William Ballay, MD
NPI 1649275199 · Obstetrics & Gynecology Physician · Philadelphia, PA
William Ballay, MD is a Obstetrics & Gynecology Physician provider in Philadelphia, PA (NPI 1649275199).
Provider details
- NPI number
- 1649275199
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD014655E (PA)
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
21 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
- 2005-06-20
- Last updated
- 2007-10-12
Frequently asked questions
- What is William Ballay's NPI number?
- William Ballay's National Provider Identifier (NPI) is 1649275199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Ballay's specialty?
- William Ballay is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is William Ballay located?
- William Ballay's practice location on file with NPPES is 7996 Oxford Ave, Philadelphia, PA 19111-2241.
- What is William Ballay's phone number?
- The practice phone number listed in the NPPES registry for William Ballay is (215) 728-1411.
- Is William Ballay's NPI active?
- Yes — William Ballay's NPI (1649275199) is active in the NPPES registry as of the last update on 2007-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.