Mariam Gallagher, DO
NPI 1366825234 · Family Medicine Physician · Waterloo, IA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariam Gallagher, DO is a Family Medicine Physician provider in Waterloo, IA (NPI 1366825234).
Provider details
- NPI number
- 1366825234
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- Yes
- License
- S6840 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
397 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 191 | $61 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 69 | $90 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 45 | $120 |
| 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 | 45 | $15 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 31 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only |
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 | 116 | 33 |
| Levothyroxine Sodium | 84 | 22 |
| Amlodipine Besylate | 83 | 22 |
| Lisinopril | 54 | 20 |
| Omeprazole | 46 | 14 |
| Metoprolol Succinate | 44 | 16 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-07-09
- Last updated
- 2025-06-19
- Certified
- 2025-06-19
Frequently asked questions
- What is Mariam Gallagher's NPI number?
- Mariam Gallagher's National Provider Identifier (NPI) is 1366825234, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariam Gallagher's specialty?
- Mariam Gallagher is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mariam Gallagher located?
- Mariam Gallagher's practice location on file with NPPES is 2055 Kimball Ave, Waterloo, IA 50702-5014.
- What is Mariam Gallagher's phone number?
- The practice phone number listed in the NPPES registry for Mariam Gallagher is (818) 624-4536.
- Does Mariam Gallagher accept Medicare?
- Mariam Gallagher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariam Gallagher's NPI active?
- Yes — Mariam Gallagher's NPI (1366825234) is active in the NPPES registry as of the last update on 2025-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.