LEONARD FELDMAN MD
NPI 1851333066
Internal Medicine in Baltimore, MD
About Leonard Feldman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEONARD FELDMAN MD (NPI 1851333066) is an individual internal medicine provider in Baltimore, Maryland, licensed in Maryland (D61391) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of University Of Maryland School Of Medicine (1999).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Leonard Feldman Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Leonard Feldman reassigns Medicare billing to 4 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
- 952 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 338 clinicians in this Medicare group
Baltimore, MD 21224
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Baltimore Medical System, Inc.
- 243 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDPhysician 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Leonard Feldman's NPI number?
The NPI number for Leonard Feldman is 1851333066. It was assigned to this individual provider in the NPPES registry on June 12, 2006.
Where is Leonard Feldman located?
Leonard Feldman practices at 600 N Wolfe St, Baltimore, MD 21287. The listed phone number is (443) 287-3631.
What is Leonard Feldman's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Leonard Feldman enrolled in Medicare?
Yes. Leonard Feldman is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Leonard Feldman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leonard Feldman reassigns Medicare benefits to 4 organizations: Johns Hopkins University (Baltimore, MD), Johns Hopkins Community Physicians (Baltimore, MD), Johns Hopkins University (Baltimore, MD) and Baltimore Medical Systems, Inc. (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 Leonard Feldman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Leonard Feldman affiliated with any hospitals?
According to CMS data, Leonard Feldman is affiliated with Johns Hopkins Hospital, The.
When was this NPI record last updated?
The NPPES record for Leonard Feldman was last updated on September 24, 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.
# Leonard Feldman, MD · NPI 1851333066
Internal Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 12, 2006.
## Identity
- **NPI:** 1851333066 (Entity type: Individual)
- **Enumerated:** June 12, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D61391 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 N WOLFE ST, Baltimore, MD 21287-0005
- **Phone:** (443) 287-3631
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1023018413, Baltimore, MD); Johns Hopkins Community Physicians (NPI 1124629837, Baltimore, MD); Johns Hopkins University (NPI 1902332133, Baltimore, MD); Baltimore Medical Systems, Inc. (NPI 1164138152, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 1999
## Record status
- **NPPES last updated:** September 24, 2013
- **Other identifiers:** Other 60609101 (MD); Medicare UPIN H82300 (MD); Medicare ID-Type Unspecified KR65I820 (MD); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1851333066) · Data from the CMS NPPES public registry.