone: (484) 957-2770. Providers update this record themselves, so call before visiting.
How can I verify Isabelle Marie Gengler, MD's license?
NPPES lists Pennsylvania license number MD492164, 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 Isabelle Marie Gengler, MD prescribe under Medicare Part D?
In 2024, Isabelle Marie Gengler, MD had 73 Medicare Part D claims for 36 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.