Clarence Mast, MD
Family Medicine Physician · Meshoppen, PA
Clarence Mast, MD is a family medicine physician with a practice address in Meshoppen, Pennsylvania, and NPI 1902898638, issued on Aug 18, 2005. Check the license (Pennsylvania MD 0126030E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Clarence Mast
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD 0126030E PA
Self-reported in NPPES; status is on the state search - Practice location
- Route 6, Meshoppen, PA 18630
- Phone
- (570) 833-8300
- Enumerated
- Aug 18, 2005
- Record last updated
- Mar 8, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (570) 833-8310
- Medicaid ID
- 677564 PA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Verify Clarence Mast in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD 0126030ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average family medicine physician in 2024
2,336 Medicare Part D claims for 132 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 76 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate218 claims
- Doxycycline Hyclate182 claims
- Azithromycin181 claims
- Tinidazole179 claims
- Valacyclovir167 claims
- Nystatin129 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: $95.61
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
Clarence Mast among 7,483 family medicine physician records in Pennsylvania
Clarence Mast, MD is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Pennsylvania
There are 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Leon Francis, MDMifflinville, PA 186311871571257
- Phillip Kurello, M.D.Lehman, PA 186271962495424
- John Bobeck, MDNanticoke, PA 186341649283417
- Kayla DaubNanticoke, PA 186341316457062
- Angela GeronaNanticoke, PA 186341700465093
- Richard Hiscox, DONanticoke, PA 186341538172978
- Eric Longenbach, MDLaporte, PA 186261922068162
- Samuel Schrack, D.O.Laporte, PA 186261114926920
Common questions
What is Clarence Mast, MD's NPI number?
Clarence Mast, MD's National Provider Identifier (NPI) is 1902898638, issued on Aug 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Clarence Mast, MD located?
The NPPES record lists a practice address at Route 6, Meshoppen, PA, 18630. Phone: (570) 833-8300. Providers update this record themselves, so call before visiting.
How can I verify Clarence Mast, MD's license?
NPPES lists Pennsylvania license number MD 0126030E, 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 Clarence Mast, MD prescribe under Medicare Part D?
In 2024, Clarence Mast, MD had 2,336 Medicare Part D claims for 132 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.