Maggie Johnson, M.D.
NPI 1598119802 · Family Medicine Physician · Rowley, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maggie Johnson, M.D. is a Family Medicine Physician provider in Rowley, MA (NPI 1598119802).
Provider details
- NPI number
- 1598119802
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 278377 (MA)
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
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
495 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 | 180 | $129 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 100 | $131 |
| Administration of Influenza Virus VaccineG0008 | 71 | $33 |
| Admn Sarscov2 Vacc 1 Dose90480 | 61 | $44 |
| Administration of Pneumococcal VaccineG0009 | 24 | $33 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 | $92 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 70 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 293 | 104 |
| Lisinopril | 158 | 54 |
| Amlodipine Besylate | 133 | 48 |
| Omeprazole | 125 | 45 |
| Rosuvastatin Calcium | 110 | 44 |
| Metoprolol Succinate | 109 | 41 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-04-22
- Last updated
- 2024-10-29
- Certified
- 2024-10-29
Frequently asked questions
- What is Maggie Johnson's NPI number?
- Maggie Johnson's National Provider Identifier (NPI) is 1598119802, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maggie Johnson's specialty?
- Maggie Johnson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maggie Johnson located?
- Maggie Johnson's practice location on file with NPPES is 414 Haverhill St, Rowley, MA 01969-1919.
- What is Maggie Johnson's phone number?
- The practice phone number listed in the NPPES registry for Maggie Johnson is (877) 379-5522.
- Does Maggie Johnson accept Medicare?
- Maggie Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maggie Johnson's NPI active?
- Yes — Maggie Johnson's NPI (1598119802) is active in the NPPES registry as of the last update on 2024-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.