Louis Katz, M.D.
NPI 1437207503 · Internal Medicine Physician · New York, NY
Louis Katz, M.D. is a Internal Medicine Physician provider in New York, NY (NPI 1437207503).
Provider details
- NPI number
- 1437207503
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 138140 (NY)
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 tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 34 | — |
| Semaglutidebrand: Ozempic | 31 | — |
| Atorvastatin Calcium | 27 | — |
| Methylprednisolone | 26 | 17 |
| Rosuvastatin Calcium | 19 | — |
| Azithromycin | 18 | 11 |
| Zolpidem Tartrate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$286 across 13 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
- 2007-01-08
- Last updated
- 2008-02-14
Frequently asked questions
- What is Louis Katz's NPI number?
- Louis Katz's National Provider Identifier (NPI) is 1437207503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Katz's specialty?
- Louis Katz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Katz located?
- Louis Katz's practice location on file with NPPES is 20 Fifth Avenue, New York, NY 10011-8831.
- What is Louis Katz's phone number?
- The practice phone number listed in the NPPES registry for Louis Katz is (212) 420-0011.
- Is Louis Katz's NPI active?
- Yes — Louis Katz's NPI (1437207503) is active in the NPPES registry as of the last update on 2008-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.