Karen Zeman, MD
NPI 1518195965 · Hematology & Oncology Physician · Bethesda, MD
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Zeman, MD is a Hematology & Oncology Physician provider in Bethesda, MD (NPI 1518195965).
Provider details
- NPI number
- 1518195965
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 0101248000 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$703 across 26 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-24
- Last updated
- 2024-02-15
- Certified
- 2024-02-15
Frequently asked questions
- What is Karen Zeman's NPI number?
- Karen Zeman's National Provider Identifier (NPI) is 1518195965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Zeman's specialty?
- Karen Zeman is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Zeman located?
- Karen Zeman's practice location on file with NPPES is National Naval Medical Ctr, Bethesda, MD 20889-5600.
- What is Karen Zeman's phone number?
- The practice phone number listed in the NPPES registry for Karen Zeman is (301) 319-4790.
- Does Karen Zeman accept Medicare?
- Karen Zeman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Zeman's NPI active?
- Yes — Karen Zeman's NPI (1518195965) is active in the NPPES registry as of the last update on 2024-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.