Lawrence D. Appel, MD
Internal Medicine Physician · Harrisburg, PA
Lawrence D. Appel, MD is an internal medicine physician with a practice address in Harrisburg, Pennsylvania, and NPI 1952375453, issued on Feb 14, 2006. Check the license (Pennsylvania MD445949, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Lawrence D. Appel
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD445949 PA
058568 GA
150943 MA
Self-reported in NPPES; status is on the state search - Practice location
- 4300 Londonderry RD, Harrisburg, PA 17109
- Phone
- (717) 231-8772
- Enumerated
- Feb 14, 2006
- Record last updated
- Jan 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (717) 231-8435
- Medicaid IDs
- 589895032B GA
G58568 SC
102726301 PA
3165825 MA - Medicare enrollment
- Enrolled (PECOS I20120809000071); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 4300 Londonderry RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lawrence D. Appel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD445949Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
15 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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): 86.2 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 2 group practices
- Pinnacle Health Hospitalist Services LLCHarrisburg, PA
- Pinnacle Health Medical ServicesMechanicsburg, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lawrence D. Appel among 7,300 internal medicine physician records in Pennsylvania
Lawrence D. Appel, MD is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 64% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1992 · median 2008 among the 4,208 with a school on file
- Record last updated2021 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
184 internal medicine physician records list a practice address in Harrisburg
They are 184 of the 3,963 NPPES records with a practice address in Harrisburg, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Harrisburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Backenstoes, D.O.Harrisburg, PA 171091215985270
- Sevdalina Boshnakov, MDHarrisburg, PA 171091710090212
- David Bronstein, DOHarrisburg, PA 171091194758094
- Mary Davies, MDHarrisburg, PA 171091831113620
- Brian Deramo, DOHarrisburg, PA 171091427088525
- John Freshman, MDHarrisburg, PA 171091659330074
- Charles Gerlach, M.D.Harrisburg, PA 171091053369447
- Steven Heckenluber, DOHarrisburg, PA 171091477513455
Common questions
What is Lawrence D. Appel, MD's NPI number?
Lawrence D. Appel, MD's National Provider Identifier (NPI) is 1952375453, issued on Feb 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence D. Appel, MD located?
The NPPES record lists a practice address at 4300 Londonderry RD, Harrisburg, PA, 17109. Phone: (717) 231-8772. Providers update this record themselves, so call before visiting.
How can I verify Lawrence D. Appel, MD's license?
NPPES lists Pennsylvania license number MD445949, 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. Appel, MD prescribe under Medicare Part D?
In 2024, Lawrence D. Appel, MD had 15 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Lawrence D. Appel, MD's MIPS final score?
The 2023 MIPS final score is 86.2 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.