Stephen Baer, MD
NPI 1578528568 · Obstetrics & Gynecology Physician · Boston, MA
Stephen Baer, MD is a Obstetrics & Gynecology Physician provider in Boston, MA (NPI 1578528568).
Provider details
- NPI number
- 1578528568
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36391 (MA)
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
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
- 2006-04-20
- Last updated
- 2011-06-20
Frequently asked questions
- What is Stephen Baer's NPI number?
- Stephen Baer's National Provider Identifier (NPI) is 1578528568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Baer's specialty?
- Stephen Baer is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Baer located?
- Stephen Baer's practice location on file with NPPES is 165 Dartmouth St, Boston, MA 02116-5123.
- What is Stephen Baer's phone number?
- The practice phone number listed in the NPPES registry for Stephen Baer is (617) 859-5250.
- Is Stephen Baer's NPI active?
- Yes — Stephen Baer's NPI (1578528568) is active in the NPPES registry as of the last update on 2011-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.