OrganizationActive
St. Mary'S Multispecialty Surgery Center
NPI 1245249754 · Ambulatory Surgical Clinic/Center · Great Mills, MD
Provider details
- NPI number
- 1245249754
- Entity type
- Organization
- Primary specialty
- Ambulatory Surgical Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Douglas Hallgren, President(301) 862-3338
- License
- A1147 (MD)
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
22325 Greenview Pkwy
Great Mills, MD 20634-3491
Phone: (301) 862-3338
Fax: (301) 862-3335
Street-level locationGet directions
Mailing address
Po Box 1310
California, MD 20619-1310
Registry dates
- Enumerated
- 2006-08-05
- Last updated
- 2020-08-22
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.