Garrett Diltz, MD
NPI 1578120176 · Medical Oncology Physician · Bethesda, MD
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Garrett Diltz, MD is a Medical Oncology Physician provider in Bethesda, MD (NPI 1578120176).
Provider details
- NPI number
- 1578120176
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 280702 (MA)
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 tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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.
$193 across 2 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
Additional practice locations (1)
- 330 Brookline AveBoston, MA 02215-5400Phone: (617) 667-7000
Registry dates
- Enumerated
- 2019-05-20
- Last updated
- 2025-04-23
- Certified
- 2025-04-23
Frequently asked questions
- What is Garrett Diltz's NPI number?
- Garrett Diltz's National Provider Identifier (NPI) is 1578120176, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garrett Diltz's specialty?
- Garrett Diltz is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Garrett Diltz located?
- Garrett Diltz's practice location on file with NPPES is 6410 Rockledge Dr Ste 660, Bethesda, MD 20817-1915.
- What is Garrett Diltz's phone number?
- The practice phone number listed in the NPPES registry for Garrett Diltz is (301) 571-0019.
- Does Garrett Diltz accept Medicare?
- Garrett Diltz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Garrett Diltz's NPI active?
- Yes — Garrett Diltz's NPI (1578120176) is active in the NPPES registry as of the last update on 2025-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.