DAVID AARON WEINER M.D.
NPI 1023436854
Orthopaedic Surgery in Baltimore, MD
About David Aaron Weiner M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID AARON WEINER M.D. (NPI 1023436854) is an individual orthopaedic surgery provider in Baltimore, Maryland, licensed in New York (303108-01) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS, is affiliated with Medstar Southern Maryland Hospital Center, and is a graduate of Georgetown University School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
David Aaron Weiner M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show David Weiner reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 3,530 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- Also billed through NPI 1891797148 (Virginia)
- 861 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 54 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 14
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Medstar Southern Maryland Hospital Center
Acute Care Hospitals · Clinton, MDSentara Northern Virginia Medical Center
Acute Care Hospitals · Woodbridge, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21218 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 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
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 David Weiner's NPI number?
The NPI number for David Weiner is 1023436854. It was assigned to this individual provider in the NPPES registry on March 29, 2014.
Where is David Weiner located?
David Weiner practices at 201 E University Pkwy Department Of Orthopaedic Surgery, Baltimore, MD 21218. The listed phone number is (410) 554-2270.
What is David Weiner's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is David Weiner enrolled in Medicare?
Yes. David Weiner is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for David Weiner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Weiner reassigns Medicare benefits to 3 organizations: Medstar Medical Group II LLC (Baltimore, MD), Mgmc LLC (Washington, DC) and Icahn School Of Medicine At Mount Sinai (New York, NY). 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 David Weiner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is David Weiner affiliated with any hospitals?
According to CMS data, David Weiner is affiliated with Medstar Southern Maryland Hospital Center and Sentara Northern Virginia Medical Center.
When was this NPI record last updated?
The NPPES record for David Weiner was last updated on April 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# David Aaron Weiner, M.D. · NPI 1023436854
Orthopaedic Surgery physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since March 29, 2014.
## Identity
- **NPI:** 1023436854 (Entity type: Individual)
- **Enumerated:** March 29, 2014
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** 303108-01 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 201 E UNIVERSITY PKWY, DEPARTMENT OF ORTHOPAEDIC SURGERY, Baltimore, MD 21218-2829
- **Phone:** (410) 554-2270
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD); Mgmc LLC (NPI 1316949654, Washington, DC); Icahn School Of Medicine At Mount Sinai (NPI 1114358348, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** April 3, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1023436854) · Data from the CMS NPPES public registry.