Mark Kaplan, DO
NPI 1861498461 · Emergency Medicine Physician · Ellsworth, ME
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Kaplan, DO is a Emergency Medicine Physician provider in Ellsworth, ME (NPI 1861498461).
Provider details
- NPI number
- 1861498461
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 907 (ME)
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
2 documented practice locations
- 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 61 | 21 |
| Lisinopril | 56 | 20 |
| Metformin Hcl | 51 | 16 |
| Amlodipine Besylate | 50 | 18 |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 49 | — |
| Hydrochlorothiazide | 39 | — |
| Buprenorphine Hcl/Naloxone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 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
Additional practice locations (1)
- 57 Water StBlue Hill, ME 04614Phone: (207) 374-3911Fax: (207) 374-3986
Registry dates
- Enumerated
- 2005-06-28
- Last updated
- 2025-09-11
- Certified
- 2024-09-26
Frequently asked questions
- What is Mark Kaplan's NPI number?
- Mark Kaplan's National Provider Identifier (NPI) is 1861498461, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Kaplan's specialty?
- Mark Kaplan is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Kaplan located?
- Mark Kaplan's practice location on file with NPPES is 58 Laurel St, Ellsworth, ME 04605-2305.
- What is Mark Kaplan's phone number?
- The practice phone number listed in the NPPES registry for Mark Kaplan is (207) 659-5546.
- Does Mark Kaplan accept Medicare?
- Mark Kaplan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Kaplan's NPI active?
- Yes — Mark Kaplan's NPI (1861498461) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.