Marjorie Dimaggio, MD
NPI 1164476388 · Geriatric Medicine (Internal Medicine) Physician · Madison, WI
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marjorie Dimaggio, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Madison, WI (NPI 1164476388).
Provider details
- NPI number
- 1164476388
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 33717-020 (WI)
Specialties & taxonomies
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
20 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
57 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) |
|---|---|---|
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 57 | $170 |
Typical Medicare-allowed amounts for these services range $170–$170 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Metoprolol Tartrate | 31 |
| Apixabanbrand: Eliquis | 24 |
| Levothyroxine Sodium | 20 |
| Lisinopril | 19 |
| Atorvastatin Calcium | 16 |
| Omeprazole | 15 |
| Gabapentin | 14 |
| Potassium Chloride | 14 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-20
- Last updated
- 2022-05-18
- Certified
- 2022-05-18
Frequently asked questions
- What is Marjorie Dimaggio's NPI number?
- Marjorie Dimaggio's National Provider Identifier (NPI) is 1164476388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marjorie Dimaggio's specialty?
- Marjorie Dimaggio is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Marjorie Dimaggio located?
- Marjorie Dimaggio's practice location on file with NPPES is 1821 S Stoughton Rd, Madison, WI 53716-2257.
- What is Marjorie Dimaggio's phone number?
- The practice phone number listed in the NPPES registry for Marjorie Dimaggio is (608) 260-6000.
- Does Marjorie Dimaggio accept Medicare?
- Marjorie Dimaggio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marjorie Dimaggio's NPI active?
- Yes — Marjorie Dimaggio's NPI (1164476388) is active in the NPPES registry as of the last update on 2022-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.