OrganizationActive
Cornerstone Montgomery, Inc.
NPI 1659073963 · Case Management Agency · Prince Frederick, MD
Cornerstone Montgomery, Inc. is a Case Management Agency organization in Prince Frederick, MD (NPI 1659073963).
Provider details
- NPI number
- 1659073963
- Entity type
- Organization
- Primary specialty
- Case Management AgencyAgencies
- Organization subpart
- No
- Authorized official
- Michael Ostrowski, Billing Manager(301) 493-4200
Specialties & taxonomies
Agencies
Profile Score
Established profile(59/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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
305 Prince Frederick Blvd
Prince Frederick, MD 20678-3139
Phone: (410) 535-4787
Fax: (410) 535-4965
Street-level locationGet directions
Mailing address
6040 Southport Dr
Bethesda, MD 20814-1848
Registry dates
- Enumerated
- 2023-03-20
- Last updated
- 2023-03-20
- Certified
- 2023-03-20
Frequently asked questions
- What is Cornerstone Montgomery, Inc.'s NPI number?
- Cornerstone Montgomery, Inc.'s National Provider Identifier (NPI) is 1659073963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Cornerstone Montgomery, Inc.?
- Cornerstone Montgomery, Inc. is classified in the NPPES registry as Case Management Agency (Agencies).
- Where is Cornerstone Montgomery, Inc. located?
- Cornerstone Montgomery, Inc.'s practice location on file with NPPES is 305 Prince Frederick Blvd, Prince Frederick, MD 20678-3139.
- What is Cornerstone Montgomery, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Cornerstone Montgomery, Inc. is (410) 535-4787.
- Who is the authorized official for Cornerstone Montgomery, Inc.?
- The authorized official listed on Cornerstone Montgomery, Inc.'s NPPES record is Michael Ostrowski, Billing Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Cornerstone Montgomery, Inc.'s NPI active?
- Yes — Cornerstone Montgomery, Inc.'s NPI (1659073963) is active in the NPPES registry as of the last update on 2023-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.