Gideon Blumenthal, M.D.
NPI 1427242635 · Hematology & Oncology Physician · Bethesda, MD
Gideon Blumenthal, M.D. is a Hematology & Oncology Physician provider in Bethesda, MD (NPI 1427242635).
Provider details
- NPI number
- 1427242635
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 937448 (MD)
Specialties & taxonomies
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
1 documented practice location
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
Registry dates
- Enumerated
- 2007-08-30
- Last updated
- 2008-06-27
Frequently asked questions
- What is Gideon Blumenthal's NPI number?
- Gideon Blumenthal's National Provider Identifier (NPI) is 1427242635, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gideon Blumenthal's specialty?
- Gideon Blumenthal is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gideon Blumenthal located?
- Gideon Blumenthal's practice location on file with NPPES is 8901 Wisconsin Ave, Bethesda, MD 20889-5600.
- What is Gideon Blumenthal's phone number?
- The practice phone number listed in the NPPES registry for Gideon Blumenthal is (301) 435-5868.
- Is Gideon Blumenthal's NPI active?
- Yes — Gideon Blumenthal's NPI (1427242635) is active in the NPPES registry as of the last update on 2008-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.