Madelaine Feldman, MD
NPI 1588665400 · Rheumatology Physician · Metairie, LA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Madelaine Feldman, MD is a Rheumatology Physician provider in Metairie, LA (NPI 1588665400).
Provider details
- NPI number
- 1588665400
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 016753 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
213 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 84 | $114 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 81 | $13 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 36 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 12 | $68 |
Typical Medicare-allowed amounts for these services range $13–$114 (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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 143 | 51 |
| Hydroxychloroquine Sulfate | 119 | 54 |
| Prednisone | 82 | 32 |
| Tramadol Hcl | 63 | 19 |
| Pilocarpine Hcl | 59 | 20 |
| Levothyroxine Sodium | 39 | 14 |
| Methylprednisolone | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,102 across 42 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-02
- Last updated
- 2023-02-28
- Certified
- 2023-02-28
Frequently asked questions
- What is Madelaine Feldman's NPI number?
- Madelaine Feldman's National Provider Identifier (NPI) is 1588665400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Madelaine Feldman's specialty?
- Madelaine Feldman is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Madelaine Feldman located?
- Madelaine Feldman's practice location on file with NPPES is 111 Veterans Memorial Blvd, Metairie, LA 70005-3028.
- What is Madelaine Feldman's phone number?
- The practice phone number listed in the NPPES registry for Madelaine Feldman is (504) 899-1120.
- Does Madelaine Feldman accept Medicare?
- Madelaine Feldman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Madelaine Feldman's NPI active?
- Yes — Madelaine Feldman's NPI (1588665400) is active in the NPPES registry as of the last update on 2023-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.