IAN M OPPENHEIM MD
NPI 1033554605
Internal Medicine - Pulmonary Disease in Washington, DC
About Ian M Oppenheim Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IAN M OPPENHEIM MD (NPI 1033554605) is an individual pulmonary disease provider in Washington, District Of Columbia, licensed in District Of Columbia (MD049102) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS and is a graduate of University Of Maryland School Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses 3
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
Ian M Oppenheim Md 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
2Medicare enrollment records show Ian Oppenheim reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Kykotsmovi, AZ 86039
- Reassigned Medicare billing, Texas enrollment
- 540 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20007 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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
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 Ian Oppenheim's NPI number?
The NPI number for Ian Oppenheim is 1033554605. It was assigned to this individual provider in the NPPES registry on May 8, 2013.
Where is Ian Oppenheim located?
Ian Oppenheim practices at 3800 Reservoir Rd NW, Washington, DC 20007. The listed phone number is (202) 444-8830.
What is Ian Oppenheim's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Ian Oppenheim enrolled in Medicare?
Yes. Ian Oppenheim 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 Ian Oppenheim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ian Oppenheim reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Tuba City Regional Health Care Corporation (Kykotsmovi, AZ). 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 Ian Oppenheim'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 Ian Oppenheim was last updated on April 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Ian M Oppenheim, MD · NPI 1033554605
Pulmonary Disease physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since May 8, 2013.
## Identity
- **NPI:** 1033554605 (Entity type: Individual)
- **Enumerated:** May 8, 2013
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** MD049102 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3800 RESERVOIR RD NW, Washington, DC 20007-2113
- **Phone:** (202) 444-8830
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1205562816, Washington, DC); Tuba City Regional Health Care Corporation (NPI 1396921870, Kykotsmovi, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** April 8, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1033554605) · Data from the CMS NPPES public registry.