Marc Aaron Stiefel, M.D.
Otolaryngology Physician · Doylestown, PA
Marc Aaron Stiefel, M.D. is an otolaryngology physician with a practice address in Doylestown, Pennsylvania, and NPI 1578583647, issued on Jul 20, 2006. Check the license (Pennsylvania MD428221, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Marc Aaron Stiefel
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- MD428221 PA
Self-reported in NPPES; status is on the state search - Practice location
- 599 W State St, Doylestown, PA 18901
- Phone
- (215) 345-5323
- Enumerated
- Jul 20, 2006
- Record last updated
- Mar 11, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (215) 345-5329
- Medicare enrollment
- Enrolled (PECOS I20060926000202); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2001
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 531 in Pennsylvania → Look up another NPI →
Also registered at 599 W State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Huda Abbas, MDHospitalist Physician1316187024
- Victor Araya, MDHepatology Physician1285693069
- David Boland, M.D.Interventional Cardiology Physician1235123886
- Kimberly Bruzas, M.S.Audiologist1164640983
- Alan Chang, MDGastroenterology Physician1912992330
- Asad Choudhury, MDHospitalist Physician1508325747
Verify Marc Aaron Stiefel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD428221Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average otolaryngology physician in 2024
566 Medicare Part D claims for 244 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 12 claims were for opioids.
Most prescribed
- Omeprazole74 claims
- Fluticasone Propionate63 claims
- Azelastine Hcl38 claims
- Ipratropium Bromide38 claims
- Prednisone29 claims
- Montelukast Sodium27 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 practice group's MIPS final score for 2023 (Medicare payment program): 95.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $129.64
7 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. 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
- Pinnacle Ent Alliance LLCDoylestown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Aaron Stiefel among 531 otolaryngology physician records in Pennsylvania
Marc Aaron Stiefel, M.D. 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 53% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2001 · median 2002 among the 355 with a school on file
- Record last updated2011 · 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 Doylestown → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Daniel EichornDoylestown, PA 189011588291009
- Douglas Nadel, MDDoylestown, PA 189011407875503
- Brent Rosen, D.O.Doylestown, PA 189021386815041
- Walter Coombe, MDSayre, PA 188401639196454
- William Dichtel, M.D.Sayre, PA 188401982609061
- John Frodel, M.D.Sayre, PA 188401598732562
- Kirk Tolhurst, MDSayre, PA 188401669447447
- Kenneth Einhorn, M.D.Abington, PA 190011174565923
Common questions
What is Marc Aaron Stiefel, M.D.'s NPI number?
Marc Aaron Stiefel, M.D.'s National Provider Identifier (NPI) is 1578583647, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc Aaron Stiefel, M.D. located?
The NPPES record lists a practice address at 599 W State St, Doylestown, PA, 18901. Phone: (215) 345-5323. Providers update this record themselves, so call before visiting.
How can I verify Marc Aaron Stiefel, M.D.'s license?
NPPES lists Pennsylvania license number MD428221, 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 Marc Aaron Stiefel, M.D. prescribe under Medicare Part D?
In 2024, Marc Aaron Stiefel, M.D. had 566 Medicare Part D claims for 244 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Marc Aaron Stiefel, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.8 of 100, reported for the practice group. 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.