Marc Joseph Clapper, D.O.
Anatomic Pathology & Clinical Pathology Physician · Johnstown, PA
Marc Joseph Clapper, D.O. is an anatomic pathology & clinical pathology physician with a practice address in Johnstown, Pennsylvania, and NPI 1881711182, issued on Mar 23, 2007. Check the license (Pennsylvania OS014283, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Marc Joseph Clapper
- Credential
- D.O.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License numbers
- OS014283 PA
OT011820 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1086 Franklin St, Johnstown, PA 15905
- Phone
- (814) 534-9892
- Enumerated
- Mar 23, 2007
- Record last updated
- Jan 29, 2023
- Fax
- (814) 534-9137
- Medicare enrollment
- Enrolled (PECOS I20120709000065); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2006
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 716 in Pennsylvania → Look up another NPI →
Also registered at 1086 Franklin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Suzanne Abuhadba, DOEmergency Medicine Physician1437834579
- Nuzhat Ahmad, MDFamily Medicine Physician1154007342
Verify Marc Joseph Clapper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS014283Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 77.5 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).
Bills Medicare through one group practice
- University OF Pittsburgh PhysiciansJohnstown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Joseph Clapper among 716 anatomic pathology & clinical pathology physician records in Pennsylvania
Marc Joseph Clapper, D.O. is one of 716 anatomic pathology & clinical pathology physician records with a practice address in Pennsylvania. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 46% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2006 · median 2001 among the 388 with a school on file
- Record last updated2023 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Pennsylvania
There are 716 anatomic pathology & clinical pathology physician records in Pennsylvania.
All 716 in Pennsylvania → Every provider in Johnstown → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Shweta Das, M.D.Johnstown, PA 159051942424684
- Anuradha Dharbhamulla, M.D.Johnstown, PA 159051760529622
- Zhicheng Mo, M.D., PH.D.Johnstown, PA 159051134382872
- James Pisano, MDJohnstown, PA 159051609803147
- Lian Qian, M.D.Johnstown, PA 159051104822006
- Zhuo Wang, M.D.Johnstown, PA 159051013149764
- Huaitao Yang, M.D., PH.D.Johnstown, PA 159051528271236
- Dongjiu Ye, M.D., PH.D.Johnstown, PA 159051598980948
Common questions
What is Marc Joseph Clapper, D.O.'s NPI number?
Marc Joseph Clapper, D.O.'s National Provider Identifier (NPI) is 1881711182, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marc Joseph Clapper, D.O. located?
The NPPES record lists a practice address at 1086 Franklin St, Johnstown, PA, 15905. Phone: (814) 534-9892. Providers update this record themselves, so call before visiting.
How can I verify Marc Joseph Clapper, D.O.'s license?
NPPES lists Pennsylvania license number OS014283, 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.
What is Marc Joseph Clapper, D.O.'s MIPS final score?
The 2023 MIPS final score is 77.5 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.