Mariaileen Sourwine, M.D.
NPI 1528227378 · Internal Medicine Physician · Arnold, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariaileen Sourwine, M.D. is a Internal Medicine Physician provider in Arnold, MD (NPI 1528227378).
Provider details
- NPI number
- 1528227378
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- D72591 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,586 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 | 405 | $115 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 353 | $17 |
| Acupuncture, Each Additional 15 Minutes97811 | 296 | $29 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 240 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 223 | $80 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 254 | 74 |
| Levothyroxine Sodium | 190 | 53 |
| Losartan Potassium | 169 | 50 |
| Rosuvastatin Calcium | 138 | 41 |
| Metoprolol Succinate | 107 | 29 |
| Hydrochlorothiazide | 89 | 25 |
| Sertraline Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-06
- Last updated
- 2021-12-07
- Certified
- 2021-12-07
Frequently asked questions
- What is Mariaileen Sourwine's NPI number?
- Mariaileen Sourwine's National Provider Identifier (NPI) is 1528227378, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariaileen Sourwine's specialty?
- Mariaileen Sourwine is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mariaileen Sourwine located?
- Mariaileen Sourwine's practice location on file with NPPES is 277 Peninsula Farm Rd Ste I, Arnold, MD 21012-1018.
- What is Mariaileen Sourwine's phone number?
- The practice phone number listed in the NPPES registry for Mariaileen Sourwine is (410) 989-8833.
- Does Mariaileen Sourwine accept Medicare?
- Mariaileen Sourwine is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariaileen Sourwine's NPI active?
- Yes — Mariaileen Sourwine's NPI (1528227378) is active in the NPPES registry as of the last update on 2021-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.