Mark Nellenbach, PA-C
Physician Assistant · Cleveland, OH
Mark Nellenbach, PA-C is a physician assistant with a practice address in Cleveland, Ohio, and NPI 1699258244, issued on Sep 10, 2018. Check the license with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Nellenbach
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 11100 Euclid Ave, Cleveland, OH 44106
- Phone
- (216) 844-4951
- Enumerated
- Sep 10, 2018
- Record last updated
- Sep 10, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20181130000333); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 5,325 in Ohio → Look up another NPI →
Also registered at 11100 Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Evi Abada, MD, MSAnatomic Pathology & Clinical Pathology Physician1528563541
- Mujjahid Abbas, MDSurgery Physician1861632994
- Aleena Abbasi, MDStudent in an Organized Health Care Education/Training Program1710737614
- Julia Abbass, M.D.Diagnostic Radiology Physician1730130089
- Araam AbboudStudent in an Organized Health Care Education/Training Program1518800135
- Salim-Tamuz Abboud, MDDiagnostic Radiology Physician1477845311
Verify Mark Nellenbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Ohio board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average physician assistant in 2024
228 Medicare Part D claims for 183 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone36 claims
- Cephalexin34 claims
- Amoxicillin-Clavulanate Potass22 claims
- Doxycycline Hyclate15 claims
- Paxlovid14 claims
- Nitrofurantoin Mono-Macro11 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): 79.5 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).
One hospital affiliation
- Cleveland ClinicMedina, OH · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mark Nellenbach among 5,325 physician assistant records in Ohio
Mark Nellenbach, PA-C is one of 5,325 physician assistant records with a practice address in Ohio. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 47% of them.
- NPI issued2018 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2018 · median 2019 among the 3,621 with a school on file
- Record last updated2018 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
720 physician assistant records list a practice address in Cleveland
They are 720 of the 30,748 NPPES records with a practice address in Cleveland, and 5,325 physician assistant records in Ohio.
All 5,325 in Ohio → Every provider in Cleveland → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Loren Allbaugh, PA-CCleveland, OH 441061245233931
- Marc Cymes, PA-CCleveland, OH 441061982616736
- Kristen Haun, PA-CCleveland, OH 441061568439487
- Victoria Lipnickey, PACleveland, OH 441061861456782
- Brenda Loffelmann, P.A.-C.Cleveland, OH 441061770699357
- Terri Long, PACleveland, OH 441061619073830
- Dennis Olivares, PA-CCleveland, OH 441061730276239
- Richard Pulice, PA-CCleveland, OH 441061467428664
Common questions
What is Mark Nellenbach, PA-C's NPI number?
Mark Nellenbach, PA-C's National Provider Identifier (NPI) is 1699258244, issued on Sep 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Mark Nellenbach, PA-C located?
The NPPES record lists a practice address at 11100 Euclid Ave, Cleveland, OH, 44106. Phone: (216) 844-4951. Providers update this record themselves, so call before visiting.
How can I verify Mark Nellenbach, PA-C's license?
Search the Ohio board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Nellenbach, PA-C prescribe under Medicare Part D?
In 2024, Mark Nellenbach, PA-C had 228 Medicare Part D claims for 183 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Mark Nellenbach, PA-C's MIPS final score?
The 2023 MIPS final score is 79.5 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.