Mary Di Masi, CNM
NPI 1730610304 · Advanced Practice Midwife · Arlington, VA
Enrolled with Medicare as Practitioner - Certified Nurse Midwife (cnm) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Di Masi, CNM is a Advanced Practice Midwife provider in Arlington, VA (NPI 1730610304).
Provider details
- NPI number
- 1730610304
- Entity type
- Individual
- Primary specialty
- Advanced Practice MidwifePhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNM
- Sex
- Female
- Sole proprietor
- No
- License
- AC002025 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 3833 Fairfax Dr Ste 360Arlington, VA 22203Phone: (571) 970-6050Fax: (571) 970-6352
- 2500 Clarendon Blvd Apt 523Arlington, VA 22201-3829Phone: (631) 320-6866
Registry dates
- Enumerated
- 2017-03-24
- Last updated
- 2018-11-06
Frequently asked questions
- What is Mary Di Masi's NPI number?
- Mary Di Masi's National Provider Identifier (NPI) is 1730610304, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Di Masi's specialty?
- Mary Di Masi is listed in the NPPES registry with a primary specialty of Advanced Practice Midwife (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Di Masi located?
- Mary Di Masi's practice location on file with NPPES is 3833 Fairfax Dr Ste 360, Arlington, VA 22203.
- What is Mary Di Masi's phone number?
- The practice phone number listed in the NPPES registry for Mary Di Masi is (571) 970-6050.
- Does Mary Di Masi accept Medicare?
- Mary Di Masi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Di Masi's NPI active?
- Yes — Mary Di Masi's NPI (1730610304) is active in the NPPES registry as of the last update on 2018-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.