Mary Delaney, MD
NPI 1639133051 · Obstetrics & Gynecology Physician · Bethesda, MD
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Delaney, MD is a Obstetrics & Gynecology Physician provider in Bethesda, MD (NPI 1639133051).
Provider details
- NPI number
- 1639133051
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- License
- D46423 (MD)
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
20 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
- 2006-04-13
- Last updated
- 2025-10-02
- Certified
- 2025-10-02
Frequently asked questions
- What is Mary Delaney's NPI number?
- Mary Delaney's National Provider Identifier (NPI) is 1639133051, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Delaney's specialty?
- Mary Delaney is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Delaney located?
- Mary Delaney's practice location on file with NPPES is 6516 Goldleaf Dr, Bethesda, MD 20817-5837.
- What is Mary Delaney's phone number?
- The practice phone number listed in the NPPES registry for Mary Delaney is (301) 787-9403.
- Does Mary Delaney accept Medicare?
- Mary Delaney is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Delaney's NPI active?
- Yes — Mary Delaney's NPI (1639133051) is active in the NPPES registry as of the last update on 2025-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.