Douglas Clarke, D.O.
NPI 1265407597 · Endocrinology, Diabetes & Metabolism Physician · Hagerstown, MD
Douglas Clarke, D.O. is a Endocrinology, Diabetes & Metabolism Physician provider in Hagerstown, MD (NPI 1265407597).
Provider details
- NPI number
- 1265407597
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- H83672 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-21
- Last updated
- 2022-07-21
Frequently asked questions
- What is Douglas Clarke's NPI number?
- Douglas Clarke's National Provider Identifier (NPI) is 1265407597, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Clarke's specialty?
- Douglas Clarke is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Clarke located?
- Douglas Clarke's practice location on file with NPPES is 11110 Medical Campus Rd Ste 108, Hagerstown, MD 21742-6734.
- What is Douglas Clarke's phone number?
- The practice phone number listed in the NPPES registry for Douglas Clarke is (301) 714-4041.
- Is Douglas Clarke's NPI active?
- Yes — Douglas Clarke's NPI (1265407597) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.