Ellen Im, M.D.
NPI 1881854834 · Nephrology Physician · Bethesda, MD
Enrolled with Medicare as Order and Referring Only - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Im, M.D. is a Nephrology Physician provider in Bethesda, MD (NPI 1881854834).
Provider details
- NPI number
- 1881854834
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 0101246440 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 9300 Dewitt LoopFort Belvoir, VA 22060-5285Phone: (571) 231-3224
Registry dates
- Enumerated
- 2008-06-12
- Last updated
- 2025-12-12
- Certified
- 2025-12-12
Frequently asked questions
- What is Ellen Im's NPI number?
- Ellen Im's National Provider Identifier (NPI) is 1881854834, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Im's specialty?
- Ellen Im is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Im located?
- Ellen Im's practice location on file with NPPES is 4494 N Palmer Rd, Bethesda, MD 20889-5529.
- What is Ellen Im's phone number?
- The practice phone number listed in the NPPES registry for Ellen Im is (301) 295-4330.
- Does Ellen Im accept Medicare?
- Ellen Im is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Im's NPI active?
- Yes — Ellen Im's NPI (1881854834) is active in the NPPES registry as of the last update on 2025-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.