Lawrence D. Mass, MD
Internal Medicine Physician · Lower Gwynedd, PA
Lawrence D. Mass, MD is an internal medicine physician with a practice address in Lower Gwynedd, Pennsylvania, and NPI 1316943830, issued on Jun 21, 2005. Check the license (Pennsylvania MD066124L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Lawrence D. Mass
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD066124L PA
Self-reported in NPPES; status is on the state search - Practice location
- 605 N Bethlehem Pike, Lower Gwynedd, PA 19002
- Phone
- (215) 643-2119
- Enumerated
- Jun 21, 2005
- Record last updated
- Jul 21, 2022
- Fax
- (215) 643-3568
- Medicare enrollment
- Enrolled (PECOS I20040130000668); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 605 N Bethlehem Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennie Campbell, DOInternal Medicine Physician1275539710
- Steven Channick, MDInternal Medicine Physician1467458901
- Maryam FarooqHospitalist Physician1023490448
- Catherine McCormick, DOFamily Medicine Physician1437736097
- Amy Rosenberg, CRNPFamily Nurse Practitioner1730354127
- Irwin Wolfert, MDFamily Medicine Physician1447256763
Verify Lawrence D. Mass in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD066124LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,615 Medicare Part D claims for 765 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 77 claims were for opioids.
Most prescribed
- Atorvastatin Calcium612 claims
- Rosuvastatin Calcium542 claims
- Amlodipine Besylate350 claims
- Lisinopril348 claims
- Levothyroxine Sodium270 claims
- Losartan Potassium247 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: $60.77
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Einstein Community Health Associates IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
8 internal medicine physician records list a practice address in Lower Gwynedd
They are 8 of the 103 NPPES records with a practice address in Lower Gwynedd, and 7,300 internal medicine physician records in Pennsylvania.
All 8 in Lower Gwynedd → All 7,300 in Pennsylvania → Every provider in Lower Gwynedd →
Other internal medicine physician records in Pennsylvania
- Saira Aamir, MDYork, PA1184515686
- John Aaron, MDWest Grove, PA1427094531
- Todd Aaron, MDPhiladelphia, PA1457350522
- Joseph Abalos, M.D.Seneca, PA1215128434
- Mubasher Abbas, MDYork, PA1578978425
- Nicholas AbbottFarrell, PA1639525678
- Sara Abbruzzi, D.O.Philadelphia, PA1689686313
- Ahmad Abdalla, MDPhiladelphia, PA1730981127
- Tori Abdalla, DOPhiladelphia, PA1942091699
- Hany Abdel, D.O.Plymouth Meeting, PA1164467262
Common questions
What is Lawrence D. Mass, MD's NPI number?
Lawrence D. Mass, MD's National Provider Identifier (NPI) is 1316943830, issued on Jun 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence D. Mass, MD located?
The NPPES record lists a practice address at 605 N Bethlehem Pike, Lower Gwynedd, PA, 19002. Phone: (215) 643-2119. Providers update this record themselves, so call before visiting.
How can I verify Lawrence D. Mass, MD's license?
NPPES lists Pennsylvania license number MD066124L, 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 Lawrence D. Mass, MD prescribe under Medicare Part D?
In 2024, Lawrence D. Mass, MD had 8,615 Medicare Part D claims for 765 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.