Mark Louis Mascari, DO
Addiction Medicine (Family Medicine) Physician · Mechanicsburg, PA
Mark Louis Mascari, DO is an addiction medicine (family medicine) physician with a practice address in Mechanicsburg, Pennsylvania, and NPI 1356316707, issued on Feb 21, 2006. Check the license (Pennsylvania OS006571L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mark Louis Mascari
- Credential
- DO
- Primary taxonomy
- Addiction Medicine (Family Medicine) Physician 207QA0401X
- License number
- OS006571L PA
Self-reported in NPPES; status is on the state search - Practice location
- 310 Lambs Gap RD, Mechanicsburg, PA 17050
- Phone
- (717) 795-9566
- Enumerated
- Feb 21, 2006
- Record last updated
- May 7, 2026
- Medicaid ID
- 001167064 PA
- Medicare enrollment
- Enrolled (PECOS I20250723000838); may accept Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1987
- Entity
- Type 1 · individual
8 nearest addiction medicine (family medicine) physician records → All 40 in Pennsylvania → Look up another NPI →
Also registered at 310 Lambs Gap RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Brow, DC, DACNB, CNS, CRNPFamily Nurse Practitioner1972687895
- Angela Brubaker, NP-CFamily Nurse Practitioner1295062933
- Collin GillChiropractor1952941981
- Margaret Groff, M.D.Family Medicine Physician1073506945
- Cassandra Haddad, CRNPFamily Nurse Practitioner1073801619
- Ross Marchegiani, DCNutrition Chiropractor1720551427
Verify Mark Louis Mascari in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS006571LCheck 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): 82.5 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).
Mark Louis Mascari among 40 addiction medicine (family medicine) physician records in Pennsylvania
Mark Louis Mascari, DO is one of 40 addiction medicine (family medicine) physician records with a practice address in Pennsylvania. 70% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 35% of these records are
- Graduated1987 · median 2000 among the 14 with a school on file
- Record last updated2026 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0401X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Medicine (Family Medicine) Physician providers in Pennsylvania
There are 40 addiction medicine (family medicine) physician records in Pennsylvania.
All 40 in Pennsylvania → Every provider in Mechanicsburg → Addiction Medicine (Family Medicine) Physician nationwide →
The 8 addiction medicine (family medicine) physician records with the nearest ZIP codes
- James Latronica, DOHershey, PA 170331730609157
- Robert Matylewicz, D.O.Wrightsville, PA 173681629057492
- John Symons, MDWilliamsburg, PA 166931659580348
- Christopher Carbo, DOErie, PA 165091346248291
- Amy Miles, D.O.Erie, PA 165081275708612
- Henry Dietrich, M.D.Williamsport, PA 177011922074046
- Gregory Famiglio, M.D.Williamsport, PA 177011992908503
- Todd Fausnaught, MDBloomsburg, PA 178151538137070
Common questions
What is Mark Louis Mascari, DO's NPI number?
Mark Louis Mascari, DO's National Provider Identifier (NPI) is 1356316707, issued on Feb 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Louis Mascari, DO located?
The NPPES record lists a practice address at 310 Lambs Gap RD, Mechanicsburg, PA, 17050. Phone: (717) 795-9566. Providers update this record themselves, so call before visiting.
How can I verify Mark Louis Mascari, DO's license?
NPPES lists Pennsylvania license number OS006571L, 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 Mark Louis Mascari, DO's MIPS final score?
The 2023 MIPS final score is 82.5 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.