Drs. Sherman and O'Brien P.A.
NPI 1265612535 · Allergy & Immunology Physician · Baltimore, MD
Drs. Sherman and O'Brien P.A. is a Allergy & Immunology Physician organization in Baltimore, MD (NPI 1265612535).
Provider details
- NPI number
- 1265612535
- Entity type
- Organization
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sean O'Brien, President/Physician(410) 358-3000
- License
- D21916 (MD)
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
18 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
- 2007-11-05
- Last updated
- 2007-11-05
Frequently asked questions
- What is Drs. Sherman and O'Brien P.A.'s NPI number?
- Drs. Sherman and O'Brien P.A.'s National Provider Identifier (NPI) is 1265612535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Drs. Sherman and O'Brien P.A.?
- Drs. Sherman and O'Brien P.A. is classified in the NPPES registry as Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Drs. Sherman and O'Brien P.A. located?
- Drs. Sherman and O'Brien P.A.'s practice location on file with NPPES is 6810 Park Heights Ave, Baltimore, MD 21215-1641.
- What is Drs. Sherman and O'Brien P.A.'s phone number?
- The practice phone number listed in the NPPES registry for Drs. Sherman and O'Brien P.A. is (410) 358-3000.
- Who is the authorized official for Drs. Sherman and O'Brien P.A.?
- The authorized official listed on Drs. Sherman and O'Brien P.A.'s NPPES record is Sean O'Brien, President/Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Drs. Sherman and O'Brien P.A.'s NPI active?
- Yes — Drs. Sherman and O'Brien P.A.'s NPI (1265612535) is active in the NPPES registry as of the last update on 2007-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.