LAWRENCE JOHN APPEL M.D.
NPI 1366407066
Internal Medicine in Baltimore, MD
About Lawrence John Appel M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAWRENCE JOHN APPEL M.D. (NPI 1366407066) is an individual internal medicine provider in Baltimore, Maryland, licensed in Maryland (D29279) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Lawrence John Appel M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Lawrence Appel reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 338 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21287 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lawrence Appel's NPI number?
The NPI number for Lawrence Appel is 1366407066. It was assigned to this individual provider in the NPPES registry on April 18, 2006.
Where is Lawrence Appel located?
Lawrence Appel practices at 600 N Wolfe St, Baltimore, MD 21287. The listed phone number is (410) 955-9434.
What is Lawrence Appel's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Lawrence Appel enrolled in Medicare?
Yes. Lawrence Appel is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Lawrence Appel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lawrence Appel reassigns Medicare benefits to 2 organizations: Johns Hopkins University (Baltimore, MD) and Johns Hopkins University (Baltimore, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lawrence Appel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Lawrence Appel was last updated on February 1, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Lawrence John Appel, M.D. · NPI 1366407066
Internal Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 18, 2006.
## Identity
- **NPI:** 1366407066 (Entity type: Individual)
- **Enumerated:** April 18, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D29279 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 N WOLFE ST, Baltimore, MD 21287-0005
- **Phone:** (410) 955-9434
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1023018413, Baltimore, MD); Johns Hopkins University (NPI 1902332133, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 1, 2013
- **Other identifiers:** Medicare PIN KR65MG44 (MD); Medicaid 313881000 (MD); Medicare UPIN D76111 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1366407066) · Data from the CMS NPPES public registry.