Mary Collins, D.O.
NPI 1821446196 · Obstetrics & Gynecology Physician · Bethesda, MD
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Collins, D.O. is a Obstetrics & Gynecology Physician provider in Bethesda, MD (NPI 1821446196).
Provider details
- NPI number
- 1821446196
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 0102205111 (VA)
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
10 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
- 2016-05-27
- Last updated
- 2025-07-28
- Certified
- 2025-07-28
Frequently asked questions
- What is Mary Collins's NPI number?
- Mary Collins's National Provider Identifier (NPI) is 1821446196, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Collins's specialty?
- Mary Collins is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Collins located?
- Mary Collins's practice location on file with NPPES is Walter Reed National Military Medical Center, Bethesda, MD 20889.
- What is Mary Collins's phone number?
- The practice phone number listed in the NPPES registry for Mary Collins is (301) 295-2045.
- Does Mary Collins accept Medicare?
- Mary Collins is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Collins's NPI active?
- Yes — Mary Collins's NPI (1821446196) is active in the NPPES registry as of the last update on 2025-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.