Marcus Christiansen, DO
NPI 1831501717 · Family Medicine Physician · Brewer, ME
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcus Christiansen, DO is a Family Medicine Physician provider in Brewer, ME (NPI 1831501717).
Provider details
- NPI number
- 1831501717
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
310 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 224 | $89 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 75 | $77 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 11 | $102 |
Typical Medicare-allowed amounts for these services range $77–$102 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 90 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 510 | 181 |
| Lisinopril | 354 | 121 |
| Levothyroxine Sodium | 287 | 94 |
| Amlodipine Besylate | 254 | 87 |
| Rosuvastatin Calcium | 227 | 68 |
| Tamsulosin Hcl | 187 | 62 |
| Metoprolol Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-05-27
- Last updated
- 2017-10-18
Frequently asked questions
- What is Marcus Christiansen's NPI number?
- Marcus Christiansen's National Provider Identifier (NPI) is 1831501717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcus Christiansen's specialty?
- Marcus Christiansen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marcus Christiansen located?
- Marcus Christiansen's practice location on file with NPPES is 234 State St, Brewer, ME 04412-1519.
- What is Marcus Christiansen's phone number?
- The practice phone number listed in the NPPES registry for Marcus Christiansen is (207) 989-0550.
- Does Marcus Christiansen accept Medicare?
- Marcus Christiansen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcus Christiansen's NPI active?
- Yes — Marcus Christiansen's NPI (1831501717) is active in the NPPES registry as of the last update on 2017-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.